add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# locally computed
sha256  9b0912bf683eb839b6e57c9255c83894c3b700d16489a49d319c54c1abf8f6d7  0.2.9.tar.gz