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STM32f103 —— 内部flash读写
發布時間：2023/12/20
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STM32f103 —— 内部flash读写
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#ifndef _MCU_FLASH_H_
#define _MCU_FLASH_H_#include <stdint.h>// STM32f103C8T6 64KB FLASH，20KB RAM，1個扇區1KB,程序起始0x8000000
#define FLASH_START_ADDR ((uint32_t)0x8000000)
#define FLASH_END_ADDR ((uint32_t)(0x8000000 + FLASH_SECTOR_NUM * FLASH_SECTOR_SIZE))
#define FLASH_SECTOR_NUM 128 // 扇區數量
#define FLASH_SECTOR_SIZE 1024 // 扇區大小1KBtypedef enum
{ FLASH_FAILURE = 0,FLASH_SUCCESS,
} flash_status_t;//===========================================================================
flash_status_t FlashErase(uint32_t addr, uint8_t count);
uint32_t FlashWrite(uint32_t addr, uint8_t *buffer, uint32_t length);
uint32_t FlashRead(uint32_t addr, uint8_t *buffer, uint32_t length);#endif /* _MCU_FLASH_H_ */
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#include "mcu_flash.h" #include <string.h> #include "stm32f10x_flash.h"// addr:地址 count:塊數量 flash_status_t FlashErase(uint32_t addr, uint8_t count) {uint8_t i;FLASH_Unlock();FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);for(i = 0; i < count; ++i){if(FLASH_ErasePage(addr + i * FLASH_SECTOR_SIZE) != FLASH_COMPLETE){return FLASH_FAILURE;}}FLASH_Lock();return FLASH_SUCCESS; }uint32_t FlashWrite(uint32_t addr, uint8_t *buffer, uint32_t length) {uint16_t i, data = 0;FLASH_Unlock();FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);for(i = 0; i < length; i += 2){data = (*(buffer + i + 1) << 8) + (*(buffer + i));if(FLASH_ProgramHalfWord((uint32_t)(addr + i), data) != FLASH_COMPLETE){return i;}}FLASH_Lock();return length; }uint32_t FlashRead(uint32_t addr, uint8_t *buffer, uint32_t length) {memcpy(buffer, (void *)addr, length);return length; }?
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