STM32 L0 的EEPROM 的读写函数为什么写不进去啊？

1万 · 2020-10-11 22:50

#define EEPROM_BASE_ADDR       0x08000000
#define EEPROM_BYTE_SIZE       0x0800  //¶¨ÒåEEPROMµÄÆðÊ¼Î»ÖÃºÍ´óÐ¡
#define PEKEY1       0x89ABCDEF             //FLASH_PEKEYR
#define PEKEY2       0x02030405             //FLASH_PEKEYR ½âËøÃüÁî
#define EN_INT             __enable_irq();       //ÏµÍ³¿ª¾ÖÖÐ¶Ï
#define DIS_INT          __disable_irq();       //ÏµÍ³¹Ø±ÕÈ«¾Ö

void EEPROM_ReadBytes(unsigned int Addr,char *Buffer, short Length)//°´ÕÕ×Ö½Ú¶Á³öEEPROMµÄÊý¾Ý
{
      char *wAddr;
      wAddr=(char *)(EEPROM_BASE_ADDR+Addr);
      while(Length--)
      {
               *Buffer++=*wAddr++;
      }
}

void EEPROM_WriteBytes(unsigned int Addr,char *Buffer,short Length)//°´ÕÕ×Ö½ÚÊý¾ÝÐ´µ½EEPROM
{
      char *wAddr;
      wAddr=(char *)(EEPROM_BASE_ADDR+Addr);
      DIS_INT
      FLASH->PEKEYR=PEKEY1;                   //unlock
      FLASH->PEKEYR=PEKEY2;
      while(Length--)
      {
            *wAddr++=*Buffer++;
            while(FLASH->SR&FLASH_SR_BSY);
      }
      FLASH->PECR|=FLASH_PECR_PELOCK;
      EN_INT
}
为什么写不进去啊？

2万 · 2020-10-11 22:53

EEPROM的基地址好像不对，你查下datasheet看看吧

2万 · 2020-10-11 22:58

/*------------------------------------------------------------
Func: EEPROM  Read
Note:
-------------------------------------------------------------*/
void EEPROM_Read(uint16_t Addr,uint8_t *Buffer,uint16_t Length)
{
uint8_t *wAddr;
            HAL_FLASHEx_DATAEEPROM_Unlock();
wAddr=(uint8_t *)(DATA_EEPROM_BASE+Addr);
while(Length--){
      *Buffer++=*wAddr++;
            HAL_FLASHEx_DATAEEPROM_Lock();
}
}

/*------------------------------------------------------------
Func: EEPROM Write
Note:
-------------------------------------------------------------*/
void EEPROM_Write(uint16_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite)
{
uint16_t t;
HAL_FLASHEx_DATAEEPROM_Unlock();
for(t = 0;t < NumToWrite;t++)
{
      HAL_FLASHEx_DATAEEPROM_Program(FLASH_TYPEPROGRAMDATA_BYTE,DATA_EEPROM_BASE + WriteAddr + t,*(pBuffer + t));
}
HAL_FLASHEx_DATAEEPROM_Unlock();
}