Chad Simpson wrote:
I'm looking for something that I can write python or tcl or shell scripts
for and send strings to a GPIB device, and get strings back. I'm trying to
get away from the LabView .vi model. So, this looks fairly good, that way.
Jim
Yes, me too - shell or python would be great, I'm presently learning the
latter. I just found PyVISA, which looks like it might be useful, possibly
pythonlabtools as well.
Then you should like the prologix usb adapter. It took me maybe a half hour
to write an interface to it in python, and then I was up and running.
A simple example:
-------------------------
#! /usr/bin/env python
# 7854.py - try out some gpib data collection using the Prologix
gpib-usb controller
#
import os
import termios
import serial
import time
def gpib_init() :
ser.write("++mode 1\r")
time.sleep(0.1)
ser.write("++ifc\r")
time.sleep(0.1)
ser.write("++auto 0\r")
time.sleep(0.1)
ser.write("++eoi 0\r")
time.sleep(0.1)
def gpib_read(addr):
ser.write("++addr " + str(addr) + "\r")
time.sleep(0.1)
ser.write("++read eoi\r")
return ser.readline()
def gpib_write(addr,gpibstr):
ser.write("++addr " + str(addr) + "\r")
time.sleep(0.1)
ser.write(gpibstr + "\r")
ser = serial.Serial('/dev/ttyUSB0',rtscts=0,timeout=1)
ser.write("++ver\r")
print ser.readline()
gpib_init()
gpib_write(10,"ID?\r")
print "ID= " + gpib_read(10) + "\r"
gpib_write(10,"VMDR\r")
gpib_write(10,"HMDB\r")
gpib_write(10,"1 0 2 4 >P/W AVG10\r")
gpib_read(10)
gpib_write(10,"SENDX\r")
time.sleep(4)
print "X=" + gpib_read(10) + "\r"
print "X=" + gpib_read(10) + "\r"
-------------------------
-Chuck Harris
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