Issues with MMM-Button

[schlomm]

Hi all,
After using my mirror for some some, I would like to add some custom features using the MMM-Buttons modules, forked / developed by @sdetweil
After downloading and installing the module, pressing a button does not trigger the desired actions.

Instead, some “beautiful” logs are coming after restarting my MagicMirror using pm2:

2025-06-08 00:52:32.659] [ERROR] Whoops! There was an uncaught exception... 
[2025-06-08 00:52:32.667] [ERROR] Error: EINVAL: invalid argument, write
    at Object.writeFileSync (node:fs:2426:20)
    at exportGpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:18:8)
    at new Gpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:172:36)
    at Class.intializeButton (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:74:19)
    at Class.intializeButtons (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:90:18)
    at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:26:18)
    at Socket.<anonymous> (/home/pi/MagicMirror/js/node_helper.js:91:10)
    at Socket.onevent (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:462:26)
    at Socket._onpacket (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:430:22)
    at /home/pi/MagicMirror/node_modules/socket.io/dist/client.js:214:24
    at process.processTicksAndRejections (node:internal/process/task_queues:85:11) {
  errno: -22,
  code: 'EINVAL',
  syscall: 'write'
} 

I’m using the latest MagicMirror release.
Do you have any tips, where I can have a look?

Thanks :)

[sdetweil]

@schlomm the bookworm os requires some configuration for the gpio pins. I think you can do this w raspi-config
Edit: this is not correct, my mistake (Sam)

I am not the author. I just fixed the Postinstall process

[KristjanESPERANTO]

@schlomm Did you try the fork on the module list?
https://github.com/MarcLandis/MMM-Buttons

[schlomm]

@KristjanESPERANTO I set up a fresh MagicMirror instance and checked the https://github.com/MarcLandis/MMM-Buttons repository. As a result I get the same issue:

[2025-06-09 22:57:35.709] [ERROR] Whoops! There was an uncaught exception... 
[2025-06-09 22:57:35.718] [ERROR] Error: EINVAL: invalid argument, write
    at Object.writeFileSync (node:fs:2426:20)
    at exportGpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:18:8)
    at new Gpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:172:36)
    at Class.intializeButton (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:89:19)
    at Class.intializeButtons (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:105:18)
    at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:28:18)
    at Socket.<anonymous> (/home/pi/MagicMirror/js/node_helper.js:91:10)
    at Socket.onevent (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:462:26)
    at Socket._onpacket (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:430:22)
    at /home/pi/MagicMirror/node_modules/socket.io/dist/client.js:214:24
    at process.processTicksAndRejections (node:internal/process/task_queues:85:11) {
  errno: -22,
  code: 'EINVAL',
  syscall: 'write'
}

…Yesterday evening I tried to fix the issue of not beingable to control the MagicMirror using some buttons. Digged into the original module, asked help of ChatGPT, debugged some functions and as a result I have a running version for Bookworm.
I’ll try to put this in a Github Repo - will update this thread as soon as I did :)

@sdetweil You’ve said that I only need to change some settings in the rasp-config. Do you have any additional information what needs to be changed?

[KristjanESPERANTO]

@schlomm There is a PR that seems to fix the issue: https://github.com/MarcLandis/MMM-Buttons/pull/11

[schlomm]

@KristjanESPERANTO Argh…I didn’t see that :-/ Nevermind…at least I’ve learned something about the Module…

[sdetweil]

@schlomm said in Issues with MMM-Button:

@sdetweil You’ve said that I only need to change some settings in the rasp-config. Do you have any additional information what needs to be changed?

I updated my post, I was incorrect