UART Not Working on Radxa Zero 3E with Armbian OS

#1

Hello everyone,

I’m using a Radxa Zero 3E with Armbian 24.8.1 Bookworm OS and trying to connect a device to Radxa via UART. However, I can’t seem to find the ttyAML0 interface. The only UART interfaces visible are ttyS1 and ttyFIQ0 , but neither works for my setup. I have connected the device to the UART_AO_A pins (pins 8 and 10).
Additionally, when I go to armbian-config -> System -> Hardware , no hardware appears on the screen.

Could this issue be related to the Armbian image I am using? I’ve already tried the b6 image, but it has a boot problem. I also noticed that the other official Radxa images are marked as pre-release.

Is there a specific image I should use for stable UART functionality, or is there a way to solve this issue on the current setup?

Any guidance on resolving the UART problem would be greatly appreciated!

Thanks in advance for your help!

#2

Hi amazmyh，

Please download the official b6 Debian version, if you download the b6 Ubuntu version there are startup problems.

https://github.com/radxa-build/radxa-zero3/releases/download/b6/radxa-zero3_debian_bullseye_xfce_b6.img.xz

#3

Thank you,
I downloaded it, it works. But why bullseye cli b6 image doesn’t work?

#4

there is an issue preventing the Debian CLI image from booting

1 Like
#5

I have the same problem an year latter … I do t want to use Debian as VPU acceleration better supported in Ubuntu. Keeping this in mind any help will be appreciated