Frederic Wenzel wrote: > On 9/9/06, Hendrik van Rooyen <[EMAIL PROTECTED]> wrote: > >>| I wrote a script on Linux that uses pyserial to read status messages >>| from a serial line using readlines(). For now, it just displays what >>| it gets on stdout: >>| (...) >>| ser = serial.Serial(port=1, >>| baudrate=1200, >>| rtscts=1, >> >>if this is enabling hardware flow control try turning it off - at 1200 baud >>you >>should not need it > > > Okay I disabled this for once. > > >>| >>| If the script does not time out there, I am not sure what else it is >>| doing. It seems to be in a wait state it does not get out of. >> >>Sounds more and more like flow control hassle - can you lay your hands on a >>break out box or a datascope? > > > Unfortunately not. I will run a few more tests without rtscts though. > > I am actually not horribly worried about kicking the serial reading > service every once in a while, but it would be better if it detected > the "stall" state itself... > You could maybe have another program monitoring it - I seem to remember the APSN database holding a UDP heartbeat program that might be readily adaptable. No time to Goog^w use a popular search engine to look for it just now, but you should have all the keywords ...
regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
