add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# md5 from https://pypi.python.org/pypi/posix-ipc/json, sha256 locally computed
md5    85607a392087715ac3a3c7ded2492d06  posix_ipc-1.0.0.tar.gz
sha256    9c93070374ca672725575e5c9874930c8cde69367fb90378b2255e048e31efcb  posix_ipc-1.0.0.tar.gz