add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally calculated
sha256 4b18804f489834fa953f4af887290173c745b471a5993bb108a9142c867de457 riemann-c-client-1.9.1.tar.xz