if ((ret = ftdi_usb_open(&ftdic, vid, pid)) != 0) {
fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
return ret;
if ((ret = ftdi_usb_open(&ftdic, vid, pid)) != 0) {
fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
return ret;