Flashing a firmware through USB Greetings, So, I am developing a bootloader, that receives a firmware, using a similar protocol to xmodem (128 bytes), through the USB. I followed this tutorial to implement the USB and adapted it to make it work on a B-U585I-IOT02A board. The USB communication works. So I am making something like this (some minor details have been omitted, but the big picture is here): #define APP_START ((uint32_t)0x0800C000
#define OFFSET 128
uint32_t addr = 0;
uint8_t buff[OFFSET] __atribute__((aligned(4))); // 32-bit aligned
int main(void)
{
Flash_Erase(bank, page);
for(;;)
{
if(!lastPacket)
{
GetPacket(&buff);
Flash_Firmware(APP_START+addr, buff);
addr += OFFSET;
}
else
{
Flash_Firmware(APP_START+addr, buff)
break;
}
jumpToApp();
}
static HAL_StatusTypeDef Flash_Erase(uint32_t _bank, uint32_t _page)
{
HAL_StatusTypeDef status = HAL_FLASH_Unlock();
if(status != HAL_OK)
{
return status;
}
FLASH_EraseInitTypeDef erase = {0};
uint32_t PageError = 0;
