#include <stdint.h>
#include "tusb.h"

static uint8_t get_unique_id(uint16_t *desc_str)
{
  const uint32_t *idpnt = (uint32_t*)(0x1FFFF7AC); /*DEVICE_ID1*/
  uint32_t tmp = 0;
  uint8_t chr_count = 0;

  for (int digit = 0; digit < 24; digit++)
  {
    if (0 == (digit & 7)) tmp = *idpnt++;
    desc_str[chr_count++] = "0123456789ABCDEF"[tmp & 0xf];
    tmp >>= 4;
  }

  return chr_count;
}