eeprom stuff
This commit is contained in:
parent
a875b34958
commit
076eca0a49
@ -8,24 +8,11 @@
|
||||
#ifndef EEPROM_H_
|
||||
#define EEPROM_H_
|
||||
|
||||
#include "stm32f1xx_hal.h"
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define STORAGE_ADDRESS 0x20
|
||||
|
||||
|
||||
typedef struct {
|
||||
uint32_t magic;
|
||||
uint32_t savedTemperature;
|
||||
uint32_t savedTime;
|
||||
uint32_t operatingTime;
|
||||
} tStorage;
|
||||
|
||||
|
||||
void eepromWrite(uint16_t addr, uint8_t *buf, uint8_t len);
|
||||
void eepromRead(uint16_t addr, uint8_t *buf, uint8_t len);
|
||||
|
||||
void eepromWriteStorage();
|
||||
int eepromReadStorage();
|
||||
|
||||
#endif /* EEPROM_H_ */
|
||||
|
@ -1,18 +1,12 @@
|
||||
/*
|
||||
* eeprom.c
|
||||
*
|
||||
* Created on: Jun 7, 2017
|
||||
* Author: wn
|
||||
*/
|
||||
|
||||
#include "eeprom.h"
|
||||
#include "stm32f1xx_hal.h"
|
||||
#include <main.h>
|
||||
#include <spi.h>
|
||||
#include <eeprom.h>
|
||||
// #include <stm32f1xx_hal.h>
|
||||
#include <string.h>
|
||||
|
||||
#define HIGH GPIO_PIN_SET
|
||||
#define LOW GPIO_PIN_RESET
|
||||
|
||||
extern SPI_HandleTypeDef hspi1;
|
||||
|
||||
|
||||
const uint8_t EEPROM_READ = 0x03;
|
||||
@ -27,101 +21,51 @@ const uint32_t STORAGE_MAGIC = 0xaffe000b;
|
||||
|
||||
|
||||
|
||||
tStorage storage;
|
||||
extern tDisplay display;
|
||||
|
||||
|
||||
static void __EEPROM_CS(GPIO_PinState v) {
|
||||
typedef union {
|
||||
struct {
|
||||
uint8_t cmd;
|
||||
uint16_t addr;
|
||||
uint8_t data[32];
|
||||
} s;
|
||||
uint8_t b[35];
|
||||
} t_spiMsg;
|
||||
|
||||
|
||||
inline static void __EEPROM_CS(GPIO_PinState v) {
|
||||
HAL_GPIO_WritePin(EEPROM_CS_GPIO_Port, EEPROM_CS_Pin, v);
|
||||
}
|
||||
|
||||
|
||||
__attribute__((unused)) static uint8_t eepromReadStatus() {
|
||||
struct {
|
||||
uint8_t rdsr;
|
||||
uint8_t data;
|
||||
} txMsg = {
|
||||
.rdsr = EEPROM_RDSR
|
||||
}, rxMsg;
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_TransmitReceive(&eepromSpi, &txMsg, &rxMsg, 2, HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
|
||||
return rxMsg.data;
|
||||
}
|
||||
|
||||
static void eepromWren() {
|
||||
struct {
|
||||
uint8_t wren;
|
||||
} txMsg = {
|
||||
.wren = EEPROM_WREN
|
||||
};
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_Transmit(&eepromSpi, &txMsg, 1, HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
}
|
||||
|
||||
__attribute__((unused)) static void eepromWrdi() {
|
||||
struct {
|
||||
uint8_t wrdi;
|
||||
} txMsg = {
|
||||
.wrdi = EEPROM_WRDI
|
||||
};
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_Transmit(&eepromSpi, &txMsg, 1, HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
}
|
||||
|
||||
|
||||
void eepromWrite(uint16_t addr, uint8_t *buf, uint8_t len) {
|
||||
struct {
|
||||
uint8_t write;
|
||||
uint16_t addr;
|
||||
uint8_t data[32];
|
||||
} msg = {
|
||||
.write = EEPROM_WRITE,
|
||||
.addr = addr
|
||||
t_spiMsg msg = {
|
||||
.s.cmd = EEPROM_WRITE,
|
||||
.s.addr = addr
|
||||
};
|
||||
memcpy(msg.data, buf, len);
|
||||
memcpy(msg.s.data, buf, len);
|
||||
|
||||
eepromWren();
|
||||
uint8_t writeEnable = EEPROM_WREN;
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_Transmit(&eepromSpi, &msg, ((uint16_t)(len+3+1)), HAL_MAX_DELAY);
|
||||
HAL_SPI_Transmit(&eepromSpi, &writeEnable, 1, HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_Transmit(&eepromSpi, msg.b, ((uint16_t)(len+3+1)), HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
}
|
||||
|
||||
void eepromRead(uint16_t addr, uint8_t *buf, uint8_t len) {
|
||||
struct {
|
||||
uint8_t read;
|
||||
uint16_t addr;
|
||||
uint8_t data[32];
|
||||
} txMsg = {
|
||||
.read = EEPROM_READ,
|
||||
.addr = addr
|
||||
},
|
||||
rxMsg;
|
||||
t_spiMsg txMsg = {
|
||||
.s.cmd = EEPROM_READ,
|
||||
.s.addr = addr
|
||||
};
|
||||
|
||||
t_spiMsg rxMsg;
|
||||
|
||||
__EEPROM_CS(LOW);
|
||||
HAL_SPI_TransmitReceive(&eepromSpi, &txMsg, &rxMsg, ((uint16_t)(len+3+1)), HAL_MAX_DELAY);
|
||||
HAL_SPI_TransmitReceive(&eepromSpi, txMsg.b, rxMsg.b, ((uint16_t)(len+3+1)), HAL_MAX_DELAY);
|
||||
__EEPROM_CS(HIGH);
|
||||
|
||||
memcpy(buf, rxMsg.data, len);
|
||||
}
|
||||
|
||||
int eepromReadStorage() {
|
||||
eepromRead(STORAGE_ADDRESS, (uint8_t*) &storage, sizeof(storage));
|
||||
if (storage.magic == STORAGE_MAGIC) {
|
||||
return 0;
|
||||
} else {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
void eepromWriteStorage() {
|
||||
storage.magic = STORAGE_MAGIC;
|
||||
eepromWrite(STORAGE_ADDRESS, (uint8_t*) &storage, sizeof(storage));
|
||||
memcpy(buf, rxMsg.s.data, len);
|
||||
}
|
||||
|
Loading…
x
Reference in New Issue
Block a user