Hi everyone.


I'm having some troubles with the configuration of the serial port, I'm traying to communicate two machines (one with winxp and the other with slackware) when I set up the communication at 1200, 7, even parity and one(1) stop bits it works fine sending. The setup in linux is this
I receive in a HyperTerminal (winXP) set up as 1200b, 7bits, parity even and one stop bit. testing

But when I try to read data using
And send data using an app in vbasic set up with the same parameters, it doesn't read anything, I tried with another linux machine and I received everything from the linux machine using the cat /dev/ttyS0 command.

Does any body knows how to set the serial port at 1200, 7 bits, one stop bit and even parity in oder to read the data sent from a xp machine?

Thanks
Mario

If you are using the stty command to change the characteristics of a TTY then ensure:

- the TTY device is open before running the stty command. If you cannot then run some other process against the port ... like sleep 9999999 > /dev/ttyS0 &

- stty 1200 cs7 -parodd -cstopb < /dev/ttyS0

- run stty -a < /dev/ttyS0 to verify

Still can't read it, I type cat /dev/ttyS0 and echo "dfkjl" > /dev/ttyS0 from another machine and can read it but from the vb application can't read anything but I can send.

I guess something is missing in the set up

Mario

Found the problem but not yet the solution.

Seems like the application is sending as carriage return key the charactarer 20 (¶) but the data is the bufer
do u know how to disable carriage validation or charge the carriage char?

Hex character 20 = Space

Hex character 0D = CR

The data should have been sent.
Does the same problem happen with Hyperterminal ??

No not all but in WinNT long time ago I had the same problem.
The point is that when I send manually the return key the data shows up.

Now I can confirm that the data is at the buffer; Is there any way to change the carriage return or set up to print data asumming char 20 as return or print data without waiting the carriage return?