add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# md5 from https://pypi.python.org/pypi/xlwt/json, sha256 locally computed
md5 1f2673a93c221f0195f342c578f04968 xlwt-1.2.0.tar.gz
sha256 505669c1eb6a60823fd3e2e723b60eea95f2c56254113bf163091ed2bedb4ac9 xlwt-1.2.0.tar.gz