101 int tty_set(
int fd, 
int rts, 
int dtr);
 int tty_setrtscts(int fd, int enable)
Set/clear CTS control line. 
int tty_setdtr(int fd, int enable)
Set/clear DTR control line. 
int tty_delete_lock(void)
Delete any legacy lock(s) owned by this process. 
int tty_reset(int fd)
Set the cfmakeraw termio options. 
int tty_create_lock(const char *name)
Creates a lock file of the type /var/local/LCK. 
int tty_write(int fd, char byte)
Write a single byte to serial device. 
int tty_clear(int fd, int rts, int dtr)
Clear RTS and DTR control lines. 
int tty_setcsize(int fd, int csize)
Set the character size. 
int tty_write_echo(int fd, char byte)
Write a single byte and check the echo from remote party. 
int tty_read(int fd, char *byte)
Read a single byte from serial device. 
int tty_setbaud(int fd, int baud)
Set the speed a. 
int tty_set(int fd, int rts, int dtr)
Set RTS and DTR control lines.