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Wolfgang Hottgenroth
2017-05-26 18:45:18 +02:00
commit 27f62c4c27
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379
system/src/cmsis/startup_stm32f103xb.S Normal file
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/**
*************** (C) COPYRIGHT 2016 STMicroelectronics ************************
* @file startup_stm32f103xb.s
* @author MCD Application Team
* @version V4.1.0
* @date 29-April-2016
* @brief STM32F103xB Devices vector table for Atollic toolchain.
* This module performs:
* - Set the initial SP
* - Set the initial PC == Reset_Handler,
* - Set the vector table entries with the exceptions ISR address
* - Configure the clock system
* - Branches to main in the C library (which eventually
* calls main()).
* After Reset the Cortex-M3 processor is in Thread mode,
* priority is Privileged, and the Stack is set to Main.
******************************************************************************
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
.syntax unified
.cpu cortex-m3
.fpu softvfp
.thumb
.global g_pfnVectors
.global Default_Handler
/* start address for the initialization values of the .data section.
defined in linker script */
.word _sidata
/* start address for the .data section. defined in linker script */
.word _sdata
/* end address for the .data section. defined in linker script */
.word _edata
/* start address for the .bss section. defined in linker script */
.word _sbss
/* end address for the .bss section. defined in linker script */
.word _ebss
.equ BootRAM, 0xF108F85F
/**
* @brief This is the code that gets called when the processor first
* starts execution following a reset event. Only the absolutely
* necessary set is performed, after which the application
* supplied main() routine is called.
* @param None
* @retval : None
*/
.section .text.Reset_Handler
.weak Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
/* Copy the data segment initializers from flash to SRAM */
movs r1, #0
b LoopCopyDataInit
CopyDataInit:
ldr r3, =_sidata
ldr r3, [r3, r1]
str r3, [r0, r1]
adds r1, r1, #4
LoopCopyDataInit:
ldr r0, =_sdata
ldr r3, =_edata
adds r2, r0, r1
cmp r2, r3
bcc CopyDataInit
ldr r2, =_sbss
b LoopFillZerobss
/* Zero fill the bss segment. */
FillZerobss:
movs r3, #0
str r3, [r2], #4
LoopFillZerobss:
ldr r3, = _ebss
cmp r2, r3
bcc FillZerobss
/* Call the clock system intitialization function.*/
bl SystemInit
/* Call static constructors */
bl __libc_init_array
/* Call the application's entry point.*/
bl main
bx lr
.size Reset_Handler, .-Reset_Handler
/**
* @brief This is the code that gets called when the processor receives an
* unexpected interrupt. This simply enters an infinite loop, preserving
* the system state for examination by a debugger.
*
* @param None
* @retval : None
*/
.section .text.Default_Handler,"ax",%progbits
Default_Handler:
Infinite_Loop:
b Infinite_Loop
.size Default_Handler, .-Default_Handler
/******************************************************************************
*
* The minimal vector table for a Cortex M3. Note that the proper constructs
* must be placed on this to ensure that it ends up at physical address
* 0x0000.0000.
*
******************************************************************************/
.section .isr_vector,"a",%progbits
.type g_pfnVectors, %object
.size g_pfnVectors, .-g_pfnVectors
g_pfnVectors:
.word _estack
.word Reset_Handler
.word NMI_Handler
.word HardFault_Handler
.word MemManage_Handler
.word BusFault_Handler
.word UsageFault_Handler
.word 0
.word 0
.word 0
.word 0
.word SVC_Handler
.word DebugMon_Handler
.word 0
.word PendSV_Handler
.word SysTick_Handler
.word WWDG_IRQHandler
.word PVD_IRQHandler
.word TAMPER_IRQHandler
.word RTC_IRQHandler
.word FLASH_IRQHandler
.word RCC_IRQHandler
.word EXTI0_IRQHandler
.word EXTI1_IRQHandler
.word EXTI2_IRQHandler
.word EXTI3_IRQHandler
.word EXTI4_IRQHandler
.word DMA1_Channel1_IRQHandler
.word DMA1_Channel2_IRQHandler
.word DMA1_Channel3_IRQHandler
.word DMA1_Channel4_IRQHandler
.word DMA1_Channel5_IRQHandler
.word DMA1_Channel6_IRQHandler
.word DMA1_Channel7_IRQHandler
.word ADC1_2_IRQHandler
.word USB_HP_CAN1_TX_IRQHandler
.word USB_LP_CAN1_RX0_IRQHandler
.word CAN1_RX1_IRQHandler
.word CAN1_SCE_IRQHandler
.word EXTI9_5_IRQHandler
.word TIM1_BRK_IRQHandler
.word TIM1_UP_IRQHandler
.word TIM1_TRG_COM_IRQHandler
.word TIM1_CC_IRQHandler
.word TIM2_IRQHandler
.word TIM3_IRQHandler
.word TIM4_IRQHandler
.word I2C1_EV_IRQHandler
.word I2C1_ER_IRQHandler
.word I2C2_EV_IRQHandler
.word I2C2_ER_IRQHandler
.word SPI1_IRQHandler
.word SPI2_IRQHandler
.word USART1_IRQHandler
.word USART2_IRQHandler
.word USART3_IRQHandler
.word EXTI15_10_IRQHandler
.word RTC_Alarm_IRQHandler
.word USBWakeUp_IRQHandler
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word BootRAM /* @0x108. This is for boot in RAM mode for
STM32F10x Medium Density devices. */
/*******************************************************************************
*
* Provide weak aliases for each Exception handler to the Default_Handler.
* As they are weak aliases, any function with the same name will override
* this definition.
*
*******************************************************************************/
.weak NMI_Handler
.thumb_set NMI_Handler,Default_Handler
.weak HardFault_Handler
.thumb_set HardFault_Handler,Default_Handler
.weak MemManage_Handler
.thumb_set MemManage_Handler,Default_Handler
.weak BusFault_Handler
.thumb_set BusFault_Handler,Default_Handler
.weak UsageFault_Handler
.thumb_set UsageFault_Handler,Default_Handler
.weak SVC_Handler
.thumb_set SVC_Handler,Default_Handler
.weak DebugMon_Handler
.thumb_set DebugMon_Handler,Default_Handler
.weak PendSV_Handler
.thumb_set PendSV_Handler,Default_Handler
.weak SysTick_Handler
.thumb_set SysTick_Handler,Default_Handler
.weak WWDG_IRQHandler
.thumb_set WWDG_IRQHandler,Default_Handler
.weak PVD_IRQHandler
.thumb_set PVD_IRQHandler,Default_Handler
.weak TAMPER_IRQHandler
.thumb_set TAMPER_IRQHandler,Default_Handler
.weak RTC_IRQHandler
.thumb_set RTC_IRQHandler,Default_Handler
.weak FLASH_IRQHandler
.thumb_set FLASH_IRQHandler,Default_Handler
.weak RCC_IRQHandler
.thumb_set RCC_IRQHandler,Default_Handler
.weak EXTI0_IRQHandler
.thumb_set EXTI0_IRQHandler,Default_Handler
.weak EXTI1_IRQHandler
.thumb_set EXTI1_IRQHandler,Default_Handler
.weak EXTI2_IRQHandler
.thumb_set EXTI2_IRQHandler,Default_Handler
.weak EXTI3_IRQHandler
.thumb_set EXTI3_IRQHandler,Default_Handler
.weak EXTI4_IRQHandler
.thumb_set EXTI4_IRQHandler,Default_Handler
.weak DMA1_Channel1_IRQHandler
.thumb_set DMA1_Channel1_IRQHandler,Default_Handler
.weak DMA1_Channel2_IRQHandler
.thumb_set DMA1_Channel2_IRQHandler,Default_Handler
.weak DMA1_Channel3_IRQHandler
.thumb_set DMA1_Channel3_IRQHandler,Default_Handler
.weak DMA1_Channel4_IRQHandler
.thumb_set DMA1_Channel4_IRQHandler,Default_Handler
.weak DMA1_Channel5_IRQHandler
.thumb_set DMA1_Channel5_IRQHandler,Default_Handler
.weak DMA1_Channel6_IRQHandler
.thumb_set DMA1_Channel6_IRQHandler,Default_Handler
.weak DMA1_Channel7_IRQHandler
.thumb_set DMA1_Channel7_IRQHandler,Default_Handler
.weak ADC1_2_IRQHandler
.thumb_set ADC1_2_IRQHandler,Default_Handler
.weak USB_HP_CAN1_TX_IRQHandler
.thumb_set USB_HP_CAN1_TX_IRQHandler,Default_Handler
.weak USB_LP_CAN1_RX0_IRQHandler
.thumb_set USB_LP_CAN1_RX0_IRQHandler,Default_Handler
.weak CAN1_RX1_IRQHandler
.thumb_set CAN1_RX1_IRQHandler,Default_Handler
.weak CAN1_SCE_IRQHandler
.thumb_set CAN1_SCE_IRQHandler,Default_Handler
.weak EXTI9_5_IRQHandler
.thumb_set EXTI9_5_IRQHandler,Default_Handler
.weak TIM1_BRK_IRQHandler
.thumb_set TIM1_BRK_IRQHandler,Default_Handler
.weak TIM1_UP_IRQHandler
.thumb_set TIM1_UP_IRQHandler,Default_Handler
.weak TIM1_TRG_COM_IRQHandler
.thumb_set TIM1_TRG_COM_IRQHandler,Default_Handler
.weak TIM1_CC_IRQHandler
.thumb_set TIM1_CC_IRQHandler,Default_Handler
.weak TIM2_IRQHandler
.thumb_set TIM2_IRQHandler,Default_Handler
.weak TIM3_IRQHandler
.thumb_set TIM3_IRQHandler,Default_Handler
.weak TIM4_IRQHandler
.thumb_set TIM4_IRQHandler,Default_Handler
.weak I2C1_EV_IRQHandler
.thumb_set I2C1_EV_IRQHandler,Default_Handler
.weak I2C1_ER_IRQHandler
.thumb_set I2C1_ER_IRQHandler,Default_Handler
.weak I2C2_EV_IRQHandler
.thumb_set I2C2_EV_IRQHandler,Default_Handler
.weak I2C2_ER_IRQHandler
.thumb_set I2C2_ER_IRQHandler,Default_Handler
.weak SPI1_IRQHandler
.thumb_set SPI1_IRQHandler,Default_Handler
.weak SPI2_IRQHandler
.thumb_set SPI2_IRQHandler,Default_Handler
.weak USART1_IRQHandler
.thumb_set USART1_IRQHandler,Default_Handler
.weak USART2_IRQHandler
.thumb_set USART2_IRQHandler,Default_Handler
.weak USART3_IRQHandler
.thumb_set USART3_IRQHandler,Default_Handler
.weak EXTI15_10_IRQHandler
.thumb_set EXTI15_10_IRQHandler,Default_Handler
.weak RTC_Alarm_IRQHandler
.thumb_set RTC_Alarm_IRQHandler,Default_Handler
.weak USBWakeUp_IRQHandler
.thumb_set USBWakeUp_IRQHandler,Default_Handler
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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system/src/cmsis/system_stm32f1xx.c Normal file
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/**
******************************************************************************
* @file system_stm32f1xx.c
* @author MCD Application Team
* @version V4.1.0
* @date 29-April-2016
* @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
*
* 1. This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
* factors, AHB/APBx prescalers and Flash settings).
* This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32f1xx_xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* 2. After each device reset the HSI (8 MHz) is used as system clock source.
* Then SystemInit() function is called, in "startup_stm32f1xx_xx.s" file, to
* configure the system clock before to branch to main program.
*
* 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depending on
* the product used), refer to "HSE_VALUE".
* When HSE is used as system clock source, directly or through PLL, and you
* are using different crystal you have to adapt the HSE value to your own
* configuration.
*
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f1xx_system
* @{
*/
/** @addtogroup STM32F1xx_System_Private_Includes
* @{
*/
#include "stm32f1xx.h"
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Defines
* @{
*/
#if !defined (HSE_VALUE)
#define HSE_VALUE ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz.
This value can be provided and adapted by the user application. */
#endif /* HSE_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz.
This value can be provided and adapted by the user application. */
#endif /* HSI_VALUE */
/*!< Uncomment the following line if you need to use external SRAM */
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
/* #define DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/*!< Uncomment the following line if you need to relocate your vector Table in
Internal SRAM. */
/* #define VECT_TAB_SRAM */
#define VECT_TAB_OFFSET 0x0 /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Variables
* @{
*/
/*******************************************************************************
* Clock Definitions
*******************************************************************************/
#if defined(STM32F100xB) ||defined(STM32F100xE)
uint32_t SystemCoreClock = 24000000; /*!< System Clock Frequency (Core Clock) */
#else /*!< HSI Selected as System Clock source */
uint32_t SystemCoreClock = 72000000; /*!< System Clock Frequency (Core Clock) */
#endif
const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_FunctionPrototypes
* @{
*/
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
#ifdef DATA_IN_ExtSRAM
static void SystemInit_ExtMemCtl(void);
#endif /* DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system
* Initialize the Embedded Flash Interface, the PLL and update the
* SystemCoreClock variable.
* @note This function should be used only after reset.
* @param None
* @retval None
*/
void SystemInit (void)
{
/* Reset the RCC clock configuration to the default reset state(for debug purpose) */
/* Set HSION bit */
RCC->CR |= (uint32_t)0x00000001;
/* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
#if !defined(STM32F105xC) && !defined(STM32F107xC)
RCC->CFGR &= (uint32_t)0xF8FF0000;
#else
RCC->CFGR &= (uint32_t)0xF0FF0000;
#endif /* STM32F105xC */
/* Reset HSEON, CSSON and PLLON bits */
RCC->CR &= (uint32_t)0xFEF6FFFF;
/* Reset HSEBYP bit */
RCC->CR &= (uint32_t)0xFFFBFFFF;
/* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
RCC->CFGR &= (uint32_t)0xFF80FFFF;
#if defined(STM32F105xC) || defined(STM32F107xC)
/* Reset PLL2ON and PLL3ON bits */
RCC->CR &= (uint32_t)0xEBFFFFFF;
/* Disable all interrupts and clear pending bits */
RCC->CIR = 0x00FF0000;
/* Reset CFGR2 register */
RCC->CFGR2 = 0x00000000;
#elif defined(STM32F100xB) || defined(STM32F100xE)
/* Disable all interrupts and clear pending bits */
RCC->CIR = 0x009F0000;
/* Reset CFGR2 register */
RCC->CFGR2 = 0x00000000;
#else
/* Disable all interrupts and clear pending bits */
RCC->CIR = 0x009F0000;
#endif /* STM32F105xC */
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
#ifdef DATA_IN_ExtSRAM
SystemInit_ExtMemCtl();
#endif /* DATA_IN_ExtSRAM */
#endif
#ifdef VECT_TAB_SRAM
SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
#else
SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
#endif
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
* or HSI_VALUE(*) multiplied by the PLL factors.
*
* (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
* 8 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
* 8 MHz or 25 MHz, depending on the product used), user has to ensure
* that HSE_VALUE is same as the real frequency of the crystal used.
* Otherwise, this function may have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
* @param None
* @retval None
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0;
#if defined(STM32F105xC) || defined(STM32F107xC)
uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0;
#endif /* STM32F105xC */
#if defined(STM32F100xB) || defined(STM32F100xE)
uint32_t prediv1factor = 0;
#endif /* STM32F100xB or STM32F100xE */
/* Get SYSCLK source -------------------------------------------------------*/
tmp = RCC->CFGR & RCC_CFGR_SWS;
switch (tmp)
{
case 0x00: /* HSI used as system clock */
SystemCoreClock = HSI_VALUE;
break;
case 0x04: /* HSE used as system clock */
SystemCoreClock = HSE_VALUE;
break;
case 0x08: /* PLL used as system clock */
/* Get PLL clock source and multiplication factor ----------------------*/
pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
#if !defined(STM32F105xC) && !defined(STM32F107xC)
pllmull = ( pllmull >> 18) + 2;
if (pllsource == 0x00)
{
/* HSI oscillator clock divided by 2 selected as PLL clock entry */
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
else
{
#if defined(STM32F100xB) || defined(STM32F100xE)
prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
/* HSE oscillator clock selected as PREDIV1 clock entry */
SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
#else
/* HSE selected as PLL clock entry */
if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
{/* HSE oscillator clock divided by 2 */
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
}
else
{
SystemCoreClock = HSE_VALUE * pllmull;
}
#endif
}
#else
pllmull = pllmull >> 18;
if (pllmull != 0x0D)
{
pllmull += 2;
}
else
{ /* PLL multiplication factor = PLL input clock * 6.5 */
pllmull = 13 / 2;
}
if (pllsource == 0x00)
{
/* HSI oscillator clock divided by 2 selected as PLL clock entry */
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
else
{/* PREDIV1 selected as PLL clock entry */
/* Get PREDIV1 clock source and division factor */
prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
if (prediv1source == 0)
{
/* HSE oscillator clock selected as PREDIV1 clock entry */
SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
}
else
{/* PLL2 clock selected as PREDIV1 clock entry */
/* Get PREDIV2 division factor and PLL2 multiplication factor */
prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4) + 1;
pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8 ) + 2;
SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
}
}
#endif /* STM32F105xC */
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
/* Compute HCLK clock frequency ----------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
/* HCLK clock frequency */
SystemCoreClock >>= tmp;
}
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
/**
* @brief Setup the external memory controller. Called in startup_stm32f1xx.s
* before jump to __main
* @param None
* @retval None
*/
#ifdef DATA_IN_ExtSRAM
/**
* @brief Setup the external memory controller.
* Called in startup_stm32f1xx_xx.s/.c before jump to main.
* This function configures the external SRAM mounted on STM3210E-EVAL
* board (STM32 High density devices). This SRAM will be used as program
* data memory (including heap and stack).
* @param None
* @retval None
*/
void SystemInit_ExtMemCtl(void)
{
__IO uint32_t tmpreg;
/*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
required, then adjust the Register Addresses */
/* Enable FSMC clock */
RCC->AHBENR = 0x00000114;
/* Delay after an RCC peripheral clock enabling */
tmpreg = READ_BIT(RCC->AHBENR, RCC_AHBENR_FSMCEN);
/* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
RCC->APB2ENR = 0x000001E0;
/* Delay after an RCC peripheral clock enabling */
tmpreg = READ_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPDEN);
(void)(tmpreg);
/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
/*---------------- SRAM Address lines configuration -------------------------*/
/*---------------- NOE and NWE configuration --------------------------------*/
/*---------------- NE3 configuration ----------------------------------------*/
/*---------------- NBL0, NBL1 configuration ---------------------------------*/
GPIOD->CRL = 0x44BB44BB;
GPIOD->CRH = 0xBBBBBBBB;
GPIOE->CRL = 0xB44444BB;
GPIOE->CRH = 0xBBBBBBBB;
GPIOF->CRL = 0x44BBBBBB;
GPIOF->CRH = 0xBBBB4444;
GPIOG->CRL = 0x44BBBBBB;
GPIOG->CRH = 0x444B4B44;
/*---------------- FSMC Configuration ---------------------------------------*/
/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
FSMC_Bank1->BTCR[4] = 0x00001091;
FSMC_Bank1->BTCR[5] = 0x00110212;
}
#endif /* DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#include "cmsis_device.h"
// ----------------------------------------------------------------------------
extern unsigned int __vectors_start;
// Forward declarations.
void
__initialize_hardware_early(void);
void
__initialize_hardware(void);
// ----------------------------------------------------------------------------
// This is the early hardware initialisation routine, it can be
// redefined in the application for more complex cases that
// require early inits (before BSS init).
//
// Called early from _start(), right before data & bss init.
//
// After Reset the Cortex-M processor is in Thread mode,
// priority is Privileged, and the Stack is set to Main.
void
__attribute__((weak))
__initialize_hardware_early(void)
{
// Call the CSMSIS system initialisation routine.
SystemInit();
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
// Set VTOR to the actual address, provided by the linker script.
// Override the manual, possibly wrong, SystemInit() setting.
SCB->VTOR = (uint32_t)(&__vectors_start);
#endif
// The current version of SystemInit() leaves the value of the clock
// in a RAM variable (SystemCoreClock), which will be cleared shortly,
// so it needs to be recomputed after the RAM initialisations
// are completed.
#if defined(OS_INCLUDE_STARTUP_INIT_FP) || (defined (__VFP_FP__) && !defined (__SOFTFP__))
// Normally FP init is done by SystemInit(). In case this is not done
// there, it is possible to force its inclusion by defining
// OS_INCLUDE_STARTUP_INIT_FP.
// Enable the Cortex-M4 FPU only when -mfloat-abi=hard.
// Code taken from Section 7.1, Cortex-M4 TRM (DDI0439C)
// Set bits 20-23 to enable CP10 and CP11 coprocessor
SCB->CPACR |= (0xF << 20);
#endif // (__VFP_FP__) && !(__SOFTFP__)
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
SCB->SHCSR |= SCB_SHCSR_USGFAULTENA_Msk;
#endif
}
// This is the second hardware initialisation routine, it can be
// redefined in the application for more complex cases that
// require custom inits (before constructors), otherwise these can
// be done in main().
//
// Called from _start(), right after data & bss init, before
// constructors.
void
__attribute__((weak))
__initialize_hardware(void)
{
// Call the CSMSIS system clock routine to store the clock frequency
// in the SystemCoreClock global RAM location.
SystemCoreClockUpdate();
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#include "cmsis_device.h"
// ----------------------------------------------------------------------------
extern void
__attribute__((noreturn))
NVIC_SystemReset(void);
// ----------------------------------------------------------------------------
// Forward declarations
void
__reset_hardware(void);
// ----------------------------------------------------------------------------
// This is the default hardware reset routine; it can be
// redefined in the application for more complex applications.
//
// Called from _exit().
void
__attribute__((weak,noreturn))
__reset_hardware()
{
NVIC_SystemReset();
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#include "cortexm/ExceptionHandlers.h"
#include "cmsis_device.h"
#include "arm/semihosting.h"
#include "diag/Trace.h"
#include <string.h>
// ----------------------------------------------------------------------------
extern void
__attribute__((noreturn,weak))
_start (void);
// ----------------------------------------------------------------------------
// Default exception handlers. Override the ones here by defining your own
// handler routines in your application code.
// ----------------------------------------------------------------------------
#if defined(DEBUG)
// The DEBUG version is not naked, but has a proper stack frame,
// to allow setting breakpoints at Reset_Handler.
void __attribute__ ((section(".after_vectors"),noreturn))
Reset_Handler (void)
{
_start ();
}
#else
// The Release version is optimised to a quick branch to _start.
void __attribute__ ((section(".after_vectors"),naked))
Reset_Handler(void)
{
asm volatile
(
" ldr r0,=_start \n"
" bx r0"
:
:
:
);
}
#endif
void __attribute__ ((section(".after_vectors"),weak))
NMI_Handler (void)
{
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
// ----------------------------------------------------------------------------
#if defined(TRACE)
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
// The values of BFAR and MMFAR stay unchanged if the BFARVALID or
// MMARVALID is set. However, if a new fault occurs during the
// execution of this fault handler, the value of the BFAR and MMFAR
// could potentially be erased. In order to ensure the fault addresses
// accessed are valid, the following procedure should be used:
// 1. Read BFAR/MMFAR.
// 2. Read CFSR to get BFARVALID or MMARVALID. If the value is 0, the
// value of BFAR or MMFAR accessed can be invalid and can be discarded.
// 3. Optionally clear BFARVALID or MMARVALID.
// (See Joseph Yiu's book).
void
dumpExceptionStack (ExceptionStackFrame* frame,
uint32_t cfsr, uint32_t mmfar, uint32_t bfar,
uint32_t lr)
{
trace_printf ("Stack frame:\n");
trace_printf (" R0 = %08X\n", frame->r0);
trace_printf (" R1 = %08X\n", frame->r1);
trace_printf (" R2 = %08X\n", frame->r2);
trace_printf (" R3 = %08X\n", frame->r3);
trace_printf (" R12 = %08X\n", frame->r12);
trace_printf (" LR = %08X\n", frame->lr);
trace_printf (" PC = %08X\n", frame->pc);
trace_printf (" PSR = %08X\n", frame->psr);
trace_printf ("FSR/FAR:\n");
trace_printf (" CFSR = %08X\n", cfsr);
trace_printf (" HFSR = %08X\n", SCB->HFSR);
trace_printf (" DFSR = %08X\n", SCB->DFSR);
trace_printf (" AFSR = %08X\n", SCB->AFSR);
if (cfsr & (1UL << 7))
{
trace_printf (" MMFAR = %08X\n", mmfar);
}
if (cfsr & (1UL << 15))
{
trace_printf (" BFAR = %08X\n", bfar);
}
trace_printf ("Misc\n");
trace_printf (" LR/EXC_RETURN= %08X\n", lr);
}
#endif // defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
#if defined(__ARM_ARCH_6M__)
void
dumpExceptionStack (ExceptionStackFrame* frame, uint32_t lr)
{
trace_printf ("Stack frame:\n");
trace_printf (" R0 = %08X\n", frame->r0);
trace_printf (" R1 = %08X\n", frame->r1);
trace_printf (" R2 = %08X\n", frame->r2);
trace_printf (" R3 = %08X\n", frame->r3);
trace_printf (" R12 = %08X\n", frame->r12);
trace_printf (" LR = %08X\n", frame->lr);
trace_printf (" PC = %08X\n", frame->pc);
trace_printf (" PSR = %08X\n", frame->psr);
trace_printf ("Misc\n");
trace_printf (" LR/EXC_RETURN= %08X\n", lr);
}
#endif // defined(__ARM_ARCH_6M__)
#endif // defined(TRACE)
// ----------------------------------------------------------------------------
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
#if defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT) || defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
int
isSemihosting (ExceptionStackFrame* frame, uint16_t opCode);
/**
* This function provides the minimum functionality to make a semihosting program execute even without the debugger present.
* @param frame pointer to an exception stack frame.
* @param opCode the 16-bin word of the BKPT instruction.
* @return 1 if the instruction was a valid semihosting call; 0 otherwise.
*/
int
isSemihosting (ExceptionStackFrame* frame, uint16_t opCode)
{
uint16_t* pw = (uint16_t*) frame->pc;
if (*pw == opCode)
{
uint32_t r0 = frame->r0;
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS) || defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
uint32_t r1 = frame->r1;
#endif
#if defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
uint32_t* blk = (uint32_t*) r1;
#endif
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
// trace_printf ("sh r0=%d\n", r0);
#endif
switch (r0)
{
#if defined(OS_USE_SEMIHOSTING)
case SEMIHOSTING_SYS_CLOCK:
case SEMIHOSTING_SYS_ELAPSED:
case SEMIHOSTING_SYS_FLEN:
case SEMIHOSTING_SYS_GET_CMDLINE:
case SEMIHOSTING_SYS_REMOVE:
case SEMIHOSTING_SYS_RENAME:
case SEMIHOSTING_SYS_SEEK:
case SEMIHOSTING_SYS_SYSTEM:
case SEMIHOSTING_SYS_TICKFREQ:
case SEMIHOSTING_SYS_TMPNAM:
case SEMIHOSTING_SYS_ISTTY:
frame->r0 = (uint32_t)-1; // the call is not successful or not supported
break;
case SEMIHOSTING_SYS_CLOSE:
frame->r0 = 0; // call is successful
break;
case SEMIHOSTING_SYS_ERRNO:
frame->r0 = 0; // the value of the C library errno variable.
break;
case SEMIHOSTING_SYS_HEAPINFO:
blk[0] = 0; // heap_base
blk[1] = 0; // heap_limit
blk[2] = 0; // stack_base
blk[3] = 0; // stack_limit
break;
case SEMIHOSTING_SYS_ISERROR:
frame->r0 = 0; // 0 if the status word is not an error indication
break;
case SEMIHOSTING_SYS_READ:
// If R0 contains the same value as word 3, the call has
// failed and EOF is assumed.
frame->r0 = blk[2];
break;
case SEMIHOSTING_SYS_READC:
frame->r0 = '\0'; // the byte read from the console.
break;
case SEMIHOSTING_SYS_TIME:
frame->r0 = 0; // the number of seconds since 00:00 January 1, 1970.
break;
case SEMIHOSTING_ReportException:
NVIC_SystemReset ();
// Should not reach here
return 0;
#endif // defined(OS_USE_SEMIHOSTING)
#if defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
#define HANDLER_STDIN (1)
#define HANDLER_STDOUT (2)
#define HANDLER_STDERR (3)
case SEMIHOSTING_SYS_OPEN:
// Process only standard io/out/err and return 1/2/3
if (strcmp ((char*) blk[0], ":tt") == 0)
{
if ((blk[1] == 0))
{
frame->r0 = HANDLER_STDIN;
break;
}
else if (blk[1] == 4)
{
frame->r0 = HANDLER_STDOUT;
break;
}
else if (blk[1] == 8)
{
frame->r0 = HANDLER_STDERR;
break;
}
}
frame->r0 = (uint32_t)-1; // the call is not successful or not supported
break;
case SEMIHOSTING_SYS_WRITE:
// Silently ignore writes to stdout/stderr, fail on all other handler.
if ((blk[0] == HANDLER_STDOUT) || (blk[0] == HANDLER_STDERR))
{
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
frame->r0 = (uint32_t) blk[2]
- trace_write ((char*) blk[1], blk[2]);
#else
frame->r0 = 0; // all sent, no more.
#endif // defined(OS_DEBUG_SEMIHOSTING_FAULTS)
}
else
{
// If other handler, return the total number of bytes
// as the number of bytes that are not written.
frame->r0 = blk[2];
}
break;
#endif // defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
#if defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT) || defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
case SEMIHOSTING_SYS_WRITEC:
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
{
char ch = *((char*) r1);
trace_write (&ch, 1);
}
#endif
// Register R0 is corrupted.
break;
case SEMIHOSTING_SYS_WRITE0:
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
{
char* p = ((char*) r1);
trace_write (p, strlen (p));
}
#endif
// Register R0 is corrupted.
break;
#endif
default:
return 0;
}
// Alter the PC to make the exception returns to
// the instruction after the faulty BKPT.
frame->pc += 2;
return 1;
}
return 0;
}
#endif
// Hard Fault handler wrapper in assembly.
// It extracts the location of stack frame and passes it to handler
// in C as a pointer. We also pass the LR value as second
// parameter.
// (Based on Joseph Yiu's, The Definitive Guide to ARM Cortex-M3 and
// Cortex-M4 Processors, Third Edition, Chap. 12.8, page 402).
void __attribute__ ((section(".after_vectors"),weak,naked))
HardFault_Handler (void)
{
asm volatile(
" tst lr,#4 \n"
" ite eq \n"
" mrseq r0,msp \n"
" mrsne r0,psp \n"
" mov r1,lr \n"
" ldr r2,=HardFault_Handler_C \n"
" bx r2"
: /* Outputs */
: /* Inputs */
: /* Clobbers */
);
}
void __attribute__ ((section(".after_vectors"),weak,used))
HardFault_Handler_C (ExceptionStackFrame* frame __attribute__((unused)),
uint32_t lr __attribute__((unused)))
{
#if defined(TRACE)
uint32_t mmfar = SCB->MMFAR; // MemManage Fault Address
uint32_t bfar = SCB->BFAR; // Bus Fault Address
uint32_t cfsr = SCB->CFSR; // Configurable Fault Status Registers
#endif
#if defined(OS_USE_SEMIHOSTING) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT) || defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
// If the BKPT instruction is executed with C_DEBUGEN == 0 and MON_EN == 0,
// it will cause the processor to enter a HardFault exception, with DEBUGEVT
// in the Hard Fault Status register (HFSR) set to 1, and BKPT in the
// Debug Fault Status register (DFSR) also set to 1.
if (((SCB->DFSR & SCB_DFSR_BKPT_Msk) != 0)
&& ((SCB->HFSR & SCB_HFSR_DEBUGEVT_Msk) != 0))
{
if (isSemihosting (frame, 0xBE00 + (AngelSWI & 0xFF)))
{
// Clear the exception cause in exception status.
SCB->HFSR = SCB_HFSR_DEBUGEVT_Msk;
// Continue after the BKPT
return;
}
}
#endif
#if defined(TRACE)
trace_printf ("[HardFault]\n");
dumpExceptionStack (frame, cfsr, mmfar, bfar, lr);
#endif // defined(TRACE)
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
#endif // defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
#if defined(__ARM_ARCH_6M__)
// Hard Fault handler wrapper in assembly.
// It extracts the location of stack frame and passes it to handler
// in C as a pointer. We also pass the LR value as second
// parameter.
// (Based on Joseph Yiu's, The Definitive Guide to ARM Cortex-M0
// First Edition, Chap. 12.8, page 402).
void __attribute__ ((section(".after_vectors"),weak,naked))
HardFault_Handler (void)
{
asm volatile(
" movs r0,#4 \n"
" mov r1,lr \n"
" tst r0,r1 \n"
" beq 1f \n"
" mrs r0,psp \n"
" b 2f \n"
"1: \n"
" mrs r0,msp \n"
"2:"
" mov r1,lr \n"
" ldr r2,=HardFault_Handler_C \n"
" bx r2"
: /* Outputs */
: /* Inputs */
: /* Clobbers */
);
}
void __attribute__ ((section(".after_vectors"),weak,used))
HardFault_Handler_C (ExceptionStackFrame* frame __attribute__((unused)),
uint32_t lr __attribute__((unused)))
{
// There is no semihosting support for Cortex-M0, since on ARMv6-M
// faults are fatal and it is not possible to return from the handler.
#if defined(TRACE)
trace_printf ("[HardFault]\n");
dumpExceptionStack (frame, lr);
#endif // defined(TRACE)
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
#endif // defined(__ARM_ARCH_6M__)
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
void __attribute__ ((section(".after_vectors"),weak))
MemManage_Handler (void)
{
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
void __attribute__ ((section(".after_vectors"),weak,naked))
BusFault_Handler (void)
{
asm volatile(
" tst lr,#4 \n"
" ite eq \n"
" mrseq r0,msp \n"
" mrsne r0,psp \n"
" mov r1,lr \n"
" ldr r2,=BusFault_Handler_C \n"
" bx r2"
: /* Outputs */
: /* Inputs */
: /* Clobbers */
);
}
void __attribute__ ((section(".after_vectors"),weak,used))
BusFault_Handler_C (ExceptionStackFrame* frame __attribute__((unused)),
uint32_t lr __attribute__((unused)))
{
#if defined(TRACE)
uint32_t mmfar = SCB->MMFAR; // MemManage Fault Address
uint32_t bfar = SCB->BFAR; // Bus Fault Address
uint32_t cfsr = SCB->CFSR; // Configurable Fault Status Registers
trace_printf ("[BusFault]\n");
dumpExceptionStack (frame, cfsr, mmfar, bfar, lr);
#endif // defined(TRACE)
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
void __attribute__ ((section(".after_vectors"),weak,naked))
UsageFault_Handler (void)
{
asm volatile(
" tst lr,#4 \n"
" ite eq \n"
" mrseq r0,msp \n"
" mrsne r0,psp \n"
" mov r1,lr \n"
" ldr r2,=UsageFault_Handler_C \n"
" bx r2"
: /* Outputs */
: /* Inputs */
: /* Clobbers */
);
}
void __attribute__ ((section(".after_vectors"),weak,used))
UsageFault_Handler_C (ExceptionStackFrame* frame __attribute__((unused)),
uint32_t lr __attribute__((unused)))
{
#if defined(TRACE)
uint32_t mmfar = SCB->MMFAR; // MemManage Fault Address
uint32_t bfar = SCB->BFAR; // Bus Fault Address
uint32_t cfsr = SCB->CFSR; // Configurable Fault Status Registers
#endif
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
if ((cfsr & (1UL << 16)) != 0) // UNDEFINSTR
{
// For testing purposes, instead of BKPT use 'setend be'.
if (isSemihosting (frame, AngelSWITestFaultOpCode))
{
return;
}
}
#endif
#if defined(TRACE)
trace_printf ("[UsageFault]\n");
dumpExceptionStack (frame, cfsr, mmfar, bfar, lr);
#endif // defined(TRACE)
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
#endif
void __attribute__ ((section(".after_vectors"),weak))
SVC_Handler (void)
{
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
void __attribute__ ((section(".after_vectors"),weak))
DebugMon_Handler (void)
{
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
#endif
void __attribute__ ((section(".after_vectors"),weak))
PendSV_Handler (void)
{
#if defined(DEBUG)
__DEBUG_BKPT();
#endif
while (1)
{
}
}
void __attribute__ ((section(".after_vectors"),weak))
SysTick_Handler (void)
{
// DO NOT loop, just return.
// Useful in case someone (like STM HAL) inadvertently enables SysTick.
;
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#if defined(TRACE)
#include <stdio.h>
#include <stdarg.h>
#include "diag/Trace.h"
#include "string.h"
#ifndef OS_INTEGER_TRACE_PRINTF_TMP_ARRAY_SIZE
#define OS_INTEGER_TRACE_PRINTF_TMP_ARRAY_SIZE (128)
#endif
// ----------------------------------------------------------------------------
int
trace_printf(const char* format, ...)
{
int ret;
va_list ap;
va_start (ap, format);
// TODO: rewrite it to no longer use newlib, it is way too heavy
static char buf[OS_INTEGER_TRACE_PRINTF_TMP_ARRAY_SIZE];
// Print to the local buffer
ret = vsnprintf (buf, sizeof(buf), format, ap);
if (ret > 0)
{
// Transfer the buffer to the device
ret = trace_write (buf, (size_t)ret);
}
va_end (ap);
return ret;
}
int
trace_puts(const char *s)
{
trace_write(s, strlen(s));
return trace_write("\n", 1);
}
int
trace_putchar(int c)
{
trace_write((const char*)&c, 1);
return c;
}
void
trace_dump_args(int argc, char* argv[])
{
trace_printf("main(argc=%d, argv=[", argc);
for (int i = 0; i < argc; ++i)
{
if (i != 0)
{
trace_printf(", ");
}
trace_printf("\"%s\"", argv[i]);
}
trace_printf("]);\n");
}
// ----------------------------------------------------------------------------
#endif // TRACE

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#if defined(TRACE)
#include "cmsis_device.h"
#include "diag/Trace.h"
// ----------------------------------------------------------------------------
// One of these definitions must be passed via the compiler command line
// Note: small Cortex-M0/M0+ might implement a simplified debug interface.
//#define OS_USE_TRACE_ITM
//#define OS_USE_TRACE_SEMIHOSTING_DEBUG
//#define OS_USE_TRACE_SEMIHOSTING_STDOUT
#if !(defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__))
#if defined(OS_USE_TRACE_ITM)
#undef OS_USE_TRACE_ITM
#warning "ITM unavailable"
#endif // defined(OS_USE_TRACE_ITM)
#endif // !(defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__))
#if defined(OS_DEBUG_SEMIHOSTING_FAULTS)
#if defined(OS_USE_TRACE_SEMIHOSTING_STDOUT) || defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
#error "Cannot debug semihosting using semihosting trace; use OS_USE_TRACE_ITM"
#endif
#endif
// ----------------------------------------------------------------------------
// Forward definitions.
#if defined(OS_USE_TRACE_ITM)
static ssize_t
_trace_write_itm (const char* buf, size_t nbyte);
#endif
#if defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
static ssize_t
_trace_write_semihosting_stdout(const char* buf, size_t nbyte);
#endif
#if defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
static ssize_t
_trace_write_semihosting_debug(const char* buf, size_t nbyte);
#endif
// ----------------------------------------------------------------------------
void
trace_initialize(void)
{
// For regular ITM / semihosting, no inits required.
}
// ----------------------------------------------------------------------------
// This function is called from _write() for fd==1 or fd==2 and from some
// of the trace_* functions.
ssize_t
trace_write (const char* buf __attribute__((unused)),
size_t nbyte __attribute__((unused)))
{
#if defined(OS_USE_TRACE_ITM)
return _trace_write_itm (buf, nbyte);
#elif defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
return _trace_write_semihosting_stdout(buf, nbyte);
#elif defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
return _trace_write_semihosting_debug(buf, nbyte);
#endif
return -1;
}
// ----------------------------------------------------------------------------
#if defined(OS_USE_TRACE_ITM)
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
// ITM is the ARM standard mechanism, running over SWD/SWO on Cortex-M3/M4
// devices, and is the recommended setting, if available.
//
// The JLink probe and the GDB server fully support SWD/SWO
// and the JLink Debugging plug-in enables it by default.
// The current OpenOCD does not include support to parse the SWO stream,
// so this configuration will not work on OpenOCD (will not crash, but
// nothing will be displayed in the output console).
#if !defined(OS_INTEGER_TRACE_ITM_STIMULUS_PORT)
#define OS_INTEGER_TRACE_ITM_STIMULUS_PORT (0)
#endif
static ssize_t
_trace_write_itm (const char* buf, size_t nbyte)
{
for (size_t i = 0; i < nbyte; i++)
{
// Check if ITM or the stimulus port are not enabled
if (((ITM->TCR & ITM_TCR_ITMENA_Msk) == 0)
|| ((ITM->TER & (1UL << OS_INTEGER_TRACE_ITM_STIMULUS_PORT)) == 0))
{
return (ssize_t)i; // return the number of sent characters (may be 0)
}
// Wait until STIMx is ready...
while (ITM->PORT[OS_INTEGER_TRACE_ITM_STIMULUS_PORT].u32 == 0)
;
// then send data, one byte at a time
ITM->PORT[OS_INTEGER_TRACE_ITM_STIMULUS_PORT].u8 = (uint8_t) (*buf++);
}
return (ssize_t)nbyte; // all characters successfully sent
}
#endif // defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
#endif // OS_USE_TRACE_ITM
// ----------------------------------------------------------------------------
#if defined(OS_USE_TRACE_SEMIHOSTING_DEBUG) || defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
#include "arm/semihosting.h"
// Semihosting is the other output channel that can be used for the trace
// messages. It comes in two flavours: STDOUT and DEBUG. The STDOUT channel
// is the equivalent of the stdout in POSIX and in most cases it is forwarded
// to the GDB server stdout stream. The debug channel is a separate
// channel. STDOUT is buffered, so nothing is displayed until a \n;
// DEBUG is not buffered, but can be slow.
//
// Choosing between semihosting stdout and debug depends on the capabilities
// of your GDB server, and also on specific needs. It is recommended to test
// DEBUG first, and if too slow, try STDOUT.
//
// The JLink GDB server fully support semihosting, and both configurations
// are available; to activate it, use "monitor semihosting enable" or check
// the corresponding button in the JLink Debugging plug-in.
// In OpenOCD, support for semihosting can be enabled using
// "monitor arm semihosting enable".
//
// Note: Applications built with semihosting output active normally cannot
// be executed without the debugger connected and active, since they use
// BKPT to communicate with the host. However, with a carefully written
// HardFault_Handler, the semihosting BKPT calls can be processed, making
// possible to run semihosting applications as standalone, without being
// terminated with hardware faults.
#endif // OS_USE_TRACE_SEMIHOSTING_DEBUG_*
// ----------------------------------------------------------------------------
#if defined(OS_USE_TRACE_SEMIHOSTING_STDOUT)
static ssize_t
_trace_write_semihosting_stdout (const char* buf, size_t nbyte)
{
static int handle;
void* block[3];
int ret;
if (handle == 0)
{
// On the first call get the file handle from the host
block[0] = ":tt"; // special filename to be used for stdin/out/err
block[1] = (void*) 4; // mode "w"
// length of ":tt", except null terminator
block[2] = (void*) (sizeof(":tt") - 1);
ret = call_host (SEMIHOSTING_SYS_OPEN, (void*) block);
if (ret == -1)
return -1;
handle = ret;
}
block[0] = (void*) handle;
block[1] = (void*) buf;
block[2] = (void*) nbyte;
// send character array to host file/device
ret = call_host (SEMIHOSTING_SYS_WRITE, (void*) block);
// this call returns the number of bytes NOT written (0 if all ok)
// -1 is not a legal value, but SEGGER seems to return it
if (ret == -1)
return -1;
// The compliant way of returning errors
if (ret == (int) nbyte)
return -1;
// Return the number of bytes written
return (ssize_t) (nbyte) - (ssize_t) ret;
}
#endif // OS_USE_TRACE_SEMIHOSTING_STDOUT
// ----------------------------------------------------------------------------
#if defined(OS_USE_TRACE_SEMIHOSTING_DEBUG)
#define OS_INTEGER_TRACE_TMP_ARRAY_SIZE (16)
static ssize_t
_trace_write_semihosting_debug (const char* buf, size_t nbyte)
{
// Since the single character debug channel is quite slow, try to
// optimise and send a null terminated string, if possible.
if (buf[nbyte] == '\0')
{
// send string
call_host (SEMIHOSTING_SYS_WRITE0, (void*) buf);
}
else
{
// If not, use a local buffer to speed things up
char tmp[OS_INTEGER_TRACE_TMP_ARRAY_SIZE];
size_t togo = nbyte;
while (togo > 0)
{
unsigned int n = ((togo < sizeof(tmp)) ? togo : sizeof(tmp));
unsigned int i = 0;
for (; i < n; ++i, ++buf)
{
tmp[i] = *buf;
}
tmp[i] = '\0';
call_host (SEMIHOSTING_SYS_WRITE0, (void*) tmp);
togo -= n;
}
}
// All bytes written
return (ssize_t) nbyte;
}
#endif // OS_USE_TRACE_SEMIHOSTING_DEBUG
#endif // TRACE
// ----------------------------------------------------------------------------

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The following files extend or replace some of the the newlib functionality:
_startup.c: a customised startup sequence, written in C
_exit.c: a customised exit() implementation
_syscalls.c: local versions of the libnosys/librdimon code
_sbrk.c: a custom _sbrk() to match the actual linker scripts
assert.c: implementation for the asserion macros
_cxx.cpp: local versions of some C++ support, to avoid references to
large functions.

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
// These functions are redefined locally, to avoid references to some
// heavy implementations in the standard C++ library.
// ----------------------------------------------------------------------------
#include <cstdlib>
#include <sys/types.h>
#include "diag/Trace.h"
// ----------------------------------------------------------------------------
namespace __gnu_cxx
{
void
__attribute__((noreturn))
__verbose_terminate_handler();
void
__verbose_terminate_handler()
{
trace_puts(__func__);
abort();
}
}
// ----------------------------------------------------------------------------
extern "C"
{
void
__attribute__((noreturn))
__cxa_pure_virtual();
void
__cxa_pure_virtual()
{
trace_puts(__func__);
abort();
}
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#include <stdlib.h>
#include "diag/Trace.h"
// ----------------------------------------------------------------------------
#if !defined(DEBUG)
extern void
__attribute__((noreturn))
__reset_hardware(void);
#endif
// ----------------------------------------------------------------------------
// Forward declaration
void
_exit(int code);
// ----------------------------------------------------------------------------
// On Release, call the hardware reset procedure.
// On Debug we just enter an infinite loop, to be used as landmark when halting
// the debugger.
//
// It can be redefined in the application, if more functionality
// is required.
void
__attribute__((weak))
_exit(int code __attribute__((unused)))
{
#if !defined(DEBUG)
__reset_hardware();
#endif
// TODO: write on trace
while (1)
;
}
// ----------------------------------------------------------------------------
void
__attribute__((weak,noreturn))
abort(void)
{
trace_puts("abort(), exiting...");
_exit(1);
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
#include <sys/types.h>
#include <errno.h>
// ----------------------------------------------------------------------------
caddr_t
_sbrk(int incr);
// ----------------------------------------------------------------------------
// The definitions used here should be kept in sync with the
// stack definitions in the linker script.
caddr_t
_sbrk(int incr)
{
extern char _Heap_Begin; // Defined by the linker.
extern char _Heap_Limit; // Defined by the linker.
static char* current_heap_end;
char* current_block_address;
if (current_heap_end == 0)
{
current_heap_end = &_Heap_Begin;
}
current_block_address = current_heap_end;
// Need to align heap to word boundary, else will get
// hard faults on Cortex-M0. So we assume that heap starts on
// word boundary, hence make sure we always add a multiple of
// 4 to it.
incr = (incr + 3) & (~3); // align value to 4
if (current_heap_end + incr > &_Heap_Limit)
{
// Some of the libstdc++-v3 tests rely upon detecting
// out of memory errors, so do not abort here.
#if 0
extern void abort (void);
_write (1, "_sbrk: Heap and stack collision\n", 32);
abort ();
#else
// Heap has overflowed
errno = ENOMEM;
return (caddr_t) - 1;
#endif
}
current_heap_end += incr;
return (caddr_t) current_block_address;
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
// ----------------------------------------------------------------------------
// This module contains the startup code for a portable embedded
// C/C++ application, built with newlib.
//
// Control reaches here from the reset handler via jump or call.
//
// The actual steps performed by _start are:
// - copy the initialised data region(s)
// - clear the BSS region(s)
// - initialise the system
// - run the preinit/init array (for the C++ static constructors)
// - initialise the arc/argv
// - branch to main()
// - run the fini array (for the C++ static destructors)
// - call _exit(), directly or via exit()
//
// If OS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS is defined, the
// code is capable of initialising multiple regions.
//
// The normal configuration is standalone, with all support
// functions implemented locally.
//
// For this to be called, the project linker must be configured without
// the startup sequence (-nostartfiles).
// ----------------------------------------------------------------------------
#include <stdint.h>
#include <sys/types.h>
// ----------------------------------------------------------------------------
#if !defined(OS_INCLUDE_STARTUP_GUARD_CHECKS)
#define OS_INCLUDE_STARTUP_GUARD_CHECKS (1)
#endif
// ----------------------------------------------------------------------------
#if !defined(OS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS)
// Begin address for the initialisation values of the .data section.
// defined in linker script
extern unsigned int _sidata;
// Begin address for the .data section; defined in linker script
extern unsigned int _sdata;
// End address for the .data section; defined in linker script
extern unsigned int _edata;
// Begin address for the .bss section; defined in linker script
extern unsigned int __bss_start__;
// End address for the .bss section; defined in linker script
extern unsigned int __bss_end__;
#else
// The following symbols are constructs generated by the linker, indicating
// the location of various points in the "Memory regions initialisation arrays".
// These arrays are created by the linker via the managed linker script
// of each RW data mechanism. It contains the load address, execution address
// and length section and the execution and length of each BSS (zero
// initialised) section.
extern unsigned int __data_regions_array_start;
extern unsigned int __data_regions_array_end;
extern unsigned int __bss_regions_array_start;
extern unsigned int __bss_regions_array_end;
#endif
extern void
__initialize_args (int*, char***);
// main() is the entry point for newlib based applications.
// By default, there are no arguments, but this can be customised
// by redefining __initialize_args(), which is done when the
// semihosting configurations are used.
extern int
main (int argc, char* argv[]);
// The implementation for the exit routine; for embedded
// applications, a system reset will be performed.
extern void
__attribute__((noreturn))
_exit (int);
// ----------------------------------------------------------------------------
// Forward declarations
void
_start (void);
void
__initialize_data (unsigned int* from, unsigned int* region_begin,
unsigned int* region_end);
void
__initialize_bss (unsigned int* region_begin, unsigned int* region_end);
void
__run_init_array (void);
void
__run_fini_array (void);
void
__initialize_hardware_early (void);
void
__initialize_hardware (void);
// ----------------------------------------------------------------------------
inline void
__attribute__((always_inline))
__initialize_data (unsigned int* from, unsigned int* region_begin,
unsigned int* region_end)
{
// Iterate and copy word by word.
// It is assumed that the pointers are word aligned.
unsigned int *p = region_begin;
while (p < region_end)
*p++ = *from++;
}
inline void
__attribute__((always_inline))
__initialize_bss (unsigned int* region_begin, unsigned int* region_end)
{
// Iterate and clear word by word.
// It is assumed that the pointers are word aligned.
unsigned int *p = region_begin;
while (p < region_end)
*p++ = 0;
}
// These magic symbols are provided by the linker.
extern void
(*__preinit_array_start[]) (void) __attribute__((weak));
extern void
(*__preinit_array_end[]) (void) __attribute__((weak));
extern void
(*__init_array_start[]) (void) __attribute__((weak));
extern void
(*__init_array_end[]) (void) __attribute__((weak));
extern void
(*__fini_array_start[]) (void) __attribute__((weak));
extern void
(*__fini_array_end[]) (void) __attribute__((weak));
// Iterate over all the preinit/init routines (mainly static constructors).
inline void
__attribute__((always_inline))
__run_init_array (void)
{
int count;
int i;
count = __preinit_array_end - __preinit_array_start;
for (i = 0; i < count; i++)
__preinit_array_start[i] ();
// If you need to run the code in the .init section, please use
// the startup files, since this requires the code in crti.o and crtn.o
// to add the function prologue/epilogue.
//_init(); // DO NOT ENABE THIS!
count = __init_array_end - __init_array_start;
for (i = 0; i < count; i++)
__init_array_start[i] ();
}
// Run all the cleanup routines (mainly static destructors).
inline void
__attribute__((always_inline))
__run_fini_array (void)
{
int count;
int i;
count = __fini_array_end - __fini_array_start;
for (i = count; i > 0; i--)
__fini_array_start[i - 1] ();
// If you need to run the code in the .fini section, please use
// the startup files, since this requires the code in crti.o and crtn.o
// to add the function prologue/epilogue.
//_fini(); // DO NOT ENABE THIS!
}
#if defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
// These definitions are used to check if the routines used to
// clear the BSS and to copy the initialised DATA perform correctly.
#define BSS_GUARD_BAD_VALUE (0xCADEBABA)
static uint32_t volatile __attribute__ ((section(".bss_begin")))
__bss_begin_guard;
static uint32_t volatile __attribute__ ((section(".bss_end")))
__bss_end_guard;
#define DATA_GUARD_BAD_VALUE (0xCADEBABA)
#define DATA_BEGIN_GUARD_VALUE (0x12345678)
#define DATA_END_GUARD_VALUE (0x98765432)
static uint32_t volatile __attribute__ ((section(".data_begin")))
__data_begin_guard = DATA_BEGIN_GUARD_VALUE;
static uint32_t volatile __attribute__ ((section(".data_end")))
__data_end_guard = DATA_END_GUARD_VALUE;
#endif // defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
// This is the place where Cortex-M core will go immediately after reset,
// via a call or jump from the Reset_Handler.
//
// For the call to work, and for the call to __initialize_hardware_early()
// to work, the reset stack must point to a valid internal RAM area.
void __attribute__ ((section(".after_vectors"),noreturn,weak))
_start (void)
{
// Initialise hardware right after reset, to switch clock to higher
// frequency and have the rest of the initialisations run faster.
//
// Mandatory on platforms like Kinetis, which start with the watch dog
// enabled and require an early sequence to disable it.
//
// Also useful on platform with external RAM, that need to be
// initialised before filling the BSS section.
__initialize_hardware_early ();
// Use Old Style DATA and BSS section initialisation,
// that will manage a single BSS sections.
#if defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
__data_begin_guard = DATA_GUARD_BAD_VALUE;
__data_end_guard = DATA_GUARD_BAD_VALUE;
#endif
#if !defined(OS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS)
// Copy the DATA segment from Flash to RAM (inlined).
__initialize_data(&_sidata, &_sdata, &_edata);
#else
// Copy the data sections from flash to SRAM.
for (unsigned int* p = &__data_regions_array_start;
p < &__data_regions_array_end;)
{
unsigned int* from = (unsigned int *) (*p++);
unsigned int* region_begin = (unsigned int *) (*p++);
unsigned int* region_end = (unsigned int *) (*p++);
__initialize_data (from, region_begin, region_end);
}
#endif
#if defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
if ((__data_begin_guard != DATA_BEGIN_GUARD_VALUE)
|| (__data_end_guard != DATA_END_GUARD_VALUE))
{
for (;;)
;
}
#endif
#if defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
__bss_begin_guard = BSS_GUARD_BAD_VALUE;
__bss_end_guard = BSS_GUARD_BAD_VALUE;
#endif
#if !defined(OS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS)
// Zero fill the BSS section (inlined).
__initialize_bss(&__bss_start__, &__bss_end__);
#else
// Zero fill all bss segments
for (unsigned int *p = &__bss_regions_array_start;
p < &__bss_regions_array_end;)
{
unsigned int* region_begin = (unsigned int*) (*p++);
unsigned int* region_end = (unsigned int*) (*p++);
__initialize_bss (region_begin, region_end);
}
#endif
#if defined(DEBUG) && (OS_INCLUDE_STARTUP_GUARD_CHECKS)
if ((__bss_begin_guard != 0) || (__bss_end_guard != 0))
{
for (;;)
;
}
#endif
// Hook to continue the initialisations. Usually compute and store the
// clock frequency in the global CMSIS variable, cleared above.
__initialize_hardware ();
// Get the argc/argv (useful in semihosting configurations).
int argc;
char** argv;
__initialize_args (&argc, &argv);
// Call the standard library initialisation (mandatory for C++ to
// execute the constructors for the static objects).
__run_init_array ();
// Call the main entry point, and save the exit code.
int code = main (argc, argv);
// Run the C++ static destructors.
__run_fini_array ();
_exit (code);
// Should never reach this, _exit() should have already
// performed a reset.
for (;;)
;
}
// ----------------------------------------------------------------------------

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//
// This file is part of the µOS++ III distribution.
// Copyright (c) 2014 Liviu Ionescu.
//
#include <assert.h>
#include <stdlib.h>
#include <stdint.h>
#include "diag/Trace.h"
// ----------------------------------------------------------------------------
void
__attribute__((noreturn))
__assert_func (const char *file, int line, const char *func,
const char *failedexpr)
{
trace_printf ("assertion \"%s\" failed: file \"%s\", line %d%s%s\n",
failedexpr, file, line, func ? ", function: " : "",
func ? func : "");
abort ();
/* NOTREACHED */
}
// ----------------------------------------------------------------------------
// This is STM32 specific, but can be used on other platforms too.
// If you need it, add the following to your application header:
//#ifdef USE_FULL_ASSERT
//#define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))
//void assert_failed(uint8_t* file, uint32_t line);
//#else
//#define assert_param(expr) ((void)0)
//#endif // USE_FULL_ASSERT
#if defined(USE_FULL_ASSERT)
void
assert_failed (uint8_t* file, uint32_t line);
// Called from the assert_param() macro, usually defined in the stm32f*_conf.h
void
__attribute__((noreturn, weak))
assert_failed (uint8_t* file, uint32_t line)
{
trace_printf ("assert_param() failed: file \"%s\", line %d\n", file, line);
abort ();
/* NOTREACHED */
}
#endif // defined(USE_FULL_ASSERT)
// ----------------------------------------------------------------------------

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/**
******************************************************************************
* @file stm32f1xx_hal.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief HAL module driver.
* This is the common part of the HAL initialization
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The common HAL driver contains a set of generic and common APIs that can be
used by the PPP peripheral drivers and the user to start using the HAL.
[..]
The HAL contains two APIs' categories:
(+) Common HAL APIs
(+) Services HAL APIs
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup HAL HAL
* @brief HAL module driver.
* @{
*/
#ifdef HAL_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup HAL_Private_Constants HAL Private Constants
* @{
*/
/**
* @brief STM32F1xx HAL Driver version number
*/
#define __STM32F1xx_HAL_VERSION_MAIN (0x01) /*!< [31:24] main version */
#define __STM32F1xx_HAL_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */
#define __STM32F1xx_HAL_VERSION_SUB2 (0x04) /*!< [15:8] sub2 version */
#define __STM32F1xx_HAL_VERSION_RC (0x00) /*!< [7:0] release candidate */
#define __STM32F1xx_HAL_VERSION ((__STM32F1xx_HAL_VERSION_MAIN << 24)\
|(__STM32F1xx_HAL_VERSION_SUB1 << 16)\
|(__STM32F1xx_HAL_VERSION_SUB2 << 8 )\
|(__STM32F1xx_HAL_VERSION_RC))
#define IDCODE_DEVID_MASK ((uint32_t)0x00000FFF)
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/** @defgroup HAL_Private_Variables HAL Private Variables
* @{
*/
static __IO uint32_t uwTick;
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions ---------------------------------------------------------*/
/** @defgroup HAL_Exported_Functions HAL Exported Functions
* @{
*/
/** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
* @brief Initialization and de-initialization functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Initializes the Flash interface, the NVIC allocation and initial clock
configuration. It initializes the source of time base also when timeout
is needed and the backup domain when enabled.
(+) de-Initializes common part of the HAL.
(+) Configure The time base source to have 1ms time base with a dedicated
Tick interrupt priority.
(++) Systick timer is used by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
(++) Time base configuration function (HAL_InitTick ()) is called automatically
at the beginning of the program after reset by HAL_Init() or at any time
when clock is configured, by HAL_RCC_ClockConfig().
(++) Source of time base is configured to generate interrupts at regular
time intervals. Care must be taken if HAL_Delay() is called from a
peripheral ISR process, the Tick interrupt line must have higher priority
(numerically lower) than the peripheral interrupt. Otherwise the caller
ISR process will be blocked.
(++) functions affecting time base configurations are declared as __Weak
to make override possible in case of other implementations in user file.
@endverbatim
* @{
*/
/**
* @brief This function configures the Flash prefetch,
* Configures time base source, NVIC and Low level hardware
* @note This function is called at the beginning of program after reset and before
* the clock configuration
* @note The time base configuration is based on MSI clock when exiting from Reset.
* Once done, time base tick start incrementing.
* In the default implementation,Systick is used as source of time base.
* The tick variable is incremented each 1ms in its ISR.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_Init(void)
{
/* Configure Flash prefetch */
#if (PREFETCH_ENABLE != 0)
#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
defined(STM32F102x6) || defined(STM32F102xB) || \
defined(STM32F103x6) || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG) || \
defined(STM32F105xC) || defined(STM32F107xC)
/* Prefetch buffer is not available on value line devices */
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
#endif
#endif /* PREFETCH_ENABLE */
/* Set Interrupt Group Priority */
HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
/* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */
HAL_InitTick(TICK_INT_PRIORITY);
/* Init the low level hardware */
HAL_MspInit();
/* Return function status */
return HAL_OK;
}
/**
* @brief This function de-Initializes common part of the HAL and stops the source
* of time base.
* @note This function is optional.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DeInit(void)
{
/* Reset of all peripherals */
__HAL_RCC_APB1_FORCE_RESET();
__HAL_RCC_APB1_RELEASE_RESET();
__HAL_RCC_APB2_FORCE_RESET();
__HAL_RCC_APB2_RELEASE_RESET();
#if defined(STM32F105xC) || defined(STM32F107xC)
__HAL_RCC_AHB_FORCE_RESET();
__HAL_RCC_AHB_RELEASE_RESET();
#endif
/* De-Init the low level hardware */
HAL_MspDeInit();
/* Return function status */
return HAL_OK;
}
/**
* @brief Initializes the MSP.
* @retval None
*/
__weak void HAL_MspInit(void)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_MspInit could be implemented in the user file
*/
}
/**
* @brief DeInitializes the MSP.
* @retval None
*/
__weak void HAL_MspDeInit(void)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_MspDeInit could be implemented in the user file
*/
}
/**
* @brief This function configures the source of the time base.
* The time source is configured to have 1ms time base with a dedicated
* Tick interrupt priority.
* @note This function is called automatically at the beginning of program after
* reset by HAL_Init() or at any time when clock is reconfigured by HAL_RCC_ClockConfig().
* @note In the default implementation, SysTick timer is the source of time base.
* It is used to generate interrupts at regular time intervals.
* Care must be taken if HAL_Delay() is called from a peripheral ISR process,
* The the SysTick interrupt must have higher priority (numerically lower)
* than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
* The function is declared as __Weak to be overwritten in case of other
* implementation in user file.
* @param TickPriority: Tick interrupt priority.
* @retval HAL status
*/
__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
/*Configure the SysTick to have interrupt in 1ms time basis*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/*Configure the SysTick IRQ priority */
HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0);
/* Return function status */
return HAL_OK;
}
/**
* @}
*/
/** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
* @brief HAL Control functions
*
@verbatim
===============================================================================
##### HAL Control functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Provide a tick value in millisecond
(+) Provide a blocking delay in millisecond
(+) Suspend the time base source interrupt
(+) Resume the time base source interrupt
(+) Get the HAL API driver version
(+) Get the device identifier
(+) Get the device revision identifier
(+) Enable/Disable Debug module during Sleep mode
(+) Enable/Disable Debug module during STOP mode
(+) Enable/Disable Debug module during STANDBY mode
@endverbatim
* @{
*/
/**
* @brief This function is called to increment a global variable "uwTick"
* used as application time base.
* @note In the default implementation, this variable is incremented each 1ms
* in Systick ISR.
* @note This function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @retval None
*/
__weak void HAL_IncTick(void)
{
uwTick++;
}
/**
* @brief Provides a tick value in millisecond.
* @note This function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @retval tick value
*/
__weak uint32_t HAL_GetTick(void)
{
return uwTick;
}
/**
* @brief This function provides accurate delay (in milliseconds) based
* on variable incremented.
* @note In the default implementation , SysTick timer is the source of time base.
* It is used to generate interrupts at regular time intervals where uwTick
* is incremented.
* @note ThiS function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @param Delay: specifies the delay time length, in milliseconds.
* @retval None
*/
__weak void HAL_Delay(__IO uint32_t Delay)
{
uint32_t tickstart = 0;
tickstart = HAL_GetTick();
while((HAL_GetTick() - tickstart) < Delay)
{
}
}
/**
* @brief Suspend Tick increment.
* @note In the default implementation , SysTick timer is the source of time base. It is
* used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
* is called, the the SysTick interrupt will be disabled and so Tick increment
* is suspended.
* @note This function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @retval None
*/
__weak void HAL_SuspendTick(void)
{
/* Disable SysTick Interrupt */
CLEAR_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
}
/**
* @brief Resume Tick increment.
* @note In the default implementation , SysTick timer is the source of time base. It is
* used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
* is called, the the SysTick interrupt will be enabled and so Tick increment
* is resumed.
* @note This function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @retval None
*/
__weak void HAL_ResumeTick(void)
{
/* Enable SysTick Interrupt */
SET_BIT(SysTick->CTRL,SysTick_CTRL_TICKINT_Msk);
}
/**
* @brief This method returns the HAL revision
* @retval version: 0xXYZR (8bits for each decimal, R for RC)
*/
uint32_t HAL_GetHalVersion(void)
{
return __STM32F1xx_HAL_VERSION;
}
/**
* @brief Returns the device revision identifier.
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval Device revision identifier
*/
uint32_t HAL_GetREVID(void)
{
return((DBGMCU->IDCODE) >> POSITION_VAL(DBGMCU_IDCODE_REV_ID));
}
/**
* @brief Returns the device identifier.
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval Device identifier
*/
uint32_t HAL_GetDEVID(void)
{
return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
}
/**
* @brief Enable the Debug Module during SLEEP mode
* @retval None
*/
void HAL_DBGMCU_EnableDBGSleepMode(void)
{
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
}
/**
* @brief Disable the Debug Module during SLEEP mode
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval None
*/
void HAL_DBGMCU_DisableDBGSleepMode(void)
{
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
}
/**
* @brief Enable the Debug Module during STOP mode
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* Note: On all STM32F1 devices:
* If the system tick timer interrupt is enabled during the Stop mode
* debug (DBG_STOP bit set in the DBGMCU_CR register ), it will wakeup
* the system from Stop mode.
* Workaround: To debug the Stop mode, disable the system tick timer
* interrupt.
* Refer to errata sheet of these devices for more details.
* Note: On all STM32F1 devices:
* If the system tick timer interrupt is enabled during the Stop mode
* debug (DBG_STOP bit set in the DBGMCU_CR register ), it will wakeup
* the system from Stop mode.
* Workaround: To debug the Stop mode, disable the system tick timer
* interrupt.
* Refer to errata sheet of these devices for more details.
* @retval None
*/
void HAL_DBGMCU_EnableDBGStopMode(void)
{
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
}
/**
* @brief Disable the Debug Module during STOP mode
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval None
*/
void HAL_DBGMCU_DisableDBGStopMode(void)
{
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
}
/**
* @brief Enable the Debug Module during STANDBY mode
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval None
*/
void HAL_DBGMCU_EnableDBGStandbyMode(void)
{
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
}
/**
* @brief Disable the Debug Module during STANDBY mode
* Note: On devices STM32F10xx8 and STM32F10xxB,
* STM32F101xC/D/E and STM32F103xC/D/E,
* STM32F101xF/G and STM32F103xF/G
* STM32F10xx4 and STM32F10xx6
* Debug registers DBGMCU_IDCODE and DBGMCU_CR are accessible only in
* debug mode (not accessible by the user software in normal mode).
* Refer to errata sheet of these devices for more details.
* @retval None
*/
void HAL_DBGMCU_DisableDBGStandbyMode(void)
{
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_cortex.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief CORTEX HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the CORTEX:
* + Initialization and de-initialization functions
* + Peripheral Control functions
*
* @verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
*** How to configure Interrupts using Cortex HAL driver ***
===========================================================
[..]
This section provide functions allowing to configure the NVIC interrupts (IRQ).
The Cortex-M3 exceptions are managed by CMSIS functions.
(#) Configure the NVIC Priority Grouping using HAL_NVIC_SetPriorityGrouping()
function according to the following table.
The table below gives the allowed values of the pre-emption priority and subpriority according
to the Priority Grouping configuration performed by HAL_NVIC_SetPriorityGrouping() function.
==========================================================================================================================
NVIC_PriorityGroup | NVIC_IRQChannelPreemptionPriority | NVIC_IRQChannelSubPriority | Description
==========================================================================================================================
NVIC_PRIORITYGROUP_0 | 0 | 0-15 | 0 bits for pre-emption priority
| | | 4 bits for subpriority
--------------------------------------------------------------------------------------------------------------------------
NVIC_PRIORITYGROUP_1 | 0-1 | 0-7 | 1 bits for pre-emption priority
| | | 3 bits for subpriority
--------------------------------------------------------------------------------------------------------------------------
NVIC_PRIORITYGROUP_2 | 0-3 | 0-3 | 2 bits for pre-emption priority
| | | 2 bits for subpriority
--------------------------------------------------------------------------------------------------------------------------
NVIC_PRIORITYGROUP_3 | 0-7 | 0-1 | 3 bits for pre-emption priority
| | | 1 bits for subpriority
--------------------------------------------------------------------------------------------------------------------------
NVIC_PRIORITYGROUP_4 | 0-15 | 0 | 4 bits for pre-emption priority
| | | 0 bits for subpriority
==========================================================================================================================
(#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority()
(#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ()
-@- When the NVIC_PRIORITYGROUP_0 is selected, IRQ pre-emption is no more possible.
The pending IRQ priority will be managed only by the sub priority.
-@- IRQ priority order (sorted by highest to lowest priority):
(+@) Lowest pre-emption priority
(+@) Lowest sub priority
(+@) Lowest hardware priority (IRQ number)
[..]
*** How to configure Systick using Cortex HAL driver ***
========================================================
[..]
Setup SysTick Timer for 1 msec interrupts.
(+) The HAL_SYSTICK_Config()function calls the SysTick_Config() function which
is a CMSIS function that:
(++) Configures the SysTick Reload register with value passed as function parameter.
(++) Configures the SysTick IRQ priority to the lowest value (0x0F).
(++) Resets the SysTick Counter register.
(++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK).
(++) Enables the SysTick Interrupt.
(++) Starts the SysTick Counter.
(+) You can change the SysTick Clock source to be HCLK_Div8 by calling the function
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
HAL_SYSTICK_Config() function call.
(+) You can change the SysTick IRQ priority by calling the
HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function
call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function.
(+) To adjust the SysTick time base, use the following formula:
Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s)
(++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function
(++) Reload Value should not exceed 0xFFFFFF
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup CORTEX CORTEX
* @brief CORTEX HAL module driver
* @{
*/
#ifdef HAL_CORTEX_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup CORTEX_Exported_Functions CORTEX Exported Functions
* @{
*/
/** @defgroup CORTEX_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
==============================================================================
##### Initialization and de-initialization functions #####
==============================================================================
[..]
This section provide the Cortex HAL driver functions allowing to configure Interrupts
Systick functionalities
@endverbatim
* @{
*/
/**
* @brief Sets the priority grouping field (pre-emption priority and subpriority)
* using the required unlock sequence.
* @param PriorityGroup: The priority grouping bits length.
* This parameter can be one of the following values:
* @arg NVIC_PRIORITYGROUP_0: 0 bits for pre-emption priority
* 4 bits for subpriority
* @arg NVIC_PRIORITYGROUP_1: 1 bits for pre-emption priority
* 3 bits for subpriority
* @arg NVIC_PRIORITYGROUP_2: 2 bits for pre-emption priority
* 2 bits for subpriority
* @arg NVIC_PRIORITYGROUP_3: 3 bits for pre-emption priority
* 1 bits for subpriority
* @arg NVIC_PRIORITYGROUP_4: 4 bits for pre-emption priority
* 0 bits for subpriority
* @note When the NVIC_PriorityGroup_0 is selected, IRQ pre-emption is no more possible.
* The pending IRQ priority will be managed only by the subpriority.
* @retval None
*/
void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
{
/* Check the parameters */
assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
/* Set the PRIGROUP[10:8] bits according to the PriorityGroup parameter value */
NVIC_SetPriorityGrouping(PriorityGroup);
}
/**
* @brief Sets the priority of an interrupt.
* @param IRQn: External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @param PreemptPriority: The pre-emption priority for the IRQn channel.
* This parameter can be a value between 0 and 15
* A lower priority value indicates a higher priority
* @param SubPriority: the subpriority level for the IRQ channel.
* This parameter can be a value between 0 and 15
* A lower priority value indicates a higher priority.
* @retval None
*/
void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
{
uint32_t prioritygroup = 0x00;
/* Check the parameters */
assert_param(IS_NVIC_SUB_PRIORITY(SubPriority));
assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
prioritygroup = NVIC_GetPriorityGrouping();
NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
}
/**
* @brief Enables a device specific interrupt in the NVIC interrupt controller.
* @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig()
* function should be called before.
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval None
*/
void HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
{
/* Check the parameters */
assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
/* Enable interrupt */
NVIC_EnableIRQ(IRQn);
}
/**
* @brief Disables a device specific interrupt in the NVIC interrupt controller.
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval None
*/
void HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
{
/* Check the parameters */
assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
/* Disable interrupt */
NVIC_DisableIRQ(IRQn);
}
/**
* @brief Initiates a system reset request to reset the MCU.
* @retval None
*/
void HAL_NVIC_SystemReset(void)
{
/* System Reset */
NVIC_SystemReset();
}
/**
* @brief Initializes the System Timer and its interrupt, and starts the System Tick Timer.
* Counter is in free running mode to generate periodic interrupts.
* @param TicksNumb: Specifies the ticks Number of ticks between two interrupts.
* @retval status: - 0 Function succeeded.
* - 1 Function failed.
*/
uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb)
{
return SysTick_Config(TicksNumb);
}
/**
* @}
*/
/** @defgroup CORTEX_Exported_Functions_Group2 Peripheral Control functions
* @brief Cortex control functions
*
@verbatim
==============================================================================
##### Peripheral Control functions #####
==============================================================================
[..]
This subsection provides a set of functions allowing to control the CORTEX
(NVIC, SYSTICK, MPU) functionalities.
@endverbatim
* @{
*/
#if (__MPU_PRESENT == 1)
/**
* @brief Initializes and configures the Region and the memory to be protected.
* @param MPU_Init: Pointer to a MPU_Region_InitTypeDef structure that contains
* the initialization and configuration information.
* @retval None
*/
void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_Init)
{
/* Check the parameters */
assert_param(IS_MPU_REGION_NUMBER(MPU_Init->Number));
assert_param(IS_MPU_REGION_ENABLE(MPU_Init->Enable));
/* Set the Region number */
MPU->RNR = MPU_Init->Number;
if ((MPU_Init->Enable) != RESET)
{
/* Check the parameters */
assert_param(IS_MPU_INSTRUCTION_ACCESS(MPU_Init->DisableExec));
assert_param(IS_MPU_REGION_PERMISSION_ATTRIBUTE(MPU_Init->AccessPermission));
assert_param(IS_MPU_TEX_LEVEL(MPU_Init->TypeExtField));
assert_param(IS_MPU_ACCESS_SHAREABLE(MPU_Init->IsShareable));
assert_param(IS_MPU_ACCESS_CACHEABLE(MPU_Init->IsCacheable));
assert_param(IS_MPU_ACCESS_BUFFERABLE(MPU_Init->IsBufferable));
assert_param(IS_MPU_SUB_REGION_DISABLE(MPU_Init->SubRegionDisable));
assert_param(IS_MPU_REGION_SIZE(MPU_Init->Size));
MPU->RBAR = MPU_Init->BaseAddress;
MPU->RASR = ((uint32_t)MPU_Init->DisableExec << MPU_RASR_XN_Pos) |
((uint32_t)MPU_Init->AccessPermission << MPU_RASR_AP_Pos) |
((uint32_t)MPU_Init->TypeExtField << MPU_RASR_TEX_Pos) |
((uint32_t)MPU_Init->IsShareable << MPU_RASR_S_Pos) |
((uint32_t)MPU_Init->IsCacheable << MPU_RASR_C_Pos) |
((uint32_t)MPU_Init->IsBufferable << MPU_RASR_B_Pos) |
((uint32_t)MPU_Init->SubRegionDisable << MPU_RASR_SRD_Pos) |
((uint32_t)MPU_Init->Size << MPU_RASR_SIZE_Pos) |
((uint32_t)MPU_Init->Enable << MPU_RASR_ENABLE_Pos);
}
else
{
MPU->RBAR = 0x00;
MPU->RASR = 0x00;
}
}
#endif /* __MPU_PRESENT */
/**
* @brief Gets the priority grouping field from the NVIC Interrupt Controller.
* @retval Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field)
*/
uint32_t HAL_NVIC_GetPriorityGrouping(void)
{
/* Get the PRIGROUP[10:8] field value */
return NVIC_GetPriorityGrouping();
}
/**
* @brief Gets the priority of an interrupt.
* @param IRQn: External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @param PriorityGroup: the priority grouping bits length.
* This parameter can be one of the following values:
* @arg NVIC_PRIORITYGROUP_0: 0 bits for pre-emption priority
* 4 bits for subpriority
* @arg NVIC_PRIORITYGROUP_1: 1 bits for pre-emption priority
* 3 bits for subpriority
* @arg NVIC_PRIORITYGROUP_2: 2 bits for pre-emption priority
* 2 bits for subpriority
* @arg NVIC_PRIORITYGROUP_3: 3 bits for pre-emption priority
* 1 bits for subpriority
* @arg NVIC_PRIORITYGROUP_4: 4 bits for pre-emption priority
* 0 bits for subpriority
* @param pPreemptPriority: Pointer on the Preemptive priority value (starting from 0).
* @param pSubPriority: Pointer on the Subpriority value (starting from 0).
* @retval None
*/
void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
{
/* Check the parameters */
assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
/* Get priority for Cortex-M system or device specific interrupts */
NVIC_DecodePriority(NVIC_GetPriority(IRQn), PriorityGroup, pPreemptPriority, pSubPriority);
}
/**
* @brief Sets Pending bit of an external interrupt.
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval None
*/
void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)
{
/* Set interrupt pending */
NVIC_SetPendingIRQ(IRQn);
}
/**
* @brief Gets Pending Interrupt (reads the pending register in the NVIC
* and returns the pending bit for the specified interrupt).
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval status: - 0 Interrupt status is not pending.
* - 1 Interrupt status is pending.
*/
uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)
{
/* Return 1 if pending else 0 */
return NVIC_GetPendingIRQ(IRQn);
}
/**
* @brief Clears the pending bit of an external interrupt.
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval None
*/
void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)
{
/* Clear pending interrupt */
NVIC_ClearPendingIRQ(IRQn);
}
/**
* @brief Gets active interrupt ( reads the active register in NVIC and returns the active bit).
* @param IRQn External interrupt number
* This parameter can be an enumerator of IRQn_Type enumeration
* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f10xxx.h))
* @retval status: - 0 Interrupt status is not pending.
* - 1 Interrupt status is pending.
*/
uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn)
{
/* Return 1 if active else 0 */
return NVIC_GetActive(IRQn);
}
/**
* @brief Configures the SysTick clock source.
* @param CLKSource: specifies the SysTick clock source.
* This parameter can be one of the following values:
* @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
* @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source.
* @retval None
*/
void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)
{
/* Check the parameters */
assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource));
if (CLKSource == SYSTICK_CLKSOURCE_HCLK)
{
SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
}
else
{
SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK;
}
}
/**
* @brief This function handles SYSTICK interrupt request.
* @retval None
*/
void HAL_SYSTICK_IRQHandler(void)
{
HAL_SYSTICK_Callback();
}
/**
* @brief SYSTICK callback.
* @retval None
*/
__weak void HAL_SYSTICK_Callback(void)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_SYSTICK_Callback could be implemented in the user file
*/
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_CORTEX_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_dma.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief DMA HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the Direct Memory Access (DMA) peripheral:
* + Initialization and de-initialization functions
* + IO operation functions
* + Peripheral State and errors functions
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
(#) Enable and configure the peripheral to be connected to the DMA Channel
(except for internal SRAM / FLASH memories: no initialization is
necessary) please refer to Reference manual for connection between peripherals
and DMA requests.
(#) For a given Channel, program the required configuration through the following parameters:
Transfer Direction, Source and Destination data formats,
Circular or Normal mode, Channel Priority level, Source and Destination Increment mode,
using HAL_DMA_Init() function.
(#) Use HAL_DMA_GetState() function to return the DMA state and HAL_DMA_GetError() in case of error
detection.
(#) Use HAL_DMA_Abort() function to abort the current transfer
-@- In Memory-to-Memory transfer mode, Circular mode is not allowed.
*** Polling mode IO operation ***
=================================
[..]
(+) Use HAL_DMA_Start() to start DMA transfer after the configuration of Source
address and destination address and the Length of data to be transferred
(+) Use HAL_DMA_PollForTransfer() to poll for the end of current transfer, in this
case a fixed Timeout can be configured by User depending from his application.
*** Interrupt mode IO operation ***
===================================
[..]
(+) Configure the DMA interrupt priority using HAL_NVIC_SetPriority()
(+) Enable the DMA IRQ handler using HAL_NVIC_EnableIRQ()
(+) Use HAL_DMA_Start_IT() to start DMA transfer after the configuration of
Source address and destination address and the Length of data to be transferred.
In this case the DMA interrupt is configured
(+) Use HAL_DMAy_Channelx_IRQHandler() called under DMA_IRQHandler() Interrupt subroutine
(+) At the end of data transfer HAL_DMA_IRQHandler() function is executed and user can
add his own function by customization of function pointer XferCpltCallback and
XferErrorCallback (i.e a member of DMA handle structure).
*** DMA HAL driver macros list ***
=============================================
[..]
Below the list of most used macros in DMA HAL driver.
(+) __HAL_DMA_ENABLE: Enable the specified DMA Channel.
(+) __HAL_DMA_DISABLE: Disable the specified DMA Channel.
(+) __HAL_DMA_GET_FLAG: Get the DMA Channel pending flags.
(+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Channel pending flags.
(+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Channel interrupts.
(+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Channel interrupts.
(+) __HAL_DMA_GET_IT_SOURCE: Check whether the specified DMA Channel interrupt has occurred or not.
[..]
(@) You can refer to the DMA HAL driver header file for more useful macros
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup DMA DMA
* @brief DMA HAL module driver
* @{
*/
#ifdef HAL_DMA_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup DMA_Private_Constants DMA Private Constants
* @{
*/
#define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000) /* 1s */
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup DMA_Private_Functions DMA Private Functions
* @{
*/
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
/**
* @}
*/
/* Exported functions ---------------------------------------------------------*/
/** @defgroup DMA_Exported_Functions DMA Exported Functions
* @{
*/
/** @defgroup DMA_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and de-initialization functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..]
This section provides functions allowing to initialize the DMA Channel source
and destination addresses, incrementation and data sizes, transfer direction,
circular/normal mode selection, memory-to-memory mode selection and Channel priority value.
[..]
The HAL_DMA_Init() function follows the DMA configuration procedures as described in
reference manual.
@endverbatim
* @{
*/
/**
* @brief Initializes the DMA according to the specified
* parameters in the DMA_InitTypeDef and create the associated handle.
* @param hdma: Pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma)
{
uint32_t tmp = 0;
/* Check the DMA handle allocation */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
assert_param(IS_DMA_DIRECTION(hdma->Init.Direction));
assert_param(IS_DMA_PERIPHERAL_INC_STATE(hdma->Init.PeriphInc));
assert_param(IS_DMA_MEMORY_INC_STATE(hdma->Init.MemInc));
assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(hdma->Init.PeriphDataAlignment));
assert_param(IS_DMA_MEMORY_DATA_SIZE(hdma->Init.MemDataAlignment));
assert_param(IS_DMA_MODE(hdma->Init.Mode));
assert_param(IS_DMA_PRIORITY(hdma->Init.Priority));
if(hdma->State == HAL_DMA_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hdma->Lock = HAL_UNLOCKED;
}
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Get the CR register value */
tmp = hdma->Instance->CCR;
/* Clear PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR bits */
tmp &= ((uint32_t)~(DMA_CCR_PL | DMA_CCR_MSIZE | DMA_CCR_PSIZE | \
DMA_CCR_MINC | DMA_CCR_PINC | DMA_CCR_CIRC | \
DMA_CCR_DIR));
/* Prepare the DMA Channel configuration */
tmp |= hdma->Init.Direction |
hdma->Init.PeriphInc | hdma->Init.MemInc |
hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
hdma->Init.Mode | hdma->Init.Priority;
/* Write to DMA Channel CR register */
hdma->Instance->CCR = tmp;
/* Initialise the error code */
hdma->ErrorCode = HAL_DMA_ERROR_NONE;
/* Initialize the DMA state*/
hdma->State = HAL_DMA_STATE_READY;
return HAL_OK;
}
/**
* @brief DeInitializes the DMA peripheral
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
{
/* Check the DMA handle allocation */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
/* Check the DMA peripheral state */
if(hdma->State == HAL_DMA_STATE_BUSY)
{
return HAL_ERROR;
}
/* Disable the selected DMA Channelx */
__HAL_DMA_DISABLE(hdma);
/* Reset DMA Channel control register */
hdma->Instance->CCR = 0;
/* Reset DMA Channel Number of Data to Transfer register */
hdma->Instance->CNDTR = 0;
/* Reset DMA Channel peripheral address register */
hdma->Instance->CPAR = 0;
/* Reset DMA Channel memory address register */
hdma->Instance->CMAR = 0;
/* Clear all flags */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* Initialize the error code */
hdma->ErrorCode = HAL_DMA_ERROR_NONE;
/* Initialize the DMA state */
hdma->State = HAL_DMA_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hdma);
return HAL_OK;
}
/**
* @}
*/
/** @defgroup DMA_Exported_Functions_Group2 Input and Output operation functions
* @brief I/O operation functions
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Configure the source, destination address and data length and Start DMA transfer
(+) Configure the source, destination address and data length and
Start DMA transfer with interrupt
(+) Abort DMA transfer
(+) Poll for transfer complete
(+) Handle DMA interrupt request
@endverbatim
* @{
*/
/**
* @brief Starts the DMA Transfer.
* @param hdma : pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @param SrcAddress: The source memory Buffer address
* @param DstAddress: The destination memory Buffer address
* @param DataLength: The length of data to be transferred from source to destination
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Start(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
/* Process locked */
__HAL_LOCK(hdma);
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Check the parameters */
assert_param(IS_DMA_BUFFER_SIZE(DataLength));
/* Disable the peripheral */
__HAL_DMA_DISABLE(hdma);
/* Configure the source, destination address and the data length */
DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
/* Enable the Peripheral */
__HAL_DMA_ENABLE(hdma);
return HAL_OK;
}
/**
* @brief Start the DMA Transfer with interrupt enabled.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @param SrcAddress: The source memory Buffer address
* @param DstAddress: The destination memory Buffer address
* @param DataLength: The length of data to be transferred from source to destination
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
/* Process locked */
__HAL_LOCK(hdma);
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Check the parameters */
assert_param(IS_DMA_BUFFER_SIZE(DataLength));
/* Disable the peripheral */
__HAL_DMA_DISABLE(hdma);
/* Configure the source, destination address and the data length */
DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
/* Enable the transfer complete interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
/* Enable the Half transfer complete interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT);
/* Enable the transfer Error interrupt */
__HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE);
/* Enable the Peripheral */
__HAL_DMA_ENABLE(hdma);
return HAL_OK;
}
/**
* @brief Aborts the DMA Transfer.
* @param hdma : pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
*
* @note After disabling a DMA Channel, a check for wait until the DMA Channel is
* effectively disabled is added. If a Channel is disabled
* while a data transfer is ongoing, the current data will be transferred
* and the Channel will be effectively disabled only after the transfer of
* this single data is finished.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma)
{
uint32_t tickstart = 0x00;
/* Disable the channel */
__HAL_DMA_DISABLE(hdma);
/* Get tick */
tickstart = HAL_GetTick();
/* Check if the DMA Channel is effectively disabled */
while((hdma->Instance->CCR & DMA_CCR_EN) != 0)
{
/* Check for the Timeout */
if((HAL_GetTick() - tickstart) > HAL_TIMEOUT_DMA_ABORT)
{
/* Update error code */
SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TIMEOUT);
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
return HAL_TIMEOUT;
}
}
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
return HAL_OK;
}
/**
* @brief Polling for transfer complete.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @param CompleteLevel: Specifies the DMA level complete.
* @param Timeout: Timeout duration.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, uint32_t CompleteLevel, uint32_t Timeout)
{
uint32_t temp;
uint32_t tickstart = 0x00;
/* Get the level transfer complete flag */
if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
{
/* Transfer Complete flag */
temp = __HAL_DMA_GET_TC_FLAG_INDEX(hdma);
}
else
{
/* Half Transfer Complete flag */
temp = __HAL_DMA_GET_HT_FLAG_INDEX(hdma);
}
/* Get tick */
tickstart = HAL_GetTick();
while(__HAL_DMA_GET_FLAG(hdma, temp) == RESET)
{
if((__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET))
{
/* Clear the transfer error flags */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
/* Update error code */
SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TE);
/* Change the DMA state */
hdma->State= HAL_DMA_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
return HAL_ERROR;
}
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
{
/* Update error code */
SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TIMEOUT);
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
return HAL_TIMEOUT;
}
}
}
if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
{
/* Clear the transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
/* The selected Channelx EN bit is cleared (DMA is disabled and
all transfers are complete) */
hdma->State = HAL_DMA_STATE_READY;
}
else
{
/* Clear the half transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* The selected Channelx EN bit is cleared (DMA is disabled and
all transfers of half buffer are complete) */
hdma->State = HAL_DMA_STATE_READY_HALF;
}
/* Process unlocked */
__HAL_UNLOCK(hdma);
return HAL_OK;
}
/**
* @brief Handles DMA interrupt request.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @retval None
*/
void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
{
/* Transfer Error Interrupt management ***************************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
{
/* Disable the transfer error interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE);
/* Clear the transfer error flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
/* Update error code */
SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TE);
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if (hdma->XferErrorCallback != NULL)
{
/* Transfer error callback */
hdma->XferErrorCallback(hdma);
}
}
}
/* Half Transfer Complete Interrupt management ******************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
{
/* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0)
{
/* Disable the half transfer interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT);
}
/* Clear the half transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_READY_HALF;
if(hdma->XferHalfCpltCallback != NULL)
{
/* Half transfer callback */
hdma->XferHalfCpltCallback(hdma);
}
}
}
/* Transfer Complete Interrupt management ***********************************/
if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)) != RESET)
{
if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
{
if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0)
{
/* Disable the transfer complete interrupt */
__HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC);
}
/* Clear the transfer complete flag */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
/* Update error code */
SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_NONE);
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferCpltCallback != NULL)
{
/* Transfer complete callback */
hdma->XferCpltCallback(hdma);
}
}
}
}
/**
* @}
*/
/** @defgroup DMA_Exported_Functions_Group3 Peripheral State functions
* @brief Peripheral State functions
*
@verbatim
===============================================================================
##### State and Errors functions #####
===============================================================================
[..]
This subsection provides functions allowing to
(+) Check the DMA state
(+) Get error code
@endverbatim
* @{
*/
/**
* @brief Returns the DMA state.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @retval HAL state
*/
HAL_DMA_StateTypeDef HAL_DMA_GetState(DMA_HandleTypeDef *hdma)
{
return hdma->State;
}
/**
* @brief Return the DMA error code
* @param hdma : pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @retval DMA Error Code
*/
uint32_t HAL_DMA_GetError(DMA_HandleTypeDef *hdma)
{
return hdma->ErrorCode;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup DMA_Private_Functions DMA Private Functions
* @{
*/
/**
* @brief Sets the DMA Transfer parameter.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Channel.
* @param SrcAddress: The source memory Buffer address
* @param DstAddress: The destination memory Buffer address
* @param DataLength: The length of data to be transferred from source to destination
* @retval HAL status
*/
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
/* Configure DMA Channel data length */
hdma->Instance->CNDTR = DataLength;
/* Peripheral to Memory */
if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
{
/* Configure DMA Channel destination address */
hdma->Instance->CPAR = DstAddress;
/* Configure DMA Channel source address */
hdma->Instance->CMAR = SrcAddress;
}
/* Memory to Peripheral */
else
{
/* Configure DMA Channel source address */
hdma->Instance->CPAR = SrcAddress;
/* Configure DMA Channel destination address */
hdma->Instance->CMAR = DstAddress;
}
}
/**
* @}
*/
#endif /* HAL_DMA_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_flash.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief FLASH HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the internal FLASH memory:
* + Program operations functions
* + Memory Control functions
* + Peripheral State functions
*
@verbatim
==============================================================================
##### FLASH peripheral features #####
==============================================================================
[..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
to the Flash memory. It implements the erase and program Flash memory operations
and the read and write protection mechanisms.
[..] The Flash memory interface accelerates code execution with a system of instruction
prefetch.
[..] The FLASH main features are:
(+) Flash memory read operations
(+) Flash memory program/erase operations
(+) Read / write protections
(+) Prefetch on I-Code
(+) Option Bytes programming
##### How to use this driver #####
==============================================================================
[..]
This driver provides functions and macros to configure and program the FLASH
memory of all STM32F1xx devices.
(#) FLASH Memory I/O Programming functions: this group includes all needed
functions to erase and program the main memory:
(++) Lock and Unlock the FLASH interface
(++) Erase function: Erase page, erase all pages
(++) Program functions: half word, word and doubleword
(#) FLASH Option Bytes Programming functions: this group includes all needed
functions to manage the Option Bytes:
(++) Lock and Unlock the Option Bytes
(++) Set/Reset the write protection
(++) Set the Read protection Level
(++) Program the user Option Bytes
(++) Launch the Option Bytes loader
(++) Erase Option Bytes
(++) Program the data Option Bytes
(++) Get the Write protection.
(++) Get the user option bytes.
(#) Interrupts and flags management functions : this group
includes all needed functions to:
(++) Handle FLASH interrupts
(++) Wait for last FLASH operation according to its status
(++) Get error flag status
[..] In addition to these function, this driver includes a set of macros allowing
to handle the following operations:
(+) Set/Get the latency
(+) Enable/Disable the prefetch buffer
(+) Enable/Disable the half cycle access
(+) Enable/Disable the FLASH interrupts
(+) Monitor the FLASH flags status
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
#ifdef HAL_FLASH_MODULE_ENABLED
/** @defgroup FLASH FLASH
* @brief FLASH HAL module driver
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup FLASH_Private_Constants FLASH Private Constants
* @{
*/
/**
* @}
*/
/* Private macro ---------------------------- ---------------------------------*/
/** @defgroup FLASH_Private_Macros FLASH Private Macros
* @{
*/
/**
* @}
*/
/* Private variables ---------------------------------------------------------*/
/** @defgroup FLASH_Private_Variables FLASH Private Variables
* @{
*/
/* Variables used for Erase pages under interruption*/
FLASH_ProcessTypeDef pFlash;
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup FLASH_Private_Functions FLASH Private Functions
* @{
*/
static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
static void FLASH_SetErrorCode(void);
/**
* @}
*/
/* Exported functions ---------------------------------------------------------*/
/** @defgroup FLASH_Exported_Functions FLASH Exported Functions
* @{
*/
/** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
* @brief Programming operation functions
*
@verbatim
@endverbatim
* @{
*/
/**
* @brief Program halfword, word or double word at a specified address
* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
*
* @note If an erase and a program operations are requested simultaneously,
* the erase operation is performed before the program one.
*
* @note FLASH should be previously erased before new programmation (only exception to this
* is when 0x0000 is programmed)
*
* @param TypeProgram: Indicate the way to program at a specified address.
* This parameter can be a value of @ref FLASH_Type_Program
* @param Address: Specifies the address to be programmed.
* @param Data: Specifies the data to be programmed
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
{
HAL_StatusTypeDef status = HAL_ERROR;
uint8_t index = 0;
uint8_t nbiterations = 0;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Check the parameters */
assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
#if defined(FLASH_BANK2_END)
if(Address <= FLASH_BANK1_END)
{
#endif /* FLASH_BANK2_END */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
#if defined(FLASH_BANK2_END)
}
else
{
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* FLASH_BANK2_END */
if(status == HAL_OK)
{
if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
{
/* Program halfword (16-bit) at a specified address. */
nbiterations = 1;
}
else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
{
/* Program word (32-bit = 2*16-bit) at a specified address. */
nbiterations = 2;
}
else
{
/* Program double word (64-bit = 4*16-bit) at a specified address. */
nbiterations = 4;
}
for (index = 0; index < nbiterations; index++)
{
FLASH_Program_HalfWord((Address + (2*index)), (uint16_t)(Data >> (16*index)));
#if defined(FLASH_BANK2_END)
if(Address <= FLASH_BANK1_END)
{
#endif /* FLASH_BANK2_END */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the program operation is completed, disable the PG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
#if defined(FLASH_BANK2_END)
}
else
{
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the program operation is completed, disable the PG Bit */
CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
}
#endif /* FLASH_BANK2_END */
/* In case of error, stop programation procedure */
if (status != HAL_OK)
{
break;
}
}
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Program halfword, word or double word at a specified address with interrupt enabled.
* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
*
* @note If an erase and a program operations are requested simultaneously,
* the erase operation is performed before the program one.
*
* @param TypeProgram: Indicate the way to program at a specified address.
* This parameter can be a value of @ref FLASH_Type_Program
* @param Address: Specifies the address to be programmed.
* @param Data: Specifies the data to be programmed
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
{
HAL_StatusTypeDef status = HAL_OK;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Check the parameters */
assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
#if defined(FLASH_BANK2_END)
/* If procedure already ongoing, reject the next one */
if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
{
return HAL_ERROR;
}
if(Address <= FLASH_BANK1_END)
{
/* Enable End of FLASH Operation and Error source interrupts */
__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1);
}else
{
/* Enable End of FLASH Operation and Error source interrupts */
__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
}
#else
/* Enable End of FLASH Operation and Error source interrupts */
__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
#endif /* FLASH_BANK2_END */
pFlash.Address = Address;
pFlash.Data = Data;
if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
{
pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
/*Program halfword (16-bit) at a specified address.*/
pFlash.DataRemaining = 1;
}
else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
{
pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
/*Program word (32-bit : 2*16-bit) at a specified address.*/
pFlash.DataRemaining = 2;
}
else
{
pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
/*Program double word (64-bit : 4*16-bit) at a specified address.*/
pFlash.DataRemaining = 4;
}
/*Program halfword (16-bit) at a specified address.*/
FLASH_Program_HalfWord(Address, (uint16_t)Data);
return status;
}
/**
* @brief This function handles FLASH interrupt request.
* @retval None
*/
void HAL_FLASH_IRQHandler(void)
{
uint32_t addresstmp = 0;
/* Check FLASH operation error flags */
#if defined(FLASH_BANK2_END)
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK1) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK1) || \
(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2)))
#else
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
#endif /* FLASH_BANK2_END */
{
/*return the faulty address*/
addresstmp = pFlash.Address;
/* Reset address */
pFlash.Address = 0xFFFFFFFF;
/*Save the Error code*/
FLASH_SetErrorCode();
/* FLASH error interrupt user callback */
HAL_FLASH_OperationErrorCallback(addresstmp);
/* Stop the procedure ongoing*/
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
}
/* Check FLASH End of Operation flag */
#if defined(FLASH_BANK2_END)
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK1))
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK1);
#else
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
#endif /* FLASH_BANK2_END */
/* Process can continue only if no error detected */
if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
{
if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
{
/* Nb of pages to erased can be decreased */
pFlash.DataRemaining--;
/* Check if there are still pages to erase*/
if(pFlash.DataRemaining != 0)
{
addresstmp = pFlash.Address;
/*Indicate user which sector has been erased*/
HAL_FLASH_EndOfOperationCallback(addresstmp);
/*Increment sector number*/
addresstmp = pFlash.Address + FLASH_PAGE_SIZE;
pFlash.Address = addresstmp;
/* If the erase operation is completed, disable the PER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
FLASH_PageErase(addresstmp);
}
else
{
/*No more pages to Erase, user callback can be called.*/
/*Reset Sector and stop Erase pages procedure*/
pFlash.Address = addresstmp = 0xFFFFFFFF;
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
/* FLASH EOP interrupt user callback */
HAL_FLASH_EndOfOperationCallback(addresstmp);
}
}
else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
{
/* Operation is completed, disable the MER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
#if defined(FLASH_BANK2_END)
/* Stop Mass Erase procedure if no pending mass erase on other bank */
if (HAL_IS_BIT_CLR(FLASH->CR2, FLASH_CR2_MER))
{
#endif /* FLASH_BANK2_END */
/* MassErase ended. Return the selected bank*/
/* FLASH EOP interrupt user callback */
HAL_FLASH_EndOfOperationCallback(0);
/* Stop Mass Erase procedure*/
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
}
#if defined(FLASH_BANK2_END)
}
#endif /* FLASH_BANK2_END */
else
{
/* Nb of 16-bit data to program can be decreased */
pFlash.DataRemaining--;
/* Check if there are still 16-bit data to program */
if(pFlash.DataRemaining != 0)
{
/* Increment address to 16-bit */
pFlash.Address += 2;
addresstmp = pFlash.Address;
/* Shift to have next 16-bit data */
pFlash.Data = (pFlash.Data >> 16);
/* Operation is completed, disable the PG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
/*Program halfword (16-bit) at a specified address.*/
FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
}
else
{
/*Program ended. Return the selected address*/
/* FLASH EOP interrupt user callback */
if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address);
}
else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address - 2);
}
else
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address - 6);
}
/* Reset Address and stop Program procedure*/
pFlash.Address = 0xFFFFFFFF;
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
}
}
}
}
#if defined(FLASH_BANK2_END)
/* Check FLASH End of Operation flag */
if(__HAL_FLASH_GET_FLAG( FLASH_FLAG_EOP_BANK2))
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
/* Process can continue only if no error detected */
if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
{
if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
{
/* Nb of pages to erased can be decreased */
pFlash.DataRemaining--;
/* Check if there are still pages to erase*/
if(pFlash.DataRemaining != 0)
{
/* Indicate user which page address has been erased*/
HAL_FLASH_EndOfOperationCallback(pFlash.Address);
/* Increment page address to next page */
pFlash.Address += FLASH_PAGE_SIZE;
addresstmp = pFlash.Address;
/* Operation is completed, disable the PER Bit */
CLEAR_BIT(FLASH->CR2, FLASH_CR2_PER);
FLASH_PageErase(addresstmp);
}
else
{
/*No more pages to Erase*/
/*Reset Address and stop Erase pages procedure*/
pFlash.Address = 0xFFFFFFFF;
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
/* FLASH EOP interrupt user callback */
HAL_FLASH_EndOfOperationCallback(pFlash.Address);
}
}
else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
{
/* Operation is completed, disable the MER Bit */
CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_MER))
{
/* MassErase ended. Return the selected bank*/
/* FLASH EOP interrupt user callback */
HAL_FLASH_EndOfOperationCallback(0);
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
}
}
else
{
/* Nb of 16-bit data to program can be decreased */
pFlash.DataRemaining--;
/* Check if there are still 16-bit data to program */
if(pFlash.DataRemaining != 0)
{
/* Increment address to 16-bit */
pFlash.Address += 2;
addresstmp = pFlash.Address;
/* Shift to have next 16-bit data */
pFlash.Data = (pFlash.Data >> 16);
/* Operation is completed, disable the PG Bit */
CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
/*Program halfword (16-bit) at a specified address.*/
FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
}
else
{
/*Program ended. Return the selected address*/
/* FLASH EOP interrupt user callback */
if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address);
}
else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address-2);
}
else
{
HAL_FLASH_EndOfOperationCallback(pFlash.Address-6);
}
/* Reset Address and stop Program procedure*/
pFlash.Address = 0xFFFFFFFF;
pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
}
}
}
}
#endif
if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
{
#if defined(FLASH_BANK2_END)
/* Operation is completed, disable the PG, PER and MER Bits for both bank */
CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
CLEAR_BIT(FLASH->CR2, (FLASH_CR2_PG | FLASH_CR2_PER | FLASH_CR2_MER));
/* Disable End of FLASH Operation and Error source interrupts for both banks */
__HAL_FLASH_DISABLE_IT(FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1 | FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
#else
/* Operation is completed, disable the PG, PER and MER Bits */
CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
/* Disable End of FLASH Operation and Error source interrupts */
__HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
#endif /* FLASH_BANK2_END */
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
}
}
/**
* @brief FLASH end of operation interrupt callback
* @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
* - Mass Erase: No return value expected
* - Pages Erase: Address of the page which has been erased
* (if 0xFFFFFFFF, it means that all the selected pages have been erased)
* - Program: Address which was selected for data program
* @retval none
*/
__weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(ReturnValue);
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
*/
}
/**
* @brief FLASH operation error interrupt callback
* @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
* - Mass Erase: No return value expected
* - Pages Erase: Address of the page which returned an error
* - Program: Address which was selected for data program
* @retval none
*/
__weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(ReturnValue);
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_FLASH_OperationErrorCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
* @brief management functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the FLASH
memory operations.
@endverbatim
* @{
*/
/**
* @brief Unlock the FLASH control register access
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Unlock(void)
{
if (HAL_IS_BIT_SET(FLASH->CR, FLASH_CR_LOCK))
{
/* Authorize the FLASH Registers access */
WRITE_REG(FLASH->KEYR, FLASH_KEY1);
WRITE_REG(FLASH->KEYR, FLASH_KEY2);
}
else
{
return HAL_ERROR;
}
#if defined(FLASH_BANK2_END)
if (HAL_IS_BIT_SET(FLASH->CR2, FLASH_CR2_LOCK))
{
/* Authorize the FLASH BANK2 Registers access */
WRITE_REG(FLASH->KEYR2, FLASH_KEY1);
WRITE_REG(FLASH->KEYR2, FLASH_KEY2);
}
else
{
return HAL_ERROR;
}
#endif /* FLASH_BANK2_END */
return HAL_OK;
}
/**
* @brief Locks the FLASH control register access
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Lock(void)
{
/* Set the LOCK Bit to lock the FLASH Registers access */
SET_BIT(FLASH->CR, FLASH_CR_LOCK);
#if defined(FLASH_BANK2_END)
/* Set the LOCK Bit to lock the FLASH BANK2 Registers access */
SET_BIT(FLASH->CR2, FLASH_CR2_LOCK);
#endif /* FLASH_BANK2_END */
return HAL_OK;
}
/**
* @brief Unlock the FLASH Option Control Registers access.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
{
if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_OPTWRE))
{
/* Authorizes the Option Byte register programming */
WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
}
else
{
return HAL_ERROR;
}
return HAL_OK;
}
/**
* @brief Lock the FLASH Option Control Registers access.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
{
/* Clear the OPTWRE Bit to lock the FLASH Option Byte Registers access */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTWRE);
return HAL_OK;
}
/**
* @brief Launch the option byte loading.
* @note This function will reset automatically the MCU.
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
{
/* Initiates a system reset request to launch the option byte loading */
HAL_NVIC_SystemReset();
return HAL_OK;
}
/**
* @}
*/
/** @defgroup FLASH_Exported_Functions_Group3 Peripheral State functions
* @brief Peripheral State functions
*
@verbatim
===============================================================================
##### Peripheral State functions #####
===============================================================================
[..]
This subsection permit to get in run-time the status of the FLASH peripheral.
@endverbatim
* @{
*/
/**
* @brief Get the specific FLASH error flag.
* @retval FLASH_ErrorCode: The returned value can be:
* @ref FLASH_Error_Codes
*/
uint32_t HAL_FLASH_GetError(void)
{
return pFlash.ErrorCode;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup FLASH_Private_Functions
* @{
*/
/**
* @brief Program a half-word (16-bit) at a specified address.
* @param Address: specifies the address to be programmed.
* @param Data: specifies the data to be programmed.
* @retval None
*/
static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
#if defined(FLASH_BANK2_END)
if(Address <= FLASH_BANK1_END)
{
#endif /* FLASH_BANK2_END */
/* Proceed to program the new data */
SET_BIT(FLASH->CR, FLASH_CR_PG);
#if defined(FLASH_BANK2_END)
}
else
{
/* Proceed to program the new data */
SET_BIT(FLASH->CR2, FLASH_CR2_PG);
}
#endif /* FLASH_BANK2_END */
/* Write data in the address */
*(__IO uint16_t*)Address = Data;
}
/**
* @brief Wait for a FLASH operation to complete.
* @param Timeout: maximum flash operation timeout
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
{
/* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
Even if the FLASH operation fails, the BUSY flag will be reset and an error
flag will be set */
uint32_t tickstart = HAL_GetTick();
while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
{
if (Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
{
return HAL_TIMEOUT;
}
}
}
/* Check FLASH End of Operation flag */
if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
}
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||
__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR) ||
__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
{
/*Save the error code*/
FLASH_SetErrorCode();
return HAL_ERROR;
}
/* If there is no error flag set */
return HAL_OK;
}
#if defined(FLASH_BANK2_END)
/**
* @brief Wait for a FLASH BANK2 operation to complete.
* @param Timeout: maximum flash operation timeout
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef FLASH_WaitForLastOperationBank2(uint32_t Timeout)
{
/* Wait for the FLASH BANK2 operation to complete by polling on BUSY flag to be reset.
Even if the FLASH BANK2 operation fails, the BUSY flag will be reset and an error
flag will be set */
uint32_t tickstart = HAL_GetTick();
while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY_BANK2))
{
if (Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
{
return HAL_TIMEOUT;
}
}
}
/* Check FLASH End of Operation flag */
if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK2))
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
}
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
{
/*Save the error code*/
FLASH_SetErrorCode();
return HAL_ERROR;
}
/* If there is an error flag set */
return HAL_OK;
}
#endif /* FLASH_BANK2_END */
/**
* @brief Set the specific FLASH error flag.
* @retval None
*/
static void FLASH_SetErrorCode(void)
{
#if defined(FLASH_BANK2_END)
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2))
#else
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
#endif /* FLASH_BANK2_END */
{
pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
}
#if defined(FLASH_BANK2_END)
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
#else
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
#endif /* FLASH_BANK2_END */
{
pFlash.ErrorCode |= HAL_FLASH_ERROR_PROG;
}
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR))
{
pFlash.ErrorCode |= HAL_FLASH_ERROR_OPTV;
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPTVERR);
}
/* Clear FLASH error pending bits */
#if defined(FLASH_BANK2_END)
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_WRPERR_BANK2 | FLASH_FLAG_PGERR | FLASH_FLAG_PGERR_BANK2);
#else
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
#endif /* FLASH_BANK2_END */
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_FLASH_MODULE_ENABLED */
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_gpio.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief GPIO HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the General Purpose Input/Output (GPIO) peripheral:
* + Initialization and de-initialization functions
* + IO operation functions
*
@verbatim
==============================================================================
##### GPIO Peripheral features #####
==============================================================================
[..]
Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each
port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software
in several modes:
(+) Input mode
(+) Analog mode
(+) Output mode
(+) Alternate function mode
(+) External interrupt/event lines
[..]
During and just after reset, the alternate functions and external interrupt
lines are not active and the I/O ports are configured in input floating mode.
[..]
All GPIO pins have weak internal pull-up and pull-down resistors, which can be
activated or not.
[..]
In Output or Alternate mode, each IO can be configured on open-drain or push-pull
type and the IO speed can be selected depending on the VDD value.
[..]
All ports have external interrupt/event capability. To use external interrupt
lines, the port must be configured in input mode. All available GPIO pins are
connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
[..]
The external interrupt/event controller consists of up to 20 edge detectors in connectivity
line devices, or 19 edge detectors in other devices for generating event/interrupt requests.
Each input line can be independently configured to select the type (event or interrupt) and
the corresponding trigger event (rising or falling or both). Each line can also masked
independently. A pending register maintains the status line of the interrupt requests
##### How to use this driver #####
==============================================================================
[..]
(#) Enable the GPIO APB2 clock using the following function : __HAL_RCC_GPIOx_CLK_ENABLE().
(#) Configure the GPIO pin(s) using HAL_GPIO_Init().
(++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
(++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
structure.
(++) In case of Output or alternate function mode selection: the speed is
configured through "Speed" member from GPIO_InitTypeDef structure
(++) Analog mode is required when a pin is to be used as ADC channel
or DAC output.
(++) In case of external interrupt/event selection the "Mode" member from
GPIO_InitTypeDef structure select the type (interrupt or event) and
the corresponding trigger event (rising or falling or both).
(#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
HAL_NVIC_EnableIRQ().
(#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
(#) To set/reset the level of a pin configured in output mode use
HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
(#) To lock pin configuration until next reset use HAL_GPIO_LockPin().
(#) During and just after reset, the alternate functions are not
active and the GPIO pins are configured in input floating mode (except JTAG
pins).
(#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
(PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
priority over the GPIO function.
(#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
general purpose PD0 and PD1, respectively, when the HSE oscillator is off.
The HSE has priority over the GPIO function.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup GPIO GPIO
* @brief GPIO HAL module driver
* @{
*/
#ifdef HAL_GPIO_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup GPIO_Private_Constants GPIO Private Constants
* @{
*/
#define GPIO_MODE ((uint32_t)0x00000003)
#define EXTI_MODE ((uint32_t)0x10000000)
#define GPIO_MODE_IT ((uint32_t)0x00010000)
#define GPIO_MODE_EVT ((uint32_t)0x00020000)
#define RISING_EDGE ((uint32_t)0x00100000)
#define FALLING_EDGE ((uint32_t)0x00200000)
#define GPIO_OUTPUT_TYPE ((uint32_t)0x00000010)
#define GPIO_NUMBER ((uint32_t)16)
/* Definitions for bit manipulation of CRL and CRH register */
#define GPIO_CR_MODE_INPUT ((uint32_t)0x00000000) /*!< 00: Input mode (reset state) */
#define GPIO_CR_CNF_ANALOG ((uint32_t)0x00000000) /*!< 00: Analog mode */
#define GPIO_CR_CNF_INPUT_FLOATING ((uint32_t)0x00000004) /*!< 01: Floating input (reset state) */
#define GPIO_CR_CNF_INPUT_PU_PD ((uint32_t)0x00000008) /*!< 10: Input with pull-up / pull-down */
#define GPIO_CR_CNF_GP_OUTPUT_PP ((uint32_t)0x00000000) /*!< 00: General purpose output push-pull */
#define GPIO_CR_CNF_GP_OUTPUT_OD ((uint32_t)0x00000004) /*!< 01: General purpose output Open-drain */
#define GPIO_CR_CNF_AF_OUTPUT_PP ((uint32_t)0x00000008) /*!< 10: Alternate function output Push-pull */
#define GPIO_CR_CNF_AF_OUTPUT_OD ((uint32_t)0x0000000C) /*!< 11: Alternate function output Open-drain */
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup GPIO_Exported_Functions GPIO Exported Functions
* @{
*/
/** @defgroup GPIO_Exported_Functions_Group1 Initialization and deinitialization functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
##### Initialization and deinitialization functions #####
===============================================================================
[..]
This section provides functions allowing to initialize and de-initialize the GPIOs
to be ready for use.
@endverbatim
* @{
*/
/**
* @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
* the configuration information for the specified GPIO peripheral.
* @retval None
*/
void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
{
uint32_t position;
uint32_t ioposition = 0x00;
uint32_t iocurrent = 0x00;
uint32_t temp = 0x00;
uint32_t config = 0x00;
__IO uint32_t *configregister; /* Store the address of CRL or CRH register based on pin number */
uint32_t registeroffset = 0; /* offset used during computation of CNF and MODE bits placement inside CRL or CRH register */
/* Check the parameters */
assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
/* Configure the port pins */
for (position = 0; position < GPIO_NUMBER; position++)
{
/* Get the IO position */
ioposition = ((uint32_t)0x01) << position;
/* Get the current IO position */
iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
if (iocurrent == ioposition)
{
/* Check the Alternate function parameters */
assert_param(IS_GPIO_AF_INSTANCE(GPIOx));
/* Based on the required mode, filling config variable with MODEy[1:0] and CNFy[3:2] corresponding bits */
switch (GPIO_Init->Mode)
{
/* If we are configuring the pin in OUTPUT push-pull mode */
case GPIO_MODE_OUTPUT_PP:
/* Check the GPIO speed parameter */
assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
config = GPIO_Init->Speed + GPIO_CR_CNF_GP_OUTPUT_PP;
break;
/* If we are configuring the pin in OUTPUT open-drain mode */
case GPIO_MODE_OUTPUT_OD:
/* Check the GPIO speed parameter */
assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
config = GPIO_Init->Speed + GPIO_CR_CNF_GP_OUTPUT_OD;
break;
/* If we are configuring the pin in ALTERNATE FUNCTION push-pull mode */
case GPIO_MODE_AF_PP:
/* Check the GPIO speed parameter */
assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
config = GPIO_Init->Speed + GPIO_CR_CNF_AF_OUTPUT_PP;
break;
/* If we are configuring the pin in ALTERNATE FUNCTION open-drain mode */
case GPIO_MODE_AF_OD:
/* Check the GPIO speed parameter */
assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
config = GPIO_Init->Speed + GPIO_CR_CNF_AF_OUTPUT_OD;
break;
/* If we are configuring the pin in INPUT (also applicable to EVENT and IT mode) */
case GPIO_MODE_INPUT:
case GPIO_MODE_IT_RISING:
case GPIO_MODE_IT_FALLING:
case GPIO_MODE_IT_RISING_FALLING:
case GPIO_MODE_EVT_RISING:
case GPIO_MODE_EVT_FALLING:
case GPIO_MODE_EVT_RISING_FALLING:
/* Check the GPIO pull parameter */
assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
if(GPIO_Init->Pull == GPIO_NOPULL)
{
config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_FLOATING;
}
else if(GPIO_Init->Pull == GPIO_PULLUP)
{
config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_PU_PD;
/* Set the corresponding ODR bit */
GPIOx->BSRR = ioposition;
}
else /* GPIO_PULLDOWN */
{
config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_PU_PD;
/* Reset the corresponding ODR bit */
GPIOx->BRR = ioposition;
}
break;
/* If we are configuring the pin in INPUT analog mode */
case GPIO_MODE_ANALOG:
config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_ANALOG;
break;
/* Parameters are checked with assert_param */
default:
break;
}
/* Check if the current bit belongs to first half or last half of the pin count number
in order to address CRH or CRL register*/
configregister = (iocurrent < GPIO_PIN_8) ? &GPIOx->CRL : &GPIOx->CRH;
registeroffset = (iocurrent < GPIO_PIN_8) ? (position << 2) : ((position - 8) << 2);
/* Apply the new configuration of the pin to the register */
MODIFY_REG((*configregister), ((GPIO_CRL_MODE0 | GPIO_CRL_CNF0) << registeroffset ), (config << registeroffset));
/*--------------------- EXTI Mode Configuration ------------------------*/
/* Configure the External Interrupt or event for the current IO */
if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
{
/* Enable AFIO Clock */
__HAL_RCC_AFIO_CLK_ENABLE();
temp = AFIO->EXTICR[position >> 2];
CLEAR_BIT(temp, ((uint32_t)0x0F) << (4 * (position & 0x03)));
SET_BIT(temp, (GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03)));
AFIO->EXTICR[position >> 2] = temp;
/* Configure the interrupt mask */
if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
{
SET_BIT(EXTI->IMR, iocurrent);
}
else
{
CLEAR_BIT(EXTI->IMR, iocurrent);
}
/* Configure the event mask */
if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
{
SET_BIT(EXTI->EMR, iocurrent);
}
else
{
CLEAR_BIT(EXTI->EMR, iocurrent);
}
/* Enable or disable the rising trigger */
if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
{
SET_BIT(EXTI->RTSR, iocurrent);
}
else
{
CLEAR_BIT(EXTI->RTSR, iocurrent);
}
/* Enable or disable the falling trigger */
if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
{
SET_BIT(EXTI->FTSR, iocurrent);
}
else
{
CLEAR_BIT(EXTI->FTSR, iocurrent);
}
}
}
}
}
/**
* @brief De-initializes the GPIOx peripheral registers to their default reset values.
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Pin: specifies the port bit to be written.
* This parameter can be one of GPIO_PIN_x where x can be (0..15).
* @retval None
*/
void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
{
uint32_t position = 0x00;
uint32_t iocurrent = 0x00;
uint32_t tmp = 0x00;
__IO uint32_t *configregister; /* Store the address of CRL or CRH register based on pin number */
uint32_t registeroffset = 0;
/* Check the parameters */
assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
assert_param(IS_GPIO_PIN(GPIO_Pin));
/* Configure the port pins */
while ((GPIO_Pin >> position) != 0)
{
/* Get current io position */
iocurrent = (GPIO_Pin) & ((uint32_t)1 << position);
if (iocurrent)
{
/*------------------------- GPIO Mode Configuration --------------------*/
/* Check if the current bit belongs to first half or last half of the pin count number
in order to address CRH or CRL register */
configregister = (iocurrent < GPIO_PIN_8) ? &GPIOx->CRL : &GPIOx->CRH;
registeroffset = (iocurrent < GPIO_PIN_8) ? (position << 2) : ((position - 8) << 2);
/* CRL/CRH default value is floating input(0x04) shifted to correct position */
MODIFY_REG(*configregister, ((GPIO_CRL_MODE0 | GPIO_CRL_CNF0) << registeroffset ), GPIO_CRL_CNF0_0 << registeroffset);
/* ODR default value is 0 */
CLEAR_BIT(GPIOx->ODR, iocurrent);
/*------------------------- EXTI Mode Configuration --------------------*/
/* Clear the External Interrupt or Event for the current IO */
tmp = AFIO->EXTICR[position >> 2];
tmp &= (((uint32_t)0x0F) << (4 * (position & 0x03)));
if(tmp == (GPIO_GET_INDEX(GPIOx) << (4 * (position & 0x03))))
{
tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
CLEAR_BIT(AFIO->EXTICR[position >> 2], tmp);
/* Clear EXTI line configuration */
CLEAR_BIT(EXTI->IMR, (uint32_t)iocurrent);
CLEAR_BIT(EXTI->EMR, (uint32_t)iocurrent);
/* Clear Rising Falling edge configuration */
CLEAR_BIT(EXTI->RTSR, (uint32_t)iocurrent);
CLEAR_BIT(EXTI->FTSR, (uint32_t)iocurrent);
}
}
position++;
}
}
/**
* @}
*/
/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions
* @brief GPIO Read and Write
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to manage the GPIOs.
@endverbatim
* @{
*/
/**
* @brief Reads the specified input port pin.
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Pin: specifies the port bit to read.
* This parameter can be GPIO_PIN_x where x can be (0..15).
* @retval The input port pin value.
*/
GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
GPIO_PinState bitstatus;
/* Check the parameters */
assert_param(IS_GPIO_PIN(GPIO_Pin));
if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
{
bitstatus = GPIO_PIN_SET;
}
else
{
bitstatus = GPIO_PIN_RESET;
}
return bitstatus;
}
/**
* @brief Sets or clears the selected data port bit.
*
* @note This function uses GPIOx_BSRR register to allow atomic read/modify
* accesses. In this way, there is no risk of an IRQ occurring between
* the read and the modify access.
*
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Pin: specifies the port bit to be written.
* This parameter can be one of GPIO_PIN_x where x can be (0..15).
* @param PinState: specifies the value to be written to the selected bit.
* This parameter can be one of the GPIO_PinState enum values:
* @arg GPIO_BIT_RESET: to clear the port pin
* @arg GPIO_BIT_SET: to set the port pin
* @retval None
*/
void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
{
/* Check the parameters */
assert_param(IS_GPIO_PIN(GPIO_Pin));
assert_param(IS_GPIO_PIN_ACTION(PinState));
if(PinState != GPIO_PIN_RESET)
{
GPIOx->BSRR = GPIO_Pin;
}
else
{
GPIOx->BSRR = (uint32_t)GPIO_Pin << 16;
}
}
/**
* @brief Toggles the specified GPIO pin
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Pin: Specifies the pins to be toggled.
* @retval None
*/
void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
/* Check the parameters */
assert_param(IS_GPIO_PIN(GPIO_Pin));
GPIOx->ODR ^= GPIO_Pin;
}
/**
* @brief Locks GPIO Pins configuration registers.
* @note The locking mechanism allows the IO configuration to be frozen. When the LOCK sequence
* has been applied on a port bit, it is no longer possible to modify the value of the port bit until
* the next reset.
* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral
* @param GPIO_Pin: specifies the port bit to be locked.
* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
* @retval None
*/
HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
__IO uint32_t tmp = GPIO_LCKR_LCKK;
/* Check the parameters */
assert_param(IS_GPIO_LOCK_INSTANCE(GPIOx));
assert_param(IS_GPIO_PIN(GPIO_Pin));
/* Apply lock key write sequence */
SET_BIT(tmp, GPIO_Pin);
/* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
GPIOx->LCKR = tmp;
/* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */
GPIOx->LCKR = GPIO_Pin;
/* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
GPIOx->LCKR = tmp;
/* Read LCKK bit*/
tmp = GPIOx->LCKR;
if((uint32_t)(GPIOx->LCKR & GPIO_LCKR_LCKK))
{
return HAL_OK;
}
else
{
return HAL_ERROR;
}
}
/**
* @brief This function handles EXTI interrupt request.
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
{
/* EXTI line interrupt detected */
if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
{
__HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
HAL_GPIO_EXTI_Callback(GPIO_Pin);
}
}
/**
* @brief EXTI line detection callback
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(GPIO_Pin);
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_GPIO_EXTI_Callback could be implemented in the user file
*/
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_GPIO_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_gpio_ex.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief GPIO Extension HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the General Purpose Input/Output (GPIO) extension peripheral.
* + Extended features functions
*
@verbatim
==============================================================================
##### GPIO Peripheral extension features #####
==============================================================================
[..] GPIO module on STM32F1 family, manage also the AFIO register:
(+) Possibility to use the EVENTOUT Cortex feature
##### How to use this driver #####
==============================================================================
[..] This driver provides functions to use EVENTOUT Cortex feature
(#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
(#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
(#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup GPIOEx GPIOEx
* @brief GPIO HAL module driver
* @{
*/
#ifdef HAL_GPIO_MODULE_ENABLED
/** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions
* @{
*/
/** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions
* @brief Extended features functions
*
@verbatim
==============================================================================
##### Extended features functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
(+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
(+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
@endverbatim
* @{
*/
/**
* @brief Configures the port and pin on which the EVENTOUT Cortex signal will be connected.
* @param GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal.
* This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT.
* @param GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal.
* This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN.
* @retval None
*/
void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource)
{
/* Verify the parameters */
assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource));
assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource));
/* Apply the new configuration */
MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT)|(AFIO_EVCR_PIN), (GPIO_PortSource)|(GPIO_PinSource));
}
/**
* @brief Enables the Event Output.
* @retval None
*/
void HAL_GPIOEx_EnableEventout(void)
{
SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
}
/**
* @brief Disables the Event Output.
* @retval None
*/
void HAL_GPIOEx_DisableEventout(void)
{
CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_GPIO_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_pwr.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief PWR HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the Power Controller (PWR) peripheral:
* + Initialization/de-initialization functions
* + Peripheral Control functions
*
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @defgroup PWR PWR
* @brief PWR HAL module driver
* @{
*/
#ifdef HAL_PWR_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup PWR_Private_Constants PWR Private Constants
* @{
*/
/** @defgroup PWR_PVD_Mode_Mask PWR PVD Mode Mask
* @{
*/
#define PVD_MODE_IT ((uint32_t)0x00010000)
#define PVD_MODE_EVT ((uint32_t)0x00020000)
#define PVD_RISING_EDGE ((uint32_t)0x00000001)
#define PVD_FALLING_EDGE ((uint32_t)0x00000002)
/**
* @}
*/
/** @defgroup PWR_register_alias_address PWR Register alias address
* @{
*/
/* ------------- PWR registers bit address in the alias region ---------------*/
#define PWR_OFFSET (PWR_BASE - PERIPH_BASE)
#define PWR_CR_OFFSET 0x00
#define PWR_CSR_OFFSET 0x04
#define PWR_CR_OFFSET_BB (PWR_OFFSET + PWR_CR_OFFSET)
#define PWR_CSR_OFFSET_BB (PWR_OFFSET + PWR_CSR_OFFSET)
/**
* @}
*/
/** @defgroup PWR_CR_register_alias PWR CR Register alias address
* @{
*/
/* --- CR Register ---*/
/* Alias word address of LPSDSR bit */
#define LPSDSR_BIT_NUMBER POSITION_VAL(PWR_CR_LPDS)
#define CR_LPSDSR_BB ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (LPSDSR_BIT_NUMBER * 4)))
/* Alias word address of DBP bit */
#define DBP_BIT_NUMBER POSITION_VAL(PWR_CR_DBP)
#define CR_DBP_BB ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (DBP_BIT_NUMBER * 4)))
/* Alias word address of PVDE bit */
#define PVDE_BIT_NUMBER POSITION_VAL(PWR_CR_PVDE)
#define CR_PVDE_BB ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (PVDE_BIT_NUMBER * 4)))
/**
* @}
*/
/** @defgroup PWR_CSR_register_alias PWR CSR Register alias address
* @{
*/
/* --- CSR Register ---*/
/* Alias word address of EWUP1 bit */
#define CSR_EWUP_BB(VAL) ((uint32_t)(PERIPH_BB_BASE + (PWR_CSR_OFFSET_BB * 32) + (POSITION_VAL(VAL) * 4)))
/**
* @}
*/
/**
* @}
*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup PWR_Private_Functions PWR Private Functions
* brief WFE cortex command overloaded for HAL_PWR_EnterSTOPMode usage only (see Workaround section)
* @{
*/
static void PWR_OverloadWfe(void);
/* Private functions ---------------------------------------------------------*/
__NOINLINE
static void PWR_OverloadWfe(void)
{
__asm volatile( "wfe" );
__asm volatile( "nop" );
}
/**
* @}
*/
/** @defgroup PWR_Exported_Functions PWR Exported Functions
* @{
*/
/** @defgroup PWR_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and de-initialization functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..]
After reset, the backup domain (RTC registers, RTC backup data
registers) is protected against possible unwanted
write accesses.
To enable access to the RTC Domain and RTC registers, proceed as follows:
(+) Enable the Power Controller (PWR) APB1 interface clock using the
__HAL_RCC_PWR_CLK_ENABLE() macro.
(+) Enable access to RTC domain using the HAL_PWR_EnableBkUpAccess() function.
@endverbatim
* @{
*/
/**
* @brief Deinitializes the PWR peripheral registers to their default reset values.
* @retval None
*/
void HAL_PWR_DeInit(void)
{
__HAL_RCC_PWR_FORCE_RESET();
__HAL_RCC_PWR_RELEASE_RESET();
}
/**
* @brief Enables access to the backup domain (RTC registers, RTC
* backup data registers ).
* @note If the HSE divided by 128 is used as the RTC clock, the
* Backup Domain Access should be kept enabled.
* @retval None
*/
void HAL_PWR_EnableBkUpAccess(void)
{
/* Enable access to RTC and backup registers */
*(__IO uint32_t *) CR_DBP_BB = (uint32_t)ENABLE;
}
/**
* @brief Disables access to the backup domain (RTC registers, RTC
* backup data registers).
* @note If the HSE divided by 128 is used as the RTC clock, the
* Backup Domain Access should be kept enabled.
* @retval None
*/
void HAL_PWR_DisableBkUpAccess(void)
{
/* Disable access to RTC and backup registers */
*(__IO uint32_t *) CR_DBP_BB = (uint32_t)DISABLE;
}
/**
* @}
*/
/** @defgroup PWR_Exported_Functions_Group2 Peripheral Control functions
* @brief Low Power modes configuration functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
*** PVD configuration ***
=========================
[..]
(+) The PVD is used to monitor the VDD power supply by comparing it to a
threshold selected by the PVD Level (PLS[2:0] bits in the PWR_CR).
(+) A PVDO flag is available to indicate if VDD/VDDA is higher or lower
than the PVD threshold. This event is internally connected to the EXTI
line16 and can generate an interrupt if enabled. This is done through
__HAL_PVD_EXTI_ENABLE_IT() macro.
(+) The PVD is stopped in Standby mode.
*** WakeUp pin configuration ***
================================
[..]
(+) WakeUp pin is used to wake up the system from Standby mode. This pin is
forced in input pull-down configuration and is active on rising edges.
(+) There is one WakeUp pin:
WakeUp Pin 1 on PA.00.
[..]
*** Low Power modes configuration ***
=====================================
[..]
The device features 3 low-power modes:
(+) Sleep mode: CPU clock off, all peripherals including Cortex-M3 core peripherals like
NVIC, SysTick, etc. are kept running
(+) Stop mode: All clocks are stopped
(+) Standby mode: 1.8V domain powered off
*** Sleep mode ***
==================
[..]
(+) Entry:
The Sleep mode is entered by using the HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFx)
functions with
(++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
(++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
(+) Exit:
(++) WFI entry mode, Any peripheral interrupt acknowledged by the nested vectored interrupt
controller (NVIC) can wake up the device from Sleep mode.
(++) WFE entry mode, Any wakeup event can wake up the device from Sleep mode.
(+++) Any peripheral interrupt w/o NVIC configuration & SEVONPEND bit set in the Cortex (HAL_PWR_EnableSEVOnPend)
(+++) Any EXTI Line (Internal or External) configured in Event mode
*** Stop mode ***
=================
[..]
The Stop mode is based on the Cortex-M3 deepsleep mode combined with peripheral
clock gating. The voltage regulator can be configured either in normal or low-power mode.
In Stop mode, all clocks in the 1.8 V domain are stopped, the PLL, the HSI and the HSE RC
oscillators are disabled. SRAM and register contents are preserved.
In Stop mode, all I/O pins keep the same state as in Run mode.
(+) Entry:
The Stop mode is entered using the HAL_PWR_EnterSTOPMode(PWR_REGULATOR_VALUE, PWR_SLEEPENTRY_WFx )
function with:
(++) PWR_REGULATOR_VALUE= PWR_MAINREGULATOR_ON: Main regulator ON.
(++) PWR_REGULATOR_VALUE= PWR_LOWPOWERREGULATOR_ON: Low Power regulator ON.
(++) PWR_SLEEPENTRY_WFx= PWR_SLEEPENTRY_WFI: enter STOP mode with WFI instruction
(++) PWR_SLEEPENTRY_WFx= PWR_SLEEPENTRY_WFE: enter STOP mode with WFE instruction
(+) Exit:
(++) WFI entry mode, Any EXTI Line (Internal or External) configured in Interrupt mode with NVIC configured
(++) WFE entry mode, Any EXTI Line (Internal or External) configured in Event mode.
*** Standby mode ***
====================
[..]
The Standby mode allows to achieve the lowest power consumption. It is based on the
Cortex-M3 deepsleep mode, with the voltage regulator disabled. The 1.8 V domain is
consequently powered off. The PLL, the HSI oscillator and the HSE oscillator are also
switched off. SRAM and register contents are lost except for registers in the Backup domain
and Standby circuitry
(+) Entry:
(++) The Standby mode is entered using the HAL_PWR_EnterSTANDBYMode() function.
(+) Exit:
(++) WKUP pin rising edge, RTC alarm event rising edge, external Reset in
NRSTpin, IWDG Reset
*** Auto-wakeup (AWU) from low-power mode ***
=============================================
[..]
(+) The MCU can be woken up from low-power mode by an RTC Alarm event,
without depending on an external interrupt (Auto-wakeup mode).
(+) RTC auto-wakeup (AWU) from the Stop and Standby modes
(++) To wake up from the Stop mode with an RTC alarm event, it is necessary to
configure the RTC to generate the RTC alarm using the HAL_RTC_SetAlarm_IT() function.
*** PWR Workarounds linked to Silicon Limitation ***
====================================================
[..]
Below the list of all silicon limitations known on STM32F1xx prouct.
(#)Workarounds Implemented inside PWR HAL Driver
(##)Debugging Stop mode with WFE entry - overloaded the WFE by an internal function
@endverbatim
* @{
*/
/**
* @brief Configures the voltage threshold detected by the Power Voltage Detector(PVD).
* @param sConfigPVD: pointer to an PWR_PVDTypeDef structure that contains the configuration
* information for the PVD.
* @note Refer to the electrical characteristics of your device datasheet for
* more details about the voltage threshold corresponding to each
* detection level.
* @retval None
*/
void HAL_PWR_ConfigPVD(PWR_PVDTypeDef *sConfigPVD)
{
/* Check the parameters */
assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel));
assert_param(IS_PWR_PVD_MODE(sConfigPVD->Mode));
/* Set PLS[7:5] bits according to PVDLevel value */
MODIFY_REG(PWR->CR, PWR_CR_PLS, sConfigPVD->PVDLevel);
/* Clear any previous config. Keep it clear if no event or IT mode is selected */
__HAL_PWR_PVD_EXTI_DISABLE_EVENT();
__HAL_PWR_PVD_EXTI_DISABLE_IT();
__HAL_PWR_PVD_EXTI_DISABLE_FALLING_EDGE();
__HAL_PWR_PVD_EXTI_DISABLE_RISING_EDGE();
/* Configure interrupt mode */
if((sConfigPVD->Mode & PVD_MODE_IT) == PVD_MODE_IT)
{
__HAL_PWR_PVD_EXTI_ENABLE_IT();
}
/* Configure event mode */
if((sConfigPVD->Mode & PVD_MODE_EVT) == PVD_MODE_EVT)
{
__HAL_PWR_PVD_EXTI_ENABLE_EVENT();
}
/* Configure the edge */
if((sConfigPVD->Mode & PVD_RISING_EDGE) == PVD_RISING_EDGE)
{
__HAL_PWR_PVD_EXTI_ENABLE_RISING_EDGE();
}
if((sConfigPVD->Mode & PVD_FALLING_EDGE) == PVD_FALLING_EDGE)
{
__HAL_PWR_PVD_EXTI_ENABLE_FALLING_EDGE();
}
}
/**
* @brief Enables the Power Voltage Detector(PVD).
* @retval None
*/
void HAL_PWR_EnablePVD(void)
{
/* Enable the power voltage detector */
*(__IO uint32_t *) CR_PVDE_BB = (uint32_t)ENABLE;
}
/**
* @brief Disables the Power Voltage Detector(PVD).
* @retval None
*/
void HAL_PWR_DisablePVD(void)
{
/* Disable the power voltage detector */
*(__IO uint32_t *) CR_PVDE_BB = (uint32_t)DISABLE;
}
/**
* @brief Enables the WakeUp PINx functionality.
* @param WakeUpPinx: Specifies the Power Wake-Up pin to enable.
* This parameter can be one of the following values:
* @arg PWR_WAKEUP_PIN1
* @retval None
*/
void HAL_PWR_EnableWakeUpPin(uint32_t WakeUpPinx)
{
/* Check the parameter */
assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));
/* Enable the EWUPx pin */
*(__IO uint32_t *) CSR_EWUP_BB(WakeUpPinx) = (uint32_t)ENABLE;
}
/**
* @brief Disables the WakeUp PINx functionality.
* @param WakeUpPinx: Specifies the Power Wake-Up pin to disable.
* This parameter can be one of the following values:
* @arg PWR_WAKEUP_PIN1
* @retval None
*/
void HAL_PWR_DisableWakeUpPin(uint32_t WakeUpPinx)
{
/* Check the parameter */
assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));
/* Disable the EWUPx pin */
*(__IO uint32_t *) CSR_EWUP_BB(WakeUpPinx) = (uint32_t)DISABLE;
}
/**
* @brief Enters Sleep mode.
* @note In Sleep mode, all I/O pins keep the same state as in Run mode.
* @param Regulator: Regulator state as no effect in SLEEP mode - allows to support portability from legacy software
* @param SLEEPEntry: Specifies if SLEEP mode is entered with WFI or WFE instruction.
* When WFI entry is used, tick interrupt have to be disabled if not desired as
* the interrupt wake up source.
* This parameter can be one of the following values:
* @arg PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
* @arg PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
* @retval None
*/
void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)
{
/* Check the parameters */
/* No check on Regulator because parameter not used in SLEEP mode */
assert_param(IS_PWR_SLEEP_ENTRY(SLEEPEntry));
/* Clear SLEEPDEEP bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
/* Select SLEEP mode entry -------------------------------------------------*/
if(SLEEPEntry == PWR_SLEEPENTRY_WFI)
{
/* Request Wait For Interrupt */
__WFI();
}
else
{
/* Request Wait For Event */
__SEV();
__WFE();
__WFE();
}
}
/**
* @brief Enters Stop mode.
* @note In Stop mode, all I/O pins keep the same state as in Run mode.
* @note When exiting Stop mode by using an interrupt or a wakeup event,
* HSI RC oscillator is selected as system clock.
* @note When the voltage regulator operates in low power mode, an additional
* startup delay is incurred when waking up from Stop mode.
* By keeping the internal regulator ON during Stop mode, the consumption
* is higher although the startup time is reduced.
* @param Regulator: Specifies the regulator state in Stop mode.
* This parameter can be one of the following values:
* @arg PWR_MAINREGULATOR_ON: Stop mode with regulator ON
* @arg PWR_LOWPOWERREGULATOR_ON: Stop mode with low power regulator ON
* @param STOPEntry: Specifies if Stop mode in entered with WFI or WFE instruction.
* This parameter can be one of the following values:
* @arg PWR_STOPENTRY_WFI: Enter Stop mode with WFI instruction
* @arg PWR_STOPENTRY_WFE: Enter Stop mode with WFE instruction
* @retval None
*/
void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry)
{
/* Check the parameters */
assert_param(IS_PWR_REGULATOR(Regulator));
assert_param(IS_PWR_STOP_ENTRY(STOPEntry));
/* Clear PDDS bit in PWR register to specify entering in STOP mode when CPU enter in Deepsleep */
CLEAR_BIT(PWR->CR, PWR_CR_PDDS);
/* Select the voltage regulator mode by setting LPDS bit in PWR register according to Regulator parameter value */
MODIFY_REG(PWR->CR, PWR_CR_LPDS, Regulator);
/* Set SLEEPDEEP bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
/* Select Stop mode entry --------------------------------------------------*/
if(STOPEntry == PWR_STOPENTRY_WFI)
{
/* Request Wait For Interrupt */
__WFI();
}
else
{
/* Request Wait For Event */
__SEV();
PWR_OverloadWfe(); /* WFE redefine locally */
PWR_OverloadWfe(); /* WFE redefine locally */
}
/* Reset SLEEPDEEP bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
}
/**
* @brief Enters Standby mode.
* @note In Standby mode, all I/O pins are high impedance except for:
* - Reset pad (still available)
* - TAMPER pin if configured for tamper or calibration out.
* - WKUP pin (PA0) if enabled.
* @retval None
*/
void HAL_PWR_EnterSTANDBYMode(void)
{
/* Select Standby mode */
SET_BIT(PWR->CR, PWR_CR_PDDS);
/* Set SLEEPDEEP bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
/* This option is used to ensure that store operations are completed */
#if defined ( __CC_ARM)
__force_stores();
#endif
/* Request Wait For Interrupt */
__WFI();
}
/**
* @brief Indicates Sleep-On-Exit when returning from Handler mode to Thread mode.
* @note Set SLEEPONEXIT bit of SCR register. When this bit is set, the processor
* re-enters SLEEP mode when an interruption handling is over.
* Setting this bit is useful when the processor is expected to run only on
* interruptions handling.
* @retval None
*/
void HAL_PWR_EnableSleepOnExit(void)
{
/* Set SLEEPONEXIT bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}
/**
* @brief Disables Sleep-On-Exit feature when returning from Handler mode to Thread mode.
* @note Clears SLEEPONEXIT bit of SCR register. When this bit is set, the processor
* re-enters SLEEP mode when an interruption handling is over.
* @retval None
*/
void HAL_PWR_DisableSleepOnExit(void)
{
/* Clear SLEEPONEXIT bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}
/**
* @brief Enables CORTEX M3 SEVONPEND bit.
* @note Sets SEVONPEND bit of SCR register. When this bit is set, this causes
* WFE to wake up when an interrupt moves from inactive to pended.
* @retval None
*/
void HAL_PWR_EnableSEVOnPend(void)
{
/* Set SEVONPEND bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}
/**
* @brief Disables CORTEX M3 SEVONPEND bit.
* @note Clears SEVONPEND bit of SCR register. When this bit is set, this causes
* WFE to wake up when an interrupt moves from inactive to pended.
* @retval None
*/
void HAL_PWR_DisableSEVOnPend(void)
{
/* Clear SEVONPEND bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}
/**
* @brief This function handles the PWR PVD interrupt request.
* @note This API should be called under the PVD_IRQHandler().
* @retval None
*/
void HAL_PWR_PVD_IRQHandler(void)
{
/* Check PWR exti flag */
if(__HAL_PWR_PVD_EXTI_GET_FLAG() != RESET)
{
/* PWR PVD interrupt user callback */
HAL_PWR_PVDCallback();
/* Clear PWR Exti pending bit */
__HAL_PWR_PVD_EXTI_CLEAR_FLAG();
}
}
/**
* @brief PWR PVD interrupt callback
* @retval None
*/
__weak void HAL_PWR_PVDCallback(void)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PWR_PVDCallback could be implemented in the user file
*/
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_PWR_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_rcc_ex.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief Extended RCC HAL module driver.
* This file provides firmware functions to manage the following
* functionalities RCC extension peripheral:
* + Extended Peripheral Control functions
*
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
#ifdef HAL_RCC_MODULE_ENABLED
/** @defgroup RCCEx RCCEx
* @brief RCC Extension HAL module driver.
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup RCCEx_Private_Constants RCCEx Private Constants
* @{
*/
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/** @defgroup RCCEx_Private_Macros RCCEx Private Macros
* @{
*/
/**
* @}
*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup RCCEx_Exported_Functions RCCEx Exported Functions
* @{
*/
/** @defgroup RCCEx_Exported_Functions_Group1 Peripheral Control functions
* @brief Extended Peripheral Control functions
*
@verbatim
===============================================================================
##### Extended Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the RCC Clocks
frequencies.
[..]
(@) Important note: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to
select the RTC clock source; in this case the Backup domain will be reset in
order to modify the RTC Clock source, as consequence RTC registers (including
the backup registers) are set to their reset values.
@endverbatim
* @{
*/
/**
* @brief Initializes the RCC extended peripherals clocks according to the specified parameters in the
* RCC_PeriphCLKInitTypeDef.
* @param PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that
* contains the configuration information for the Extended Peripherals clocks(RTC clock).
*
* @note Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select
* the RTC clock source; in this case the Backup domain will be reset in
* order to modify the RTC Clock source, as consequence RTC registers (including
* the backup registers) are set to their reset values.
*
* @note In case of STM32F105xC or STM32F107xC devices, PLLI2S will be enabled if requested on
* one of 2 I2S interfaces. When PLLI2S is enabled, you need to call HAL_RCCEx_DisablePLLI2S to
* manually disable it.
*
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
{
uint32_t tickstart = 0, temp_reg = 0;
#if defined(STM32F105xC) || defined(STM32F107xC)
uint32_t pllactive = 0;
#endif /* STM32F105xC || STM32F107xC */
/* Check the parameters */
assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection));
/*------------------------------- RTC/LCD Configuration ------------------------*/
if ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == RCC_PERIPHCLK_RTC))
{
/* check for RTC Parameters used to output RTCCLK */
assert_param(IS_RCC_RTCCLKSOURCE(PeriphClkInit->RTCClockSelection));
/* Enable Power Clock*/
__HAL_RCC_PWR_CLK_ENABLE();
/* Enable write access to Backup domain */
SET_BIT(PWR->CR, PWR_CR_DBP);
/* Wait for Backup domain Write protection disable */
tickstart = HAL_GetTick();
while((PWR->CR & PWR_CR_DBP) == RESET)
{
if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Reset the Backup domain only if the RTC Clock source selection is modified from reset value */
temp_reg = (RCC->BDCR & RCC_BDCR_RTCSEL);
if((temp_reg != 0x00000000U) && (temp_reg != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)))
{
/* Store the content of BDCR register before the reset of Backup Domain */
temp_reg = (RCC->BDCR & ~(RCC_BDCR_RTCSEL));
/* RTC Clock selection can be changed only if the Backup Domain is reset */
__HAL_RCC_BACKUPRESET_FORCE();
__HAL_RCC_BACKUPRESET_RELEASE();
/* Restore the Content of BDCR register */
RCC->BDCR = temp_reg;
/* Wait for LSERDY if LSE was enabled */
if (HAL_IS_BIT_SET(temp_reg, RCC_BDCR_LSEON))
{
/* Get timeout */
tickstart = HAL_GetTick();
/* Wait till LSE is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
{
if((HAL_GetTick() - tickstart) > RCC_LSE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
}
__HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection);
}
/*------------------------------ ADC clock Configuration ------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC) == RCC_PERIPHCLK_ADC)
{
/* Check the parameters */
assert_param(IS_RCC_ADCPLLCLK_DIV(PeriphClkInit->AdcClockSelection));
/* Configure the ADC clock source */
__HAL_RCC_ADC_CONFIG(PeriphClkInit->AdcClockSelection);
}
#if defined(STM32F105xC) || defined(STM32F107xC)
/*------------------------------ I2S2 Configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S2) == RCC_PERIPHCLK_I2S2)
{
/* Check the parameters */
assert_param(IS_RCC_I2S2CLKSOURCE(PeriphClkInit->I2s2ClockSelection));
/* Configure the I2S2 clock source */
__HAL_RCC_I2S2_CONFIG(PeriphClkInit->I2s2ClockSelection);
}
/*------------------------------ I2S3 Configuration ------------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S3) == RCC_PERIPHCLK_I2S3)
{
/* Check the parameters */
assert_param(IS_RCC_I2S3CLKSOURCE(PeriphClkInit->I2s3ClockSelection));
/* Configure the I2S3 clock source */
__HAL_RCC_I2S3_CONFIG(PeriphClkInit->I2s3ClockSelection);
}
/*------------------------------ PLL I2S Configuration ----------------------*/
/* Check that PLLI2S need to be enabled */
if (HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_I2S2SRC) || HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_I2S3SRC))
{
/* Update flag to indicate that PLL I2S should be active */
pllactive = 1;
}
/* Check if PLL I2S need to be enabled */
if (pllactive == 1)
{
/* Enable PLL I2S only if not active */
if (HAL_IS_BIT_CLR(RCC->CR, RCC_CR_PLL3ON))
{
/* Check the parameters */
assert_param(IS_RCC_PLLI2S_MUL(PeriphClkInit->PLLI2S.PLLI2SMUL));
assert_param(IS_RCC_HSE_PREDIV2(PeriphClkInit->PLLI2S.HSEPrediv2Value));
/* Prediv2 can be written only when the PLL2 is disabled. */
/* Return an error only if new value is different from the programmed value */
if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL2ON) && \
(__HAL_RCC_HSE_GET_PREDIV2() != PeriphClkInit->PLLI2S.HSEPrediv2Value))
{
return HAL_ERROR;
}
/* Configure the HSE prediv2 factor --------------------------------*/
__HAL_RCC_HSE_PREDIV2_CONFIG(PeriphClkInit->PLLI2S.HSEPrediv2Value);
/* Configure the main PLLI2S multiplication factors. */
__HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SMUL);
/* Enable the main PLLI2S. */
__HAL_RCC_PLLI2S_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLLI2S is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* Return an error only if user wants to change the PLLI2SMUL whereas PLLI2S is active */
if (READ_BIT(RCC->CFGR2, RCC_CFGR2_PLL3MUL) != PeriphClkInit->PLLI2S.PLLI2SMUL)
{
return HAL_ERROR;
}
}
}
#endif /* STM32F105xC || STM32F107xC */
#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
|| defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
|| defined(STM32F105xC) || defined(STM32F107xC)
/*------------------------------ USB clock Configuration ------------------*/
if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == RCC_PERIPHCLK_USB)
{
/* Check the parameters */
assert_param(IS_RCC_USBPLLCLK_DIV(PeriphClkInit->UsbClockSelection));
/* Configure the USB clock source */
__HAL_RCC_USB_CONFIG(PeriphClkInit->UsbClockSelection);
}
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
return HAL_OK;
}
/**
* @brief Get the PeriphClkInit according to the internal
* RCC configuration registers.
* @param PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that
* returns the configuration information for the Extended Peripherals clocks(RTC, I2S, ADC clocks).
* @retval None
*/
void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit)
{
uint32_t srcclk = 0;
/* Set all possible values for the extended clock type parameter------------*/
PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_RTC;
/* Get the RTC configuration -----------------------------------------------*/
srcclk = __HAL_RCC_GET_RTC_SOURCE();
/* Source clock is LSE or LSI*/
PeriphClkInit->RTCClockSelection = srcclk;
/* Get the ADC clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_ADC;
PeriphClkInit->AdcClockSelection = __HAL_RCC_GET_ADC_SOURCE();
#if defined(STM32F105xC) || defined(STM32F107xC)
/* Get the I2S2 clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S2;
PeriphClkInit->I2s2ClockSelection = __HAL_RCC_GET_I2S2_SOURCE();
/* Get the I2S3 clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S3;
PeriphClkInit->I2s3ClockSelection = __HAL_RCC_GET_I2S3_SOURCE();
#endif /* STM32F105xC || STM32F107xC */
#if defined(STM32F103xE) || defined(STM32F103xG)
/* Get the I2S2 clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S2;
PeriphClkInit->I2s2ClockSelection = RCC_I2S2CLKSOURCE_SYSCLK;
/* Get the I2S3 clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S3;
PeriphClkInit->I2s3ClockSelection = RCC_I2S3CLKSOURCE_SYSCLK;
#endif /* STM32F103xE || STM32F103xG */
#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
|| defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
|| defined(STM32F105xC) || defined(STM32F107xC)
/* Get the USB clock configuration -----------------------------------------*/
PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USB;
PeriphClkInit->UsbClockSelection = __HAL_RCC_GET_USB_SOURCE();
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
}
/**
* @brief Returns the peripheral clock frequency
* @note Returns 0 if peripheral clock is unknown
* @param PeriphClk Peripheral clock identifier
* This parameter can be one of the following values:
* @arg @ref RCC_PERIPHCLK_RTC RTC peripheral clock
* @arg @ref RCC_PERIPHCLK_ADC ADC peripheral clock
@if STM32F103xE
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
@endif
@if STM32F103xG
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
@endif
@if STM32F105xC
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
@endif
@if STM32F107xC
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock
* @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock
* @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
@endif
@if STM32F102xx
* @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
@endif
@if STM32F103xx
* @arg @ref RCC_PERIPHCLK_USB USB peripheral clock
@endif
* @retval Frequency in Hz (0: means that no available frequency for the peripheral)
*/
uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk)
{
#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
|| defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
|| defined(STM32F105xC) || defined(STM32F107xC)
#if defined(STM32F105xC) || defined(STM32F107xC)
const uint8_t aPLLMULFactorTable[12] = {0, 0, 4, 5, 6, 7, 8, 9, 0, 0, 0, 13};
const uint8_t aPredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16};
#else
const uint8_t aPLLMULFactorTable[16] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16};
const uint8_t aPredivFactorTable[2] = { 1, 2};
#endif
#endif
uint32_t temp_reg = 0, frequency = 0;
#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
|| defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
|| defined(STM32F105xC) || defined(STM32F107xC)
uint32_t prediv1 = 0, pllclk = 0, pllmul = 0;
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
#if defined(STM32F105xC) || defined(STM32F107xC)
uint32_t pll2mul = 0, pll3mul = 0, prediv2 = 0;
#endif /* STM32F105xC || STM32F107xC */
/* Check the parameters */
assert_param(IS_RCC_PERIPHCLOCK(PeriphClk));
switch (PeriphClk)
{
#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\
|| defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\
|| defined(STM32F105xC) || defined(STM32F107xC)
case RCC_PERIPHCLK_USB:
{
/* Get RCC configuration ------------------------------------------------------*/
temp_reg = RCC->CFGR;
/* Check if PLL is enabled */
if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLLON))
{
pllmul = aPLLMULFactorTable[(uint32_t)(temp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
{
#if defined(STM32F105xC) || defined(STM32F107xC) || defined(STM32F100xB)\
|| defined(STM32F100xE)
prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
#else
prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR & RCC_CFGR_PLLXTPRE) >> POSITION_VAL(RCC_CFGR_PLLXTPRE)];
#endif /* STM32F105xC || STM32F107xC || STM32F100xB || STM32F100xE */
#if defined(STM32F105xC) || defined(STM32F107xC)
if(HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_PREDIV1SRC))
{
/* PLL2 selected as Prediv1 source */
/* PLLCLK = PLL2CLK / PREDIV1 * PLLMUL with PLL2CLK = HSE/PREDIV2 * PLL2MUL */
prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1;
pll2mul = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> POSITION_VAL(RCC_CFGR2_PLL2MUL)) + 2;
pllclk = (uint32_t)((((HSE_VALUE / prediv2) * pll2mul) / prediv1) * pllmul);
}
else
{
/* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
}
/* If PLLMUL was set to 13 means that it was to cover the case PLLMUL 6.5 (avoid using float) */
/* In this case need to divide pllclk by 2 */
if (pllmul == aPLLMULFactorTable[(uint32_t)(RCC_CFGR_PLLMULL6_5) >> POSITION_VAL(RCC_CFGR_PLLMULL)])
{
pllclk = pllclk / 2;
}
#else
if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
{
/* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
}
#endif /* STM32F105xC || STM32F107xC */
}
else
{
/* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */
pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul);
}
/* Calcul of the USB frequency*/
#if defined(STM32F105xC) || defined(STM32F107xC)
/* USBCLK = PLLVCO = (2 x PLLCLK) / USB prescaler */
if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL_DIV2)
{
/* Prescaler of 2 selected for USB */
frequency = pllclk;
}
else
{
/* Prescaler of 3 selected for USB */
frequency = (2 * pllclk) / 3;
}
#else
/* USBCLK = PLLCLK / USB prescaler */
if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL)
{
/* No prescaler selected for USB */
frequency = pllclk;
}
else
{
/* Prescaler of 1.5 selected for USB */
frequency = (pllclk * 2) / 3;
}
#endif
}
break;
}
#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
#if defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC)\
|| defined(STM32F107xC)
case RCC_PERIPHCLK_I2S2:
{
#if defined(STM32F103xE) || defined(STM32F103xG)
/* SYSCLK used as source clock for I2S2 */
frequency = HAL_RCC_GetSysClockFreq();
#else
if (__HAL_RCC_GET_I2S2_SOURCE() == RCC_I2S2CLKSOURCE_SYSCLK)
{
/* SYSCLK used as source clock for I2S2 */
frequency = HAL_RCC_GetSysClockFreq();
}
else
{
/* Check if PLLI2S is enabled */
if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLL3ON))
{
/* PLLI2SVCO = 2 * PLLI2SCLK = 2 * (HSE/PREDIV2 * PLL3MUL) */
prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1;
pll3mul = ((RCC->CFGR2 & RCC_CFGR2_PLL3MUL) >> POSITION_VAL(RCC_CFGR2_PLL3MUL)) + 2;
frequency = (uint32_t)(2 * ((HSE_VALUE / prediv2) * pll3mul));
}
}
#endif /* STM32F103xE || STM32F103xG */
break;
}
case RCC_PERIPHCLK_I2S3:
{
#if defined(STM32F103xE) || defined(STM32F103xG)
/* SYSCLK used as source clock for I2S3 */
frequency = HAL_RCC_GetSysClockFreq();
#else
if (__HAL_RCC_GET_I2S3_SOURCE() == RCC_I2S3CLKSOURCE_SYSCLK)
{
/* SYSCLK used as source clock for I2S3 */
frequency = HAL_RCC_GetSysClockFreq();
}
else
{
/* Check if PLLI2S is enabled */
if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLL3ON))
{
/* PLLI2SVCO = 2 * PLLI2SCLK = 2 * (HSE/PREDIV2 * PLL3MUL) */
prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1;
pll3mul = ((RCC->CFGR2 & RCC_CFGR2_PLL3MUL) >> POSITION_VAL(RCC_CFGR2_PLL3MUL)) + 2;
frequency = (uint32_t)(2 * ((HSE_VALUE / prediv2) * pll3mul));
}
}
#endif /* STM32F103xE || STM32F103xG */
break;
}
#endif /* STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */
case RCC_PERIPHCLK_RTC:
{
/* Get RCC BDCR configuration ------------------------------------------------------*/
temp_reg = RCC->BDCR;
/* Check if LSE is ready if RTC clock selection is LSE */
if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(temp_reg, RCC_BDCR_LSERDY)))
{
frequency = LSE_VALUE;
}
/* Check if LSI is ready if RTC clock selection is LSI */
else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY)))
{
frequency = LSI_VALUE;
}
else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_HSE_DIV128) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSERDY)))
{
frequency = HSE_VALUE / 128;
}
/* Clock not enabled for RTC*/
else
{
frequency = 0;
}
break;
}
case RCC_PERIPHCLK_ADC:
{
frequency = HAL_RCC_GetPCLK2Freq() / (((__HAL_RCC_GET_ADC_SOURCE() >> POSITION_VAL(RCC_CFGR_ADCPRE_DIV4)) + 1) * 2);
break;
}
default:
{
break;
}
}
return(frequency);
}
/**
* @}
*/
#if defined(STM32F105xC) || defined(STM32F107xC)
/** @defgroup RCCEx_Exported_Functions_Group2 PLLI2S Management function
* @brief PLLI2S Management functions
*
@verbatim
===============================================================================
##### Extended PLLI2S Management functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the PLLI2S
activation or deactivation
@endverbatim
* @{
*/
/**
* @brief Enable PLLI2S
* @param PLLI2SInit pointer to an RCC_PLLI2SInitTypeDef structure that
* contains the configuration information for the PLLI2S
* @note The PLLI2S configuration not modified if used by I2S2 or I2S3 Interface.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_EnablePLLI2S(RCC_PLLI2SInitTypeDef *PLLI2SInit)
{
uint32_t tickstart = 0;
/* Check that PLL I2S has not been already enabled by I2S2 or I2S3*/
if (HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S2SRC) && HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S3SRC))
{
/* Check the parameters */
assert_param(IS_RCC_PLLI2S_MUL(PLLI2SInit->PLLI2SMUL));
assert_param(IS_RCC_HSE_PREDIV2(PLLI2SInit->HSEPrediv2Value));
/* Prediv2 can be written only when the PLL2 is disabled. */
/* Return an error only if new value is different from the programmed value */
if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL2ON) && \
(__HAL_RCC_HSE_GET_PREDIV2() != PLLI2SInit->HSEPrediv2Value))
{
return HAL_ERROR;
}
/* Disable the main PLLI2S. */
__HAL_RCC_PLLI2S_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLLI2S is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Configure the HSE prediv2 factor --------------------------------*/
__HAL_RCC_HSE_PREDIV2_CONFIG(PLLI2SInit->HSEPrediv2Value);
/* Configure the main PLLI2S multiplication factors. */
__HAL_RCC_PLLI2S_CONFIG(PLLI2SInit->PLLI2SMUL);
/* Enable the main PLLI2S. */
__HAL_RCC_PLLI2S_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLLI2S is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* PLLI2S cannot be modified as already used by I2S2 or I2S3 */
return HAL_ERROR;
}
return HAL_OK;
}
/**
* @brief Disable PLLI2S
* @note PLLI2S is not disabled if used by I2S2 or I2S3 Interface.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_DisablePLLI2S(void)
{
uint32_t tickstart = 0;
/* Disable PLL I2S as not requested by I2S2 or I2S3*/
if (HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S2SRC) && HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S3SRC))
{
/* Disable the main PLLI2S. */
__HAL_RCC_PLLI2S_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLLI2S is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
else
{
/* PLLI2S is currently used by I2S2 or I2S3. Cannot be disabled.*/
return HAL_ERROR;
}
return HAL_OK;
}
/**
* @}
*/
/** @defgroup RCCEx_Exported_Functions_Group3 PLL2 Management function
* @brief PLL2 Management functions
*
@verbatim
===============================================================================
##### Extended PLL2 Management functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the PLL2
activation or deactivation
@endverbatim
* @{
*/
/**
* @brief Enable PLL2
* @param PLL2Init pointer to an RCC_PLL2InitTypeDef structure that
* contains the configuration information for the PLL2
* @note The PLL2 configuration not modified if used indirectly as system clock.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_EnablePLL2(RCC_PLL2InitTypeDef *PLL2Init)
{
uint32_t tickstart = 0;
/* This bit can not be cleared if the PLL2 clock is used indirectly as system
clock (i.e. it is used as PLL clock entry that is used as system clock). */
if((__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE) && \
(__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && \
((READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC)) == RCC_CFGR2_PREDIV1SRC_PLL2))
{
return HAL_ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_RCC_PLL2_MUL(PLL2Init->PLL2MUL));
assert_param(IS_RCC_HSE_PREDIV2(PLL2Init->HSEPrediv2Value));
/* Prediv2 can be written only when the PLLI2S is disabled. */
/* Return an error only if new value is different from the programmed value */
if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL3ON) && \
(__HAL_RCC_HSE_GET_PREDIV2() != PLL2Init->HSEPrediv2Value))
{
return HAL_ERROR;
}
/* Disable the main PLL2. */
__HAL_RCC_PLL2_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL2 is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Configure the HSE prediv2 factor --------------------------------*/
__HAL_RCC_HSE_PREDIV2_CONFIG(PLL2Init->HSEPrediv2Value);
/* Configure the main PLL2 multiplication factors. */
__HAL_RCC_PLL2_CONFIG(PLL2Init->PLL2MUL);
/* Enable the main PLL2. */
__HAL_RCC_PLL2_ENABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL2 is ready */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) == RESET)
{
if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
return HAL_OK;
}
/**
* @brief Disable PLL2
* @note PLL2 is not disabled if used indirectly as system clock.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RCCEx_DisablePLL2(void)
{
uint32_t tickstart = 0;
/* This bit can not be cleared if the PLL2 clock is used indirectly as system
clock (i.e. it is used as PLL clock entry that is used as system clock). */
if((__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE) && \
(__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && \
((READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC)) == RCC_CFGR2_PREDIV1SRC_PLL2))
{
return HAL_ERROR;
}
else
{
/* Disable the main PLL2. */
__HAL_RCC_PLL2_DISABLE();
/* Get Start Tick*/
tickstart = HAL_GetTick();
/* Wait till PLL2 is disabled */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET)
{
if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
}
return HAL_OK;
}
/**
* @}
*/
#endif /* STM32F105xC || STM32F107xC */
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_RCC_MODULE_ENABLED */
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32f1xx_hal_spi_ex.c
* @author MCD Application Team
* @version V1.0.4
* @date 29-April-2016
* @brief Extended SPI HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities SPI extension peripheral:
* + Extended Peripheral Control functions
*
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
/** @addtogroup STM32F1xx_HAL_Driver
* @{
*/
/** @addtogroup SPI
* @{
*/
#ifdef HAL_SPI_MODULE_ENABLED
/** @defgroup SPI_Private_Variables SPI Private Variables
* @{
*/
/* Variable used to determine if device is impacted by implementation of workaround
related to wrong CRC errors detection on SPI2. Conditions in which this workaround has to be applied, are:
- STM32F101CDE/STM32F103CDE
- Revision ID : Z
- SPI2
- In receive only mode, with CRC calculation enabled, at the end of the CRC reception,
the software needs to check the CRCERR flag. If it is found set, read back the SPI_RXCRC:
+ If the value is 0, the complete data transfer is successful.
+ Otherwise, one or more errors have been detected during the data transfer by CPU or DMA.
If CRCERR is found reset, the complete data transfer is considered successful.
*/
uint8_t uCRCErrorWorkaroundCheck = 0;
/**
* @}
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @addtogroup SPI_Exported_Functions
* @{
*/
/** @addtogroup SPI_Exported_Functions_Group1
*
* @{
*/
/**
* @brief Initializes the SPI according to the specified parameters
* in the SPI_InitTypeDef and create the associated handle.
* @param hspi: pointer to a SPI_HandleTypeDef structure that contains
* the configuration information for SPI module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi)
{
/* Check the SPI handle allocation */
if(hspi == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_SPI_ALL_INSTANCE(hspi->Instance));
assert_param(IS_SPI_MODE(hspi->Init.Mode));
assert_param(IS_SPI_DIRECTION_MODE(hspi->Init.Direction));
assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize));
assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity));
assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase));
assert_param(IS_SPI_NSS(hspi->Init.NSS));
assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler));
assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit));
assert_param(IS_SPI_TIMODE(hspi->Init.TIMode));
assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation));
assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial));
if(hspi->State == HAL_SPI_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
HAL_SPI_MspInit(hspi);
}
hspi->State = HAL_SPI_STATE_BUSY;
/* Disble the selected SPI peripheral */
__HAL_SPI_DISABLE(hspi);
/*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/
/* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management,
Communication speed, First bit and CRC calculation state */
WRITE_REG(hspi->Instance->CR1, (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize |
hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) |
hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation) );
/* Configure : NSS management */
WRITE_REG(hspi->Instance->CR2, (((hspi->Init.NSS >> 16) & SPI_CR2_SSOE) | hspi->Init.TIMode));
/*---------------------------- SPIx CRCPOLY Configuration ------------------*/
/* Configure : CRC Polynomial */
WRITE_REG(hspi->Instance->CRCPR, hspi->Init.CRCPolynomial);
#if defined (STM32F101x6) || defined (STM32F101xB) || defined (STM32F101xE) || defined (STM32F101xG) || defined (STM32F102x6) || defined (STM32F102xB) || defined (STM32F103x6) || defined (STM32F103xB) || defined (STM32F103xE) || defined (STM32F103xG) || defined (STM32F105xC) || defined (STM32F107xC)
/* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */
CLEAR_BIT(hspi->Instance->I2SCFGR, SPI_I2SCFGR_I2SMOD);
#endif
#if defined (STM32F101xE) || defined (STM32F103xE)
/* Check RevisionID value for identifying if Device is Rev Z (0x0001) in order to enable workaround for
CRC errors wrongly detected */
/* Pb is that ES_STM32F10xxCDE also identify an issue in Debug registers access while not in Debug mode.
Revision ID information is only available in Debug mode, so Workaround could not be implemented
to distinguish Rev Z devices (issue present) from more recent version (issue fixed).
So, in case of Revison Z F101 or F103 devices, below variable should be assigned to 1 */
uCRCErrorWorkaroundCheck = 0;
#else
uCRCErrorWorkaroundCheck = 0;
#endif
hspi->ErrorCode = HAL_SPI_ERROR_NONE;
hspi->State = HAL_SPI_STATE_READY;
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup SPI_Private_Functions
* @{
*/
/**
* @brief Checks if encountered CRC error could be corresponding to wrongly detected errors
* according to SPI instance, Device type, and revision ID.
* @param hspi: pointer to a SPI_HandleTypeDef structure that contains
* the configuration information for SPI module.
* @retval CRC error validity (SPI_INVALID_CRC_ERROR or SPI_VALID_CRC_ERROR).
*/
uint8_t SPI_ISCRCErrorValid(SPI_HandleTypeDef *hspi)
{
#if defined (STM32F101xE) || defined (STM32F103xE)
/* Check how to handle this CRC error (workaround to be applied or not) */
/* If CRC errors could be wrongly detected (issue 2.15.2 in STM32F10xxC/D/E silicon limitations ES (DocID14732 Rev 13) */
if ( (uCRCErrorWorkaroundCheck != 0) && (hspi->Instance == SPI2) )
{
if (hspi->Instance->RXCRCR == 0)
{
return (SPI_INVALID_CRC_ERROR);
}
}
return (SPI_VALID_CRC_ERROR);
#else
return (SPI_VALID_CRC_ERROR);
#endif
}
/**
* @}
*/
#endif /* HAL_SPI_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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