/**
* Write one page to flash
*
* \param addr Flash address in bytes
* \param data Source data buffer
*
* \return true if success.
*/
bool mem_flash_page_write(void *addr, void *data)
{
uint32_t rc = FLASH_RC_OK;
mem_flash_op_enter();
#if SAM4S || SAM4E || SAM4N
/* The EWP command can only be used in 8 KBytes sector for SAM4S, SAM4E
* and SAM4N, so an erase command is requried before write operation.
*/
rc = flash_write((uint32_t)addr, data, IFLASH_PAGE_SIZE, false);
#else
rc = flash_write((uint32_t)addr, data, IFLASH_PAGE_SIZE, true);
#endif
mem_flash_op_exit();
if (FLASH_RC_OK != rc) {
return false;
}
return true;
}
OSStatus internalFlashWrite(volatile uint32_t* flash_address, uint32_t* data ,uint32_t data_length)
{
platform_log_trace();
OSStatus err = kNoErr;
//page write length IFLASH_PAGE_SIZE
uint32_t rc ;
mem_flash_op_enter();
#if SAMG55
rc = flash_write((*flash_address), data, data_length, false);
#else
rc = flash_write((*flash_address), data, data_length, true);
#endif
mem_flash_op_exit();
if (rc != FLASH_RC_OK) {
platform_log("flash err: %d",rc);
return kGeneralErr;
}
*flash_address += data_length;
exit:
return err;
}
/**
* Unlock flash region
*
* \param start Start physical address
* \param end End physical address
*
* \return true if success
*/
bool mem_flash_unlock(void *start, void* end)
{
uint32_t rc;
uint32_t start_addr = (uint32_t)start;
uint32_t end_addr = (uint32_t)end;
if (start_addr < IFLASH_ADDR) {
start_addr = IFLASH_ADDR;
}
if (end_addr > IFLASH_END || end_addr == 0) {
end_addr = IFLASH_END;
}
if (start_addr >= end_addr) {
return false;
}
mem_flash_op_enter();
rc = flash_unlock(start_addr, end_addr, NULL, NULL);
mem_flash_op_exit();
if (rc) {
return false;
}
return true;
}
