usb_request_status_t usb_vendor_request_write_spiflash(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
uint32_t addr = 0;
uint16_t len = 0;
if (stage == USB_TRANSFER_STAGE_SETUP) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
|| ((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
usb_transfer_schedule_block(endpoint->out, &spiflash_buffer[0], len,
NULL, NULL);
spi_bus_start(spi_flash.bus, &ssp_config_w25q80bv);
w25q80bv_setup(&spi_flash);
return USB_REQUEST_STATUS_OK;
}
} else if (stage == USB_TRANSFER_STAGE_DATA) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
/* This check is redundant but makes me feel better. */
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
|| ((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
w25q80bv_program(&spi_flash, addr, len, &spiflash_buffer[0]);
usb_transfer_schedule_ack(endpoint->in);
return USB_REQUEST_STATUS_OK;
}
} else {
return USB_REQUEST_STATUS_OK;
}
}
int main(void)
{
int i;
uint8_t buf[515];
pin_setup();
enable_1v8_power();
cpu_clock_init();
/* program test data to SPI flash */
for (i = 0; i < 515; i++)
buf[i] = (i * 3) & 0xFF;
w25q80bv_setup();
w25q80bv_chip_erase();
w25q80bv_program(790, 515, &buf[0]);
/* blink LED1 and LED3 */
while (1)
{
gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED3)); /* LEDs on */
for (i = 0; i < 8000000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED3)); /* LED off */
for (i = 0; i < 8000000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}
usb_request_status_t usb_vendor_request_erase_spiflash(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
spi_bus_start(spi_flash.bus, &ssp_config_w25q80bv);
w25q80bv_setup(&spi_flash);
/* only chip erase is implemented */
w25q80bv_chip_erase(&spi_flash);
usb_transfer_schedule_ack(endpoint->in);
}
return USB_REQUEST_STATUS_OK;
}
isp_iap_ret_code_t iap_cmd_call(iap_cmd_res_t* iap_cmd_res)
{
uint32_t* p_u32_data;
if( iap_is_implemented() )
{
pROM_API->IAP( (uint32_t*)&iap_cmd_res->cmd_param, (uint32_t*)&iap_cmd_res->status_res);
}else
{
/*
Alternative way to retrieve Part Id on MCU with no IAP
Read Serial No => Read Unique ID in SPIFI (only compatible with W25Q80BV)
*/
w25q80bv_setup();
switch(iap_cmd_res->cmd_param.command_code)
{
case IAP_CMD_READ_PART_ID_NO:
p_u32_data = (uint32_t*)CHIP_PART_ID;
iap_cmd_res->status_res.iap_result[0] = p_u32_data[0];
p_u32_data = (uint32_t*)ROM_OTP_PART_ID_ADDR;
iap_cmd_res->status_res.iap_result[1] = p_u32_data[0];
iap_cmd_res->status_res.status_ret = CMD_SUCCESS;
break;
case IAP_CMD_READ_SERIAL_NO:
/* Only 64bits used */
iap_cmd_res->status_res.iap_result[0] = 0;
iap_cmd_res->status_res.iap_result[1] = 0;
w25q80bv_get_unique_id( (w25q80bv_unique_id_t*)&iap_cmd_res->status_res.iap_result[2] );
iap_cmd_res->status_res.status_ret = CMD_SUCCESS;
break;
default:
iap_cmd_res->status_res.status_ret = ERROR_IAP_NOT_IMPLEMENTED;
break;
}
}
return iap_cmd_res->status_res.status_ret;
}
