On 10/03/2013 08:11:02 AM, ranzam ali wrote: > while True: > > #\r\n is for device terminators set to CR LF > ser.write(bytes(':FETCh?\r\n', encoding='ascii'))
did you want that lowercase 'h'? if so, try sending a few crlf first? just guessing. ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users