Re: Serial comm program

[Ron Peterson <rpeterso@mtholyoke.edu>]

On Wed, Aug 10, 2005 at 11:50:55AM -0400, rpeterso wrote:

> Are you familiar with 'screen'?

BTW, you can do serial stuff w/ screen directly, if you like.  E.g.:

1017# cat /local/etc/screenrc.serial
# This assumes that serialuser has proper
# permissions to access the serial ports and to
# write to the log files specified in the screenrc.
# turn logging on for all windows
deflog on
# tell screen to log to /var/log/serial.$WINDOW
logfile /var/log/serial.%n
# open windows on the serial ports
screen -t ttyS0 /dev/ttyS0 38400
screen -t ttyS1 /dev/ttyS1 19200
screen -t USB0 /dev/ttyUSB0 38400
screen -t USB1 /dev/ttyUSB1 38400
screen -t USB2 /dev/ttyUSB1 38400
screen -t USB3 /dev/ttyUSB1 38400

# if you like, launch at system startup rc script like:
# su serialuser -c 'screen -dmS serial -c /local/etc/screenrc.serial'

escape ^Tt

The 'su ..' startup line above would launch screen using the specified
config file, and put it in detached mode.  Then you could log in and
attach at any time by running 'screen -r serial'.  Otherwise just
'screen -c <conffile>'

I haven't done much serial stuff w/ screen myself, not sure how you set
parity bits etc., but it's an interesting approach in any case..

-- 
Ron Peterson
Network & Systems Manager
Mount Holyoke College
http://www.mtholyoke.edu/~rpeterso