topic Re: Toggle GPIO from S32G2 linux image in S32G

Toggle GPIO from S32G2 linux image

Vishnu3 — Wed, 13 Nov 2024 06:14:44 GMT

Hi all,

I am using the fsl-auto-image and i would like to write a c file which can be used to toggle the LED pins (using libgpiod) on my S32G-VNP development board. Any resources are also fine. I am looking for a basic template snippet, I don't need the whole code as I am fairly new to embedded linux.

I have already taken a look at the GPIO section in the NXP linux BSP 33 pdf but those only show the library APIs that needs to be called from the terminal.

Also, is it just the code or do I have to also make changes in the dts?

@chenyin_h tagging you because you have been always so very helpful.

Best,

Vishnu

Re: Toggle GPIO from S32G2 linux image

chenyin_h — Wed, 13 Nov 2024 10:50:03 GMT

Hello, @Vishnu3

Thanks for your post.

May I know which version BSP you are working with? based on BSP33?

Chenyin

Re: Toggle GPIO from S32G2 linux image

Vishnu3 — Wed, 13 Nov 2024 14:03:19 GMT

Hi Chenyin,

The BSP image I'm using is version 42. I've been referring to the document version 33, since I couldn't find the document for the latest version.

Best,

Vishnu

Re: Toggle GPIO from S32G2 linux image

chenyin_h — Thu, 14 Nov 2024 03:01:44 GMT

Hello, @Vishnu3

Thanks for your reply.

On BSP, the libgpiod-tools is supported, which could be used to control the GPIO from user space. directly execute the command from shell could display and control the GPIO status.

If these commands could not fully fulfill your requirements, I suggest reference the code of libgpiod, to apply your own modification on it if needed.

https://github.com/brgl/libgpiod

Chenyin