/**
* @brief Program byte, halfword, word or double word at a specified address with interrupt enabled.
* @param TypeProgram: Indicate the way to program at a specified address.
* This parameter can be a value of @ref FLASH_Type_Program
* @param Address: specifies the address to be programmed.
* @param Data: specifies the data to be programmed
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
{
HAL_StatusTypeDef status = HAL_OK;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Check the parameters */
assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
/* Enable End of FLASH Operation interrupt */
__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP);
/* Enable Error source interrupt */
__HAL_FLASH_ENABLE_IT(FLASH_IT_ERR);
pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM;
pFlash.Address = Address;
if(TypeProgram == FLASH_TYPEPROGRAM_BYTE)
{
/*Program byte (8-bit) at a specified address.*/
FLASH_Program_Byte(Address, (uint8_t) Data);
}
else if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
{
/*Program halfword (16-bit) at a specified address.*/
FLASH_Program_HalfWord(Address, (uint16_t) Data);
}
else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
{
/*Program word (32-bit) at a specified address.*/
FLASH_Program_Word(Address, (uint32_t) Data);
}
else
{
/*Program double word (64-bit) at a specified address.*/
FLASH_Program_DoubleWord(Address, Data);
}
return status;
}
OT_WEAK ot_u8 vprom_write(vaddr addr, ot_u16 value) {
/// 1. Resolve actual address from virtual address -- simple
/// 2. If the address is at the start of the block, erase the block
/// 3. Write the value to the place it must go
#if (VPROM_SIZE <= 0)
return ~0;
#else
static ot_u32 word; // storage for word-write using halfwords
ot_u32 paddr;
FLASH_Status err;
ot_int offset;
err = FLASH_COMPLETE;
paddr = _vprom_base + addr;
// STM32L0 uses 128 byte flash pages. Erase page if on page-start address
if ((paddr & (FLASH_PAGE_SIZE-1)) == 0) {
err = FLASH_Erase_Page(paddr);
}
offset = (paddr & 2);
*(((ot_u8*)&word) + offset) = value;
// Prepare the word and write it, but only when a full word is supplied
// We also do unlocking and locking immediately around the write, because
// there is some importance in protecting flash memory.
if (offset != 0) {
FLASH->PRGKEYR = FLASH_PRGKEY1;
FLASH->PRGKEYR = FLASH_PRGKEY2;
err = FLASH_Program_Word(paddr, word);
FLASH->PECR |= FLASH_PECR_PRGLOCK;
}
return err;
#endif
}