Re: serial connexion between 2 machines failed

[Hartwig Atrops <Hartwig.Atrops@arcor.de>]

Hi.

On Tuesday 24 July 2012 16:41:57 abdelkader belahcene wrote:
> Hi,
> I wrote 2 programs in C  to read from  a serial port and to write in.
>
> When I used  one machine,  nullmodem ( output and input) the program ran
> correcly,  I wrote caracteres then I read them from the same port. ttyS0
> for example.
>
> they ran correctly   when I used a machine with 2 serial ports ttyS0 and
> ttyS1,  so I send  from one port to another.
>
> When I tried  the same programs   from one machine using   a crossed  cable
> ( This is what I have to done  the output of one machine is an input for
> the other),  it failed  I have to wait very long time, may be for ever !!!!

Usually, nullmodem cable is what you need. Maybee wrong baud rate or something 
like that?

> I remember  I didn't once or twice yesterday,  but after that no
> connection. Is there a special configuration, activation  or else ???

In order to check the connection, I probably would start a serial console on 
one of the machines and minicom on the other...

> (on both machines I am using linuxMint, is there  any relation  with the
> distro ??)

I don't think so.

> thanks a lot
>
> regards bela

You're welcome,

   Hartwig