Sun netra 210 Serial port parameters

I wanna use the serial port of sun netra 210 for communication channel
with an external system. However when I look at the documentation, the
communation parameters are 9600, 8, n and they are not changeable.
Does anyone can help me to find a way to change parameters of serial
port programmatically. Further, If it is possible to change
parameters, what is maximum baud rate that the port can communicate?

Best regards

tiran <> wrote:
> I wanna use the serial port of sun netra 210 for communication channel
> with an external system. However when I look at the documentation, the
> communation parameters are 9600, 8, n and they are not changeable.

What documentation is that?

> Does anyone can help me to find a way to change parameters of serial
> port programmatically. Further, If it is possible to change
> parameters, what is maximum baud rate that the port can communicate?

Your application should set the parameters after it opens the port. If
you're using hardware flowcontrol, it should go reasonably fast, but I
haven't worked with netra hardware in a very long time.

--
Darren

On 15 Ekim, 02:50, ddun...@taos.com (Darren Dunham) wrote:
> tiran <dinar.ozt...@gmail.com> wrote:
> > I wanna use the serial port of sun netra 210 for communication channel
> > with an external system. However when I look at the documentation, the
> > communation parameters are 9600, 8, n and they are not changeable.
>
> What documentation is that?
>
> > Does anyone can help me to find a way to change parameters of serial
> > port programmatically. Further, If it is possible to change
> > parameters, what is maximum *baud rate that the port can communicate?
>
> Your application should set the parameters after it opens the port. *If
> you're using hardware flowcontrol, it should go reasonably fast, but I
> haven't worked with netra hardware in a very long time.
>
> --
> Darren

The Documentation is ALOM documentation. In ALOM the commands are used
to just to see the serial port params and it is stated that the params
cannot be changed.

"tiran" <> wrote in message
news:1a6dcb0f-a7b4-4f7c-9c8c-...
> I wanna use the serial port of sun netra 210 for communication channel
> with an external system. However when I look at the documentation, the
> communation parameters are 9600, 8, n and they are not changeable.
> Does anyone can help me to find a way to change parameters of serial
> port programmatically. Further, If it is possible to change
> parameters, what is maximum baud rate that the port can communicate?
>
> Best regards

references:
Stevens, Advance Prog in UNIX Enviro, Chapt 11, pg.563
man pages on termio(7I), termios(3C)

example code snippets that may help:

#include <fcntl.h>
#include <termios.h>

static char *serial_device_names[] = {
"/dev/ttya",
"/dev/ttyb"};
static char *sunSerialPort = "/dev/ttya"; /* default sun serial port */
#define SUN_SERIAL_PORT_BAUD B9600
static int Fd;
struct termios term;

Fd = open(sunSerialPort, O_RDWR)

term.c_cflag = CS8 | /* 8-bit data */
CREAD | /* enable receiver */
CLOCAL; /* ignore modem status lines */
/* no parity, 1 stop bit */
term.c_oflag &= ~OPOST; /* turn off post processing */
term.c_iflag = IXON | IXOFF | /* Xon/Xoff flow control */
IGNBRK; /* ignore breaks */
/* ISTRIP | */ /* strip input to 7 bits */
/* IGNCR; */ /* ignore received CR */
term.c_lflag = 0; /* everything off in local flag:
disables canonical mode, disables
signal generation, disables echo */
term.c_cc[VMIN] = 1; /* 1 byte at a time, no timer */
term.c_cc[VTIME] = 0; /* block reader indefinitely */
cfsetispeed(&term, SUN_SERIAL_PORT_BAUD);
cfsetospeed(&term, SUN_SERIAL_PORT_BAUD);
tcsetattr(Fd, TCSANOW, &term); /* set attributes now */

printf(" execute '/usr/ucb/stty -a > %s' in a shelltool to display serial
port settings.\n", sunSerialPort);

tiran <> wrote:
> The Documentation is ALOM documentation. In ALOM the commands are used
> to just to see the serial port params and it is stated that the params
> cannot be changed.

ALOM is only for communication to the system console. It's not the
general serial port for applications to use on the system.

See the man page for the serial driver on that hardware. (Looking at
the device that /dev/cua/0 points to would be a good hint for the driver
name).

--
Darren