Accessing GPIOs

patrykz

Hi

I am trying to configure GPIO pins, but I am unable to export them. I followed Pinout_UPSPro instructions, it does not have the Linux GPIO No, but I read that it should be the same as on the Pinout_UP2.
When trying to export pin 13 or pin 15:

echo 432 > export
-bash: echo: write error: Invalid argument

I followed Ubuntu_20.04 system setup and pinctrl-upboard installation.

I am using ubuntu I'm using ubuntu 20.04, kernel 5.4 and pinctrl v1.1.0

Could I ask for some advice what might be the problem?

HarryChiu

Hi Sir

After installed pinctrl.
Please reference this website and try again.
https://github.com/up-board/up-community/wiki/40Pin-Header

Best Regards,
Harry Chiu