send_to_tty
send_to_tty(garmin_data_p->port, data,
send_to_tty(garmin_data_p->port, pkt->data, pkt->size);
send_to_tty(garmin_data_p->port, pkt, l);
send_to_tty(garmin_data_p->port, garmin_data_p->outbuffer, i);
send_to_tty(port, (__u8 *)pkt, 6 * 4);