add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256  56609b82869c80ba71b2a2af166a0bcaffe21e7412f4594e04b9a5abf733435a  tinyhttpd-0.1.0.tar.gz