Trying to Install mraa packages on armbian OS

Hello everyone, I am beginner to ARMBIAN OS installed on Rock 3A ( 4/64 GB) board. Version of the Armbian OS is " A rmbian_22.08.1_Rock-3a_jammy_edge_5.19.5_xfce_desktop.img.xz " and I’m trying to install basic radxa packages such as mraa, PoE function, etc. But I don’t know how to and where to update the radxa repository on armbian os.

Still I try to update the repository on /etc/apt/source.list.d/armbian.list , but while updating (apt update) it’s throwing an error like “An error occurred during the signature verification”. Please help me to solve this issue.

Note : The motive is I have to work with PoE hat, for that mraa packages are essentials. And also I need to work with UART’s and please let me know how to add those uarts on overlays of armbianEnv.txt.

Could you please help me to install mraa packages on armbian os?

Kindly let me know ASAP.

Thanks !

Github utility is throwing out this error:

Just remove it: sudo rm /etc/apt/sources.list.d/gh*

For GPIO libs on Armbian, check as mraa might not work without adjustments.