Couldn't get GPIO Controller Service to work

[mark]

Hello, I'm a bit stumped at the moment. I'm currently trying to map three buttons for scrolling and the enter key for CarPlay. I've tried following the information here:

https://bluewavestudio.io/community/show...p?tid=2208

However, I couldn't get it to work. I've tried using GPIO pins 20, 21 and 26 for 1, 2 and Enter keys respectively but nothing is happening when I try to use them. I got rid of my power management HAT which doesn't even use those GPIO pins and it still doesn't work.

This is how I have the config .ini file set up:
   

And this is how I have the autostart file set up:
   

Is there anything here that I've missed out or have done incorrectly? I'm trying not to use a Teensy/Arduino now due to space constraints as I'm mounting this OAP solution on my motorbike.

[BlueWave]

One instance of the controller_service is always run by default with the .openauto/config/openauto_controller_service.ini. Just remove last line you added to the autostart file.

Please also post your wiring diagram.

[mark]

One instance of the controller_service is always run by default with the .openauto/config/openauto_controller_service.ini. Just remove last line you added to the autostart file.

Please also post your wiring diagram.

I’ll try removing that line later.

Also I don’t exactly have a wiring diagram but I have been testing the circuit by jumping pin 39 (GND) with pins 37 (GPIO 26), 38 (GPIO 20) and 40 (GPIO 21) of my Pi 3B+.

And I am now even more confused because I’m not sure which GPIO naming convention this script uses, for example the GPIO by name and BCM GPIO are different!

[Kleekru]

Just so I'm certain, can someone please comment on whether I should be using GPIO pin or BCM pin for GPIO controller service?

[Weagle]

for buttons you don't really need a script to use them, just use dtoverlay gpio keys.

for each button put the line
dtoverlay=gpio-key,gpio=your GPIO-Pin,keycode=keyboardcode,label="just any name you prefer",gpio_pull=2
in your /boot/config.txt.

keycodes:
1 = ESC
2 = 1
3 = 2
28 = Enter

More key codes here: https://github.com/torvalds/linux/blob/m...nt-codes.h

if its not working try playing around with the "gpio_pull" setting. 0=none 1=pull down 2=pull up

this won't work with rotary encoders. if you or someone else needs a script for them just message me.