add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256 aa2a6c4cc6bfacb11e0d9f62334a6638a0d435475c61230116f00b6af8b14fff  tunctl-1.5.tar.gz