thermometer stuff started

cube/output/ttt2/Inc/stm32f1xx_hal_conf.h

@@ -56,7 +56,7 @@
 /*#define HAL_CORTEX_MODULE_ENABLED   */
 /*#define HAL_CRC_MODULE_ENABLED   */
 /*#define HAL_DAC_MODULE_ENABLED   */
-/*#define HAL_DMA_MODULE_ENABLED   */
+#define HAL_DMA_MODULE_ENABLED
 /*#define HAL_ETH_MODULE_ENABLED   */
 /*#define HAL_FLASH_MODULE_ENABLED   */
 #define HAL_GPIO_MODULE_ENABLED

cube/output/ttt2/Inc/stm32f1xx_it.h

@@ -56,6 +56,7 @@ void PendSV_Handler(void);
 void SysTick_Handler(void);
 void EXTI3_IRQHandler(void);
 void EXTI4_IRQHandler(void);
+void DMA1_Channel1_IRQHandler(void);
 void EXTI9_5_IRQHandler(void);
 
 #ifdef __cplusplus

cube/output/ttt2/Src/main.c

@@ -39,6 +39,7 @@
 
 /* Private variables ---------------------------------------------------------*/
 ADC_HandleTypeDef hadc1;
+DMA_HandleTypeDef hdma_adc1;
 
 SPI_HandleTypeDef hspi1;
 
@@ -53,6 +54,7 @@ TIM_HandleTypeDef htim1;
 void SystemClock_Config(void);
 void Error_Handler(void);
 static void MX_GPIO_Init(void);
+static void MX_DMA_Init(void);
 static void MX_ADC1_Init(void);
 static void MX_SPI1_Init(void);
 static void MX_TIM1_Init(void);
@@ -86,6 +88,7 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
+  MX_DMA_Init();
   MX_ADC1_Init();
   MX_SPI1_Init();
   MX_TIM1_Init();
@@ -163,7 +166,7 @@ static void MX_ADC1_Init(void)
     */
   hadc1.Instance = ADC1;
   hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
-  hadc1.Init.ContinuousConvMode = DISABLE;
+  hadc1.Init.ContinuousConvMode = ENABLE;
   hadc1.Init.DiscontinuousConvMode = DISABLE;
   hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
   hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
@@ -259,7 +262,7 @@ static void MX_TIM1_Init(void)
   }
 
   sConfigOC.OCMode = TIM_OCMODE_TOGGLE;
-  sConfigOC.Pulse = 10000;
+  sConfigOC.Pulse = 0;
   sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
   sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
   sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
@@ -274,6 +277,21 @@ static void MX_TIM1_Init(void)
 
 }
 
+/** 
+  * Enable DMA controller clock
+  */
+static void MX_DMA_Init(void) 
+{
+  /* DMA controller clock enable */
+  __HAL_RCC_DMA1_CLK_ENABLE();
+
+  /* DMA interrupt init */
+  /* DMA1_Channel1_IRQn interrupt configuration */
+  HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
+
+}
+
 /** Configure pins as 
         * Analog 
         * Input 

cube/output/ttt2/Src/stm32f1xx_hal_msp.c

@@ -34,6 +34,8 @@
 /* Includes ------------------------------------------------------------------*/
 #include "stm32f1xx_hal.h"
 
+extern DMA_HandleTypeDef hdma_adc1;
+
 extern void Error_Handler(void);
 /* USER CODE BEGIN 0 */
 
@@ -96,6 +98,23 @@ void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
     GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+    /* Peripheral DMA init*/
+  
+    hdma_adc1.Instance = DMA1_Channel1;
+    hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
+    hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+    hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+    hdma_adc1.Init.Mode = DMA_NORMAL;
+    hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;
+    if (HAL_DMA_Init(&hdma_adc1) != HAL_OK)
+    {
+      Error_Handler();
+    }
+
+    __HAL_LINKDMA(hadc,DMA_Handle,hdma_adc1);
+
   /* USER CODE BEGIN ADC1_MspInit 1 */
 
   /* USER CODE END ADC1_MspInit 1 */
@@ -119,6 +138,8 @@ void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
     */
     HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0);
 
+    /* Peripheral DMA DeInit*/
+    HAL_DMA_DeInit(hadc->DMA_Handle);
   }
   /* USER CODE BEGIN ADC1_MspDeInit 1 */
 

cube/output/ttt2/Src/stm32f1xx_it.c

@@ -40,6 +40,7 @@
 /* USER CODE END 0 */
 
 /* External variables --------------------------------------------------------*/
+extern DMA_HandleTypeDef hdma_adc1;
 
 /******************************************************************************/
 /*            Cortex-M3 Processor Interruption and Exception Handlers         */ 
@@ -211,6 +212,20 @@ void EXTI4_IRQHandler(void)
   /* USER CODE END EXTI4_IRQn 1 */
 }
 
+/**
+* @brief This function handles DMA1 channel1 global interrupt.
+*/
+void DMA1_Channel1_IRQHandler(void)
+{
+  /* USER CODE BEGIN DMA1_Channel1_IRQn 0 */
+
+  /* USER CODE END DMA1_Channel1_IRQn 0 */
+  HAL_DMA_IRQHandler(&hdma_adc1);
+  /* USER CODE BEGIN DMA1_Channel1_IRQn 1 */
+
+  /* USER CODE END DMA1_Channel1_IRQn 1 */
+}
+
 /**
 * @brief This function handles EXTI line[9:5] interrupts.
 */

cube/output/ttt2/ttt2.ioc

@@ -1,6 +1,6 @@
 #MicroXplorer Configuration settings - do not modify
 ADC1.Channel-45\#ChannelRegularConversion=ADC_CHANNEL_0
-ADC1.ContinuousConvMode=DISABLE
+ADC1.ContinuousConvMode=ENABLE
 ADC1.DataAlign=ADC_DATAALIGN_RIGHT
 ADC1.DiscontinuousConvMode=DISABLE
 ADC1.EnableAnalogWatchDog=false
@@ -14,16 +14,28 @@ ADC1.Rank-45\#ChannelRegularConversion=1
 ADC1.SamplingTime-45\#ChannelRegularConversion=ADC_SAMPLETIME_1CYCLE_5
 ADC1.ScanConvMode=ADC_SCAN_DISABLE
 ADC1.master=1
+Dma.ADC1.0.Direction=DMA_PERIPH_TO_MEMORY
+Dma.ADC1.0.Instance=DMA1_Channel1
+Dma.ADC1.0.MemDataAlignment=DMA_MDATAALIGN_HALFWORD
+Dma.ADC1.0.MemInc=DMA_MINC_ENABLE
+Dma.ADC1.0.Mode=DMA_NORMAL
+Dma.ADC1.0.PeriphDataAlignment=DMA_PDATAALIGN_HALFWORD
+Dma.ADC1.0.PeriphInc=DMA_PINC_DISABLE
+Dma.ADC1.0.Priority=DMA_PRIORITY_LOW
+Dma.ADC1.0.RequestParameters=Instance,Direction,PeriphInc,MemInc,PeriphDataAlignment,MemDataAlignment,Mode,Priority
+Dma.Request0=ADC1
+Dma.RequestsNb=1
 File.Version=6
 KeepUserPlacement=false
 Mcu.Family=STM32F1
 Mcu.IP0=ADC1
-Mcu.IP1=NVIC
+Mcu.IP1=DMA
-Mcu.IP2=RCC
+Mcu.IP2=NVIC
-Mcu.IP3=SPI1
+Mcu.IP3=RCC
-Mcu.IP4=SYS
+Mcu.IP4=SPI1
-Mcu.IP5=TIM1
+Mcu.IP5=SYS
-Mcu.IPNb=6
+Mcu.IP6=TIM1
+Mcu.IPNb=7
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PC13-TAMPER-RTC
@@ -52,6 +64,7 @@ Mcu.UserName=STM32F103C8Tx
 MxCube.Version=4.16.1
 MxDb.Version=DB.4.0.161
 NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true
+NVIC.DMA1_Channel1_IRQn=true\:0\:0\:false\:false\:true
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true
 NVIC.EXTI3_IRQn=true\:0\:0\:false\:false\:true
 NVIC.EXTI4_IRQn=true\:0\:0\:false\:false\:true
@@ -158,7 +171,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=SW4STM32
 ProjectManager.ToolChainLocation=/home/wn/workspace-stm32/ttt2/cube/output/ttt2
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false,2-MX_ADC1_Init-ADC1-false,3-MX_SPI1_Init-SPI1-false,4-MX_TIM1_Init-TIM1-false
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false,2-MX_DMA_Init-DMA-false,3-MX_ADC1_Init-ADC1-false,4-MX_SPI1_Init-SPI1-false,5-MX_TIM1_Init-TIM1-false
 RCC.ADCFreqValue=12000000
 RCC.ADCPresc=RCC_ADCPCLK2_DIV6
 RCC.AHBFreq_Value=72000000
@@ -202,7 +215,7 @@ TIM1.IPParameters=OCMode_1,Pulse-Output Compare1 CH1,Prescaler,Period
 TIM1.OCMode_1=TIM_OCMODE_TOGGLE
 TIM1.Period=1000
 TIM1.Prescaler=36
-TIM1.Pulse-Output\ Compare1\ CH1=10000
+TIM1.Pulse-Output\ Compare1\ CH1=0
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 VP_TIM1_VS_ClockSourceINT.Mode=Internal

my_src/thermometer.c

@@ -0,0 +1,54 @@
+/*
+ * thermometer.c
+ *
+ *  Created on: Jun 13, 2017
+ *      Author: wn
+ */
+
+
+#include "stm32f1xx_hal.h"
+#include "thermometer.h"
+#include <PontCoopScheduler.h>
+
+
+extern ADC_HandleTypeDef hadc1;
+
+
+#define NUM_OF_CONV 10
+
+uint16_t adcBuf[NUM_OF_CONV];
+volatile uint32_t value;
+
+const float R_REF = 1000.0;
+const uint16_t N_MAX = 4095;
+const float PT1000_R0 = 1000.0;
+const float PT1000_Coeff = 3.85e-3;
+
+
+
+void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc) {
+  HAL_ADC_Stop_DMA(hadc);
+
+  uint32_t sum = 0;
+  for (uint8_t i = 0; i < NUM_OF_CONV; i++) {
+    sum += adcBuf[i];
+  }
+  uint32_t avg = sum / NUM_OF_CONV;
+  value = avg;
+}
+
+void thermometerStartCycle(void *handle) {
+  HAL_ADC_Start_DMA(&hadc1, ((uint32_t*)adcBuf), NUM_OF_CONV);
+}
+
+void thermometerInit() {
+  HAL_ADCEx_Calibration_Start(&hadc1);
+  schAdd(thermometerStartCycle, NULL, 0, 100);
+}
+
+uint32_t thermometerGetValue() {
+  float r = R_REF / ((((float)N_MAX) / ((float)value)) - 1.0);
+  float t = ((r / PT1000_R0) - 1) / PT1000_Coeff;
+  uint32_t tn = (t < 0) ? 0 : (uint16_t)t;
+  return tn;
+}

my_src/thermometer.h

@@ -0,0 +1,14 @@
+/*
+ * thermometer.h
+ *
+ *  Created on: Jun 13, 2017
+ *      Author: wn
+ */
+
+#ifndef THERMOMETER_H_
+#define THERMOMETER_H_
+
+void thermometerInit();
+uint32_t thermometerGetValue();
+
+#endif /* THERMOMETER_H_ */