I recently bought ODYSSEY X86J4125864 v2 device. I will do a few things about network control through this, I will also use the GPIO pins and control the LEDs I will connect.
I encountered a situation like this. I installed Ubuntu 22.04 yesterday, “echo 337 > export” was not working as described on the web page. I thought it might be due to a kernel change and installed 20.04 LTS today, but it did not help.
echo 338 > The error it gives when I do the export operation is as follows:
“-bash: echo: write error: Invalid argument”
sys/class/gpio folder structure
It looks like. I only need to control 2-3 pieces of 1.5V LEDs. Can you help me on how to do it? It seems that the new cards are not supported. Unfortunately, what worked in older versions does not work now.