uint32_t write_to_flash(uint8_t * buf, uint16_t length){
if((length)>2047) return 0xFFFFFFFF;
uint32_t base_addr=0;
base_addr=getHexAddressPage(DATA_PAGE);
uint32_t PAGEError;
/* Unlock the Flash to enable the flash control register access *************/
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_PROGERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_SIZERR | FLASH_FLAG_PGSERR | FLASH_FLAG_MISERR | FLASH_FLAG_FASTERR | FLASH_FLAG_OPTVERR);
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
/* Erase the user Flash area*/
/* Fill EraseInit structure*/
EraseInitStruct.TypeErase= FLASH_TYPEERASE_PAGES;
EraseInitStruct.Page = DATA_PAGE;
EraseInitStruct.NbPages= 1;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
{
DBGx("Flash Erase Fail\r\n");
HAL_FLASH_Lock();
return HAL_FLASH_GetError();
}
for (uint32_t i = 0; i < length; i += 8)
{
uint64_t data64 = u8touint64(buf+i);
PAGEError=HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, i + base_addr, data64);
if (PAGEError != HAL_OK)
{
HAL_FLASH_Lock();
DBGx("2 IS_FLASH_PAGE(Page):%d at mem:%x,PAGEError:%x\r\n",IS_FLASH_PAGE(DATA_PAGE),DATA_PAGE,PAGEError);
return PAGEError;
}
}
HAL_FLASH_Lock();
DBGx("Flash Error:%d\r\n",PAGEError);
return PAGEError;
}
Above code is used to write flash
