Correct UART reads to return error on timeout.#928
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dhalbert merged 1 commit intoadafruit:masterfrom Jun 12, 2018
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This causes read to correctly return None instead of b''. Fixes micropython#874
dhalbert
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Jun 12, 2018
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Yay! Tested on M0:
>>> import board, busio
>>> u = busio.UART(board.TX, board.RX)
>>> print(u.read(3))
None
>>> print(u.read(0))
b''
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This causes read to correctly return None instead of b''.
Fixes #874