Having GPIO issues

It seems like my Jetson nano module is having issues communicating with the carrier board.

Someone (not me) carelessly plugged in an external 5V 2A power supply to a +5V gpio out pin on the jetson nano.

The system instantly crashed and powered off.

I was able to boot up again, but now the GPIO is not functioning and I am getting warning that carrier board is not recoginzed when importing Jetson.GPIO

$ ls -l /proc/device-tree/chosen/plugin-manager/ids
total 0
-r–r--r-- 1 root root 26 Feb 25 10:38 3448-0000-200
drwxr-xr-x 3 root root 0 Feb 25 10:38 connection
-r–r--r-- 1 root root 4 Feb 25 10:38 name

$ cat /etc/nv_tegra_release
R32 (release), REVISION: 3.1, GCID: 18186506, BOARD: t210ref, EABI: aarch64, DATE: Tue Dec 10 06:58:34 UTC 2019

However, my USB works, my camera works, HDMI works. It seems like only GPIO is not working.

Also worth noting, my carrier board only has one slot for MIPI camera. I noticed the picture on the website has two lots for MIPI camera. Could this be causing the issue?

Do I have an older carrier board?

Hi navyjosh,

For one slot camera connector board is Developer kit carrier boards: rev A02
For two slot camera connector board is Developer kit module and carrier board: rev B01

List our A02 board with r32.3.1 result:

$ ls -l /proc/device-tree/chosen/plugin-manager/ids/
total 0
-r--r--r-- 1 root root 26  二  25 10:49 3448-0000-200
-r--r--r-- 1 root root 26  二  25 10:49 3449-0000-200
drwxr-xr-x 3 root root  0  二  25 10:49 connection
-r--r--r-- 1 root root  4  二  25 10:49 name

If you miss “3449” there, it probably means only the carrier board is broken.