how to Activates UART4

[QAZZ]

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

[Myron]

Use armbian-config to enable UART4.

 

 

[QAZZ]

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. 

 

[Werner]

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

[QAZZ]

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

 

 

 

[balbes150]

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

[QAZZ]

Quote

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

 

[Werner]

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