Programming

Hi,
can somebody help me with this one?
I have to configure rs232 write/read inside a C program.
I'm using the termios.h (POSIX)
The problem is that the only baudrate that works for me is 28800 and
it is not supported any more from this driver.
So I can't write :

cfsetispeed(&options, B28800);
cfsetospeed(&options, B28800);

At least for the version of termios.h that I have on my SuSe Linux 10.1
I would really appreciate any help.
Thanks!

You have to use a baud rate that the driver supports. Try B19200. If you are trying to connect to a 28K modem, this should be possible. The modem will use flow control to throttle down the actual transmission rate.

No, it's not a modem. There is a card connected there which is commanding a robot by a wireless connection. I've tried all speeds defined in the termios.h, then I read somewhere in the documentation that the stupid robot is not receiving the command if the speed is other than 28800.
It is working perfectly under Windows. The porblem is that I have to make it also work under linux.
There should be a way to use the speed 28800.

If i recall correctly, and it's a long time since I have done any serial programming on Linux. For the higher baud rates you have to set to B38400 and use setserial to se the actual speed that B38400 runs at.

Yes this was really a nice idea with setserial. I've got this tip already from another thread.
I'll try adding this single line to my Program:

system("/bin/setserial /dev/ttyS1 spd_cust baud_base 115200 divisor 4");

prior to opening the port
and setting the speed like:

cfsetispeed(&options, B38400);
cfsetospeed(&options, B38400);

I really hope it will work.