On 12/06/2012 02:41 PM, Jean Dubois wrote: > On 6 dec, 15:50, w...@mac.com wrote: >> <snip> >> Sorry about the misunderstanding (and subsequent waste of bandwidth). >> However, if you will look at the serial reads and writes in that handler, >> you will see that it does things like "serial.read(n)" where "n" is an >> explicit number, the number of bytes to be read from the serial buffer. >> >> -Bill > I tried changing measurementcurr=usbkeith.readline() to > measurementcurr=usbkeith.read(10000) > but this leads to trouble with the usbtmc-thing: > > Measured current 1: > Traceback (most recent call last): > File "./keith2200rev2.py", line 26, in <module> > measurementvolt=usbkeith.read(10000) > IOError: [Errno 110] Connection timed out > > and hereafter I need to restart the Keithley...:-( I can't see why you used a count of 10000. Isn't the whole problem supposed to be because it doesn't produce a whole line at a time? So after requesting a measurement, if you know the size, use that in the read() method. And if you don't know the size, read it one byte at a time till it make sense.
-- DaveA -- http://mail.python.org/mailman/listinfo/python-list
