add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# locally computed
sha256  9e7f72fbea7bd918e71212a1eabaad8488d2c602205d2e3c95d62cd57e9203ef  latencytop-0.5.tar.gz