#include <libusb.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>

int main()
{
   libusb_init(NULL);
   libusb_device_handle *handle;
   assert(handle = libusb_open_device_with_vid_pid(NULL, 0x0483, 0x5740));
   assert(libusb_claim_interface(handle, 0));

   char request[] = "Test", response[8];
   memset(response, 0, sizeof(response));
   int transferred;

   libusb_bulk_transfer(handle, 0x01, request, sizeof(request), &transferred, 0);
   libusb_bulk_transfer(handle, 0x82, response, sizeof(response), &transferred, 0);

   printf("Response=%s\n", response);

   libusb_close(handle);
}