71 lines
1.8 KiB
C
Executable file
71 lines
1.8 KiB
C
Executable file
#include "stm32f1xx_hal.h"
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#include "EEPROM/eeprom.h"
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/*
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* Debug option
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*/
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#if 0
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//Enable debug
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#include <cstdio>
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#define DBG(x, ...) std::printf("[eeprom: DBG]"x"\r\n", ##__VA_ARGS__);
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#define WARN(x, ...) std::printf("[eeprom: WARN]"x"\r\n", ##__VA_ARGS__);
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#define ERR(x, ...) std::printf("[eeprom: ERR]"x"\r\n", ##__VA_ARGS__);
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#else
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//Disable debug
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#define DBG(x, ...)
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#define WARN(x, ...)
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#define ERR(x, ...)
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#endif
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/*
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* Must call this first to enable writing
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*/
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void enableEEPROMWriting() {
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HAL_StatusTypeDef status = HAL_FLASH_Unlock();
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FLASH_PageErase(EEPROM_START_ADDRESS); // required to re-write
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CLEAR_BIT(FLASH->CR, FLASH_CR_PER); // Bug fix: bit PER has been set in Flash_PageErase(), must clear it here
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}
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void disableEEPROMWriting() {
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HAL_FLASH_Lock();
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}
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/*
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* Writing functions
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* Must call enableEEPROMWriting() first
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*/
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HAL_StatusTypeDef writeEEPROMHalfWord(uint32_t address, uint16_t data) {
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HAL_StatusTypeDef status;
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address = address + EEPROM_START_ADDRESS;
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status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, address, data);
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return status;
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}
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HAL_StatusTypeDef writeEEPROMWord(uint32_t address, uint32_t data) {
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HAL_StatusTypeDef status;
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address = address + EEPROM_START_ADDRESS;
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status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, address, data);
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return status;
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}
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/*
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* Reading functions
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*/
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uint16_t readEEPROMHalfWord(uint32_t address) {
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uint16_t val = 0;
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address = address + EEPROM_START_ADDRESS;
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val = *(__IO uint16_t*)address;
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return val;
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}
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uint32_t readEEPROMWord(uint32_t address) {
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uint32_t val = 0;
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address = address + EEPROM_START_ADDRESS;
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val = *(__IO uint32_t*)address;
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return val;
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}
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