Hello everyone, I want to use uart4 port for zigbee2mqtt,but I don't know how to activates it.

Use armbian-config to enable UART4.

 

 

2 hours ago, Myron said:

Use armbian-config to enable UART4.

 

 

Sorry, I can't find out how to open UART4. This is the screenshot of my Armbian-config, and there is no option of "hardware" in it.  I use the latest version of the system, which can be seen in another screenshot for details. 

 

Hm I though there should be a menu entry called "hardware" to enable various overlays...

Since it is media kernel @balbes150d

Got an idea if overlays are missing or something? Thanks

With the help of my friend, the "hardware" option is now displayed.I haven't checked whether it works correctly.

 

 

 

07.08.2022 в 15:48, Werner сказал:

Hm I though there should be a menu entry called "hardware" to enable various overlays...

Since it is media kernel @balbes150d

Got an idea if overlays are missing or something? Thanks

The overlay works normally in a running system.

See this topic. The kernel already has everything, you only need to add the necessary overlay immediately in a working system.

No complicated steps with old u-boot scripts are needed. You can change everything on the fly in a running system.

https://www.96boards.org/documentation/consumer/dragonboard/dragonboard410c/guides/dt-overlays.md.html#32-loading-overlays-via-configfs

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Can we go back to my question?  How to enable UART4, And get ZigBee2MQtt to use it? 

 

This is related to your question since hw functions are toggled via DTB overlays.