extern void ser_setbaudrate(struct Serial *port, unsigned long rate);
extern void ser_setparity(struct Serial *port, int parity);
extern void ser_settimeouts(struct Serial *port, time_t rxtimeout, time_t txtimeout);
extern void ser_setbaudrate(struct Serial *port, unsigned long rate);
extern void ser_setparity(struct Serial *port, int parity);
extern void ser_settimeouts(struct Serial *port, time_t rxtimeout, time_t txtimeout);