HassOS Serial Configurator
Enables the Raspberry Pi Serial Port in Host Mode. You can connect an SDCard and up to two hard disks or USB drives, which are detected as sda or sdb, and they will all have Host-Mode Serial enabled when you click start.
This project is a part of my HassOS Configurator project. The goal of this add-on, similar to root apps on Android, is to make a mole-hill out of a mountain.
Within Home Assistant, click Supervisor-> Add-on Store → … button (in top left)-> Repositories. Add this repository.
Click “HassOS Serial Configurator”, then install.
Be sure to disable Protection Mode. There is no other configuration. This will enable Host-Mode serial on mmcblk0p1, sda1, and sdb1
Hit the start button and observe the logs. You may uninstall the Add-On when complete.