eeprom_flash
Dependents: STM32F103C8T6_WIFI_Heating_system
Fork of eeprom_flash by
eeprom_flash.cpp
- Committer:
- andrewklmn
- Date:
- 2018-09-18
- Revision:
- 4:404dd375323c
- Parent:
- 3:35953bc8607a
File content as of revision 4:404dd375323c:
#include "mbed.h" #include "eeprom_flash.h" void _FLASH_PageErase(uint32_t PageAddress) { /* Proceed to erase the page */ SET_BIT(FLASH->CR, FLASH_CR_PER); while (FLASH->SR & FLASH_SR_BSY); WRITE_REG(FLASH->AR, PageAddress); SET_BIT(FLASH->CR, FLASH_CR_STRT); while (FLASH->SR & FLASH_SR_BSY); CLEAR_BIT(FLASH->CR, FLASH_CR_PER); } /* * Must call this first to enable writing */ void enableEEPROMWriting() { HAL_FLASH_Unlock(); _FLASH_PageErase(EEPROM_START_ADDRESS); } void disableEEPROMWriting() { HAL_FLASH_Lock(); } /* * Writing functions * Must call enableEEPROMWriting() first */ HAL_StatusTypeDef writeEEPROMHalfWord(uint32_t address, uint16_t data) { HAL_StatusTypeDef status; address = address + EEPROM_START_ADDRESS; status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, address, data); return status; } HAL_StatusTypeDef writeEEPROMWord(uint32_t address, uint32_t data) { HAL_StatusTypeDef status; address = address + EEPROM_START_ADDRESS; status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, address, data); return status; } /* * Reading functions */ uint16_t readEEPROMHalfWord(uint32_t address) { uint16_t val = 0; address = address + EEPROM_START_ADDRESS; val = *(__IO uint16_t*)address; return val; } uint32_t readEEPROMWord(uint32_t address) { uint32_t val = 0; address = address + EEPROM_START_ADDRESS; val = *(__IO uint32_t*)address; return val; }