Digital Reads Return `None`

When I did this on an Arduino Uno:

>>> board.digital[3].mode = INPUT
>>> board.digltal[3].enable_reporting() # Not sure why this has to be an explicit method call
>>> print(board.digital[3].read())           # Return None most of the time

The last statement return None most of the time. It did work sometime, returning True on an open switch and False on closed. However, I had to explicitly start a thread with

>>> thread = util.Iterator(board)
>>> thread.start()

And with that it still returned None very often.

[Vladivarius]

I also had this problem and solved it by adding some delay after starting the iterator thread. Some time is probably needed for the serial communication to be initialized propertly. 10ms is enough.

board = Arduino('COM5')
BTN = board.get_pin('d:10:i')
thread = util.Iterator(board)
thread.start()
sleep(0.01)
print(BTN.read())

[jochasinga]

@tino well that makes sense. I’m closing this issue for now unless someone reopen again.