[time-nuts] Prologix, Linux and bash

Jeff Mock jeff at mock.com
Wed Jan 16 15:38:46 EST 2008

I have excellent luck using a Prologix device on a couple of different 
machines running ubuntu linux (7.04 and 7.10).   I find it totally painless.

You might run usbview and see if the device is being recognized or look 
at /var/log/messages while plugging in the device.  Something like:

    % sudo tail -f /var/log/messages

You should see the device get recognized and a message telling you what 
device it is assigned to.

I use the ser2net daemon with the prologix device.  This acts as a proxy 
  for accessing serial devices over the network.  This way you can 
telnet to the GPIB device from the local machine or over the network. 
This makes it really convenient to access GPIB devices over the local 

As far as programming the GPIB devices, I use perl, it's a lot cleaner 
than a bunch of crazy echo commands in a bash script.  The Telnet module 
in perl makes it easy to access the ser2net proxy to the GPIB device.

There are a lot of different ways to do it, but that's what works best 
for me.


Patrick wrote:
> Hi Everyone
> I know that my Prologix device is functioning thanks to Ulrich's EZGPIB.
> I however want to use this device under Linux. My Ubuntu box cannot find 
> /dev/ttyUSB0 but a Mepis Linux live CD can.
> I have tried the following commands:
> echo ++auto 0 CR > /dev/ttyUSB0
> echo ++auto 1 CR > /dev/ttyUSB0
> echo ++auto 0 \r > /dev/ttyUSB0
> echo ++auto 1 \r > /dev/ttyUSB0
> echo ++auto 0 \n > /dev/ttyUSB0
> echo ++auto 1 \n > /dev/ttyUSB0
> echo ++auto 0 \r\n > /dev/ttyUSB0
> echo ++auto 1 \r\n > /dev/ttyUSB0
> I have not been able to switch the led on from talk to listen.
> Could someone give me a bash sample of the correct syntax to use?
> Thanks in advance-Patrick
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