add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# md5 from https://pypi.python.org/pypi/pyzmq/json, sha256 locally computed
md5  9a8768b00a566a400d70318f8c359cfe  pyzmq-16.0.2.tar.gz
sha256  0322543fff5ab6f87d11a8a099c4c07dd8a1719040084b6ce9162bcdf5c45c9d  pyzmq-16.0.2.tar.gz