I am using zigbee.py from the embedded gateway viewer kit and performing socket I/O via an XBIB configured as an API co-ordinator.
When attempting to use select to determine when data is available for reading an exception is generated in zigbee.py/zigbee_select - ‘start_time undefined’. I am not specifying a timeout (4th parameter) and therefore start_time is not initialised. If I do specify a timeout the function seems to go into a tight loop as evident through high CPU usage and never returns.
The offending line is:
time.sleep(min(SELECT_SLEEP_TIME, abs(start_time + timeout - time.time())))
if I modify this to:
It works correctly using the default SELECT_SLEEP_TIME as defined in the function.
I have tested this using the Non Block I/O example from the DIGI Python Programming Guide and can confirm this code fails on a PC host using zigbee.py, but works successfully on an X4 gateway.
Message was edited by: deancs