/**
* @brief Programs a memory block
* @note This function should be called and executed from RAM.
* @param FLASH_MemType : The type of memory to program
* @param BlockNum : The block number
* @param FLASH_ProgMode : The programming mode.
* @param Buffer : Pointer to buffer containing source data.
* @retval None.
*/
IN_RAM(void FLASH_ProgramBlock(uint16_t BlockNum, FLASH_MemType_TypeDef FLASH_MemType,
FLASH_ProgramMode_TypeDef FLASH_ProgMode, uint8_t *Buffer))
{
uint16_t Count = 0;
uint32_t startaddress = 0;
/* Check parameters */
assert_param(IS_MEMORY_TYPE_OK(FLASH_MemType));
assert_param(IS_FLASH_PROGRAM_MODE_OK(FLASH_ProgMode));
if (FLASH_MemType == FLASH_MEMTYPE_PROG)
{
assert_param(IS_FLASH_PROG_BLOCK_NUMBER_OK(BlockNum));
startaddress = FLASH_PROG_START_PHYSICAL_ADDRESS;
}
else
{
assert_param(IS_FLASH_DATA_BLOCK_NUMBER_OK(BlockNum));
startaddress = FLASH_DATA_START_PHYSICAL_ADDRESS;
}
/* Point to the first block address */
startaddress = startaddress + ((uint32_t)BlockNum * FLASH_BLOCK_SIZE);
/* Selection of Standard or Fast programming mode */
if (FLASH_ProgMode == FLASH_PROGRAMMODE_STANDARD)
{
/* Standard programming mode */ /*No need in standard mode */
FLASH->CR2 |= FLASH_CR2_PRG;
FLASH->NCR2 &= (uint8_t)(~FLASH_NCR2_NPRG);
}
else
{
/* Fast programming mode */
FLASH->CR2 |= FLASH_CR2_FPRG;
FLASH->NCR2 &= (uint8_t)(~FLASH_NCR2_NFPRG);
}
/* Copy data bytes from RAM to FLASH memory */
for (Count = 0; Count < FLASH_BLOCK_SIZE; Count++)
{
*((PointerAttr uint8_t*) (uint16_t)startaddress + Count) = ((uint8_t)(Buffer[Count]));
}
}
这不还是字节写吗!? |