unsigned write_flash(unsigned * dst, char * src, unsigned no_of_bytes)
{
unsigned enabled_irqs;
enabled_irqs = NVIC->ISER[0];
if (flash_address == (unsigned *)UPDATE_REQD)
{
/* Store flash start address */
flash_address = (unsigned *)dst;
}
memcpy(&flash_buf[byte_ctr],src,no_of_bytes);
byte_ctr = byte_ctr + no_of_bytes;
if( byte_ctr == FLASH_BUF_SIZE)
{
/* We have accumulated enough bytes to trigger a flash write */
NVIC->ICER[0] = enabled_irqs;
find_erase_prepare_sector(cclk, (unsigned)flash_address);
if(result_table[0] != CMD_SUCCESS)
{
while(1); /* No way to recover. Just let Windows report a write failure */
}
write_data(cclk,(unsigned)flash_address,(unsigned *)flash_buf,FLASH_BUF_SIZE);
if(result_table[0] != CMD_SUCCESS)
{
while(1); /* No way to recover. Just let Windows report a write failure */
}
/* Reset byte counter and flash address */
byte_ctr = 0;
flash_address = (unsigned *)UPDATE_REQD;
}
NVIC->ISER[0] = enabled_irqs;
return(CMD_SUCCESS);
}
unsigned write_flash(unsigned * dst, char * src, unsigned no_of_bytes)
{
unsigned i;
for(i = 0;i<no_of_bytes;i++)
{
flash_buf[(byte_ctr+i)] = *(src+i);
}
byte_ctr = byte_ctr + no_of_bytes;
if(byte_ctr == FLASH_BUF_SIZE)
{
/* We have accumulated enough bytes to trigger a flash write */
find_erase_prepare_sector(SystemCoreClock/1000, (unsigned)dst);
if(result_table[0] != CMD_SUCCESS)
{
DBG("Error: prepare sectors\n");
while(1); /* No way to recover. Just let OS report a write failure */
}
write_data( SystemCoreClock/1000,
(unsigned)dst,
(void *)flash_buf,
FLASH_BUF_SIZE);
if(result_table[0] != CMD_SUCCESS)
{
DBG("Error: writing data\n");
while(1); /* No way to recover. Just let OS report a write failure */
}
compare_data( SystemCoreClock/1000,
(unsigned)dst,
(void *)flash_buf,
FLASH_BUF_SIZE);
if(result_table[0] != CMD_SUCCESS)
{
DBG("Error: verifying data\n");
while(1); /* No way to recover. Just let OS report a write failure */
}
/* Reset byte counter and flash address */
byte_ctr = 0;
dst = 0;
}
return(CMD_SUCCESS);
}