add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256    b769620c1b52d6c1548c6c4f055613f4eee3120ed8a5cff4ba4ffbbc8a582286  bitstring-3.1.5.tar.gz