No gpio on BPI M4-zero

[jrtaylor]

Looking at the new BPI M4 zero to replace a RPI zero. The official build listed does not have gpio turned or maybe just not built into the kernel. If I download the image from the BPI website it has it but it based on bullseye and the image is broke. I built my own image but still no go so I am not sure what is wrong. I have built images for other boards and projects with success so that's not the problem.

 

I have a 3.5" TFT touch screen and some relays that I need to run along with a sensor.

[c0rnelius]

I suggest looking over the overlays available; https://github.com/BPI-SINOVOIP/pi-linux/tree/pi-6.1-sunxi/arch/arm64/boot/dts/allwinner/overlay

 

They may or maynot need to be edited as BSP VS MAINLINE usually isn't identical. 

[iGNUiCould]

If this is still an issue for anyone, I forked into a repo that is modified to work exclusively with the M4 Zero. Confirmed working on the M4 Zero 4G / 32G model. Should work on other M4 Zero variants as long as the pins are the same. 

 

https://github.com/ignuicould/WiringBPi-M4Zero

 

I also have pascal bindings for fpc / Lazarus if anyone is interested.

[Igor]

15 hours ago, iGNUiCould said:

I forked into a repo that is modified to work exclusively with the M4 Zero.

 

Take a look at universal projects that are made far better, and are universal by design.
https://forum.armbian.com/forum/40-reviews-tutorials-hardware-hacks/ (pinned topics)