/*
M0 Core Manage USB
*/
int main(void)
{
iap_cmd_res_t iap_cmd_res;
usb_descriptor_serial_number_t serial_number;
airspy_usb_req_init();
usb_set_configuration_changed_cb(usb_configuration_changed);
usb_peripheral_reset();
usb_device_init(0, &usb_device);
usb_queue_init(&usb_endpoint_control_out_queue);
usb_queue_init(&usb_endpoint_control_in_queue);
usb_queue_init(&usb_endpoint_bulk_out_queue);
usb_queue_init(&usb_endpoint_bulk_in_queue);
usb_endpoint_init(&usb_endpoint_control_out);
usb_endpoint_init(&usb_endpoint_control_in);
/* Read IAP Serial Number Identification */
iap_cmd_res.cmd_param.command_code = IAP_CMD_READ_SERIAL_NO;
iap_cmd_call(&iap_cmd_res);
if(iap_cmd_res.status_res.status_ret == CMD_SUCCESS)
{
/* Only retrieve 2 last 32bits for Serial Number */
serial_number.sn_32b[0] = iap_cmd_res.status_res.iap_result[2];
serial_number.sn_32b[1] = iap_cmd_res.status_res.iap_result[3];
usb_descriptor_fill_string_serial_number(serial_number);
}
nvic_set_priority(NVIC_USB0_IRQ, 255);
nvic_set_priority(NVIC_M4CORE_IRQ, 1);
nvic_enable_irq(NVIC_M4CORE_IRQ);
usb_run(&usb_device);
while(true)
{
signal_wfe();
if( (get_usb_buffer_offset() >= 16384) &&
(phase == 1) )
{
usb_transfer_schedule_block(&usb_endpoint_bulk_in, &usb_bulk_buffer[0x0000], 0x4000, NULL, NULL);
phase = 0;
}
if( (get_usb_buffer_offset() < 16384) &&
(phase == 0) )
{
usb_transfer_schedule_block(&usb_endpoint_bulk_in, &usb_bulk_buffer[0x4000], 0x4000, NULL, NULL);
phase = 1;
}
}
}
void usb_set_descriptor_by_serial_number(void)
{
iap_cmd_res_t iap_cmd_res;
/* Read IAP Serial Number Identification */
iap_cmd_res.cmd_param.command_code = IAP_CMD_READ_SERIAL_NO;
iap_cmd_call(&iap_cmd_res);
if (iap_cmd_res.status_res.status_ret == CMD_SUCCESS) {
usb_descriptor_string_serial_number[0] = USB_DESCRIPTOR_STRING_SERIAL_BUF_LEN;
usb_descriptor_string_serial_number[1] = USB_DESCRIPTOR_TYPE_STRING;
/* 32 characters of serial number, convert to UTF-16LE */
for (size_t i=0; i<USB_DESCRIPTOR_STRING_SERIAL_LEN; i++) {
const uint_fast8_t nibble = (iap_cmd_res.status_res.iap_result[i >> 3] >> (28 - (i & 7) * 4)) & 0xf;
const char c = (nibble > 9) ? ('a' + nibble - 10) : ('0' + nibble);
usb_descriptor_string_serial_number[2 + i * 2] = c;
usb_descriptor_string_serial_number[3 + i * 2] = 0x00;
}
} else {
