add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# locally computed
sha256  2cfeb6a9236e1a743c8010f05e504dbc92169ef42d9a6cf7948954a577bfc386  DataflashBoot-1.05.tar.bz2