Re: [LHA-misc] Newbie Linux Serial Port Question

[Ben S. <be...@bu...>]

On Sat, 2002-02-02 at 17:00, Lloyd Ferguson wrote:
> I want to control an RS-232 device from my Linux box.  It uses a very 
> simple serial protocol and ideally I would like to write to and read from 
> it in a shell script.
> 
> Can anybody point me to some resources that explain how to access the 
> serial port from shell scripts.  Eventually, I would like to do it in C or 

Sure.

echo "Serial-protocol-commands" >> /dev/ttyS0 

(/dev/ttyS0 is usually serial port 0 under linux)

Also, check out stty, which should allow you to set the attributes of
the serial port.
Eg. To see the current setting of serial port 0, 

stty -F /dev/ttyS0 

To set the speed:

stty -F /dev/ttyS0 speed 38400


> Perl but that is beyond my ability with those languages right now, any 
> pointers to resources on this would be appreciated for future reference.
> 
> Also, can anybody recommend a simple terminal emulator to allow me to 
> communicate with the box directly (something like hyperterm)?  I have tried 
> mgetty and a couple of others but they all seem to want to configure a 
> Hayes modem, and make connections to other machines, maybe I just need some 
> help with configuration.

minicom

> 
> Thanks in advance.
> 
> Lloyd Ferguson
> llo...@us...
> 

Cheers, Ben