GPIO pins can not be used (onoff module fails) #9
Description
Using Raspberry 4b on GPIO pins 5 and 25.
But the logs list me errors related to your module. Can you tell me why / how to fix that?
[2025-02-05 20:18:28.083] [31m[ERROR][39m [31mWhoops! There was an uncaught exception...[39m
[2025-02-05 20:18:28.111] [31m[ERROR][39m [31mError: EINVAL: invalid argument, write[39m
[31m at Object.writeFileSync (node:fs:2367:20)[39m
[31m at exportGpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:18:8)[39m
[31m at new Gpio (/home/pi/MagicMirror/modules/MMM-Buttons/node_modules/onoff/onoff.js:172:36)[39m
[31m at Class.intializeButton (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:89:19)[39m
[31m at Class.intializeButtons (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:105:18)[39m
[31m at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-Buttons/node_helper.js:28:18)[39m
[31m at Socket.<anonymous> (/home/pi/MagicMirror/js/node_helper.js:91:10)[39m
[31m at Socket.onevent (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:462:26)[39m
[31m at Socket._onpacket (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:430:22)[39m
[31m at /home/pi/MagicMirror/node_modules/socket.io/dist/client.js:214:24[39m
[31m at process.processTicksAndRejections (node:internal/process/task_queues:77:11) {[39m
[31m errno: -22,[39m
[31m code: 'EINVAL',[39m
[31m syscall: 'write'[39m
[31m}[39m
EDIT:
After several try and errors i found a solution that somewhat seem to work based on https://stackoverflow.com/questions/78173749/use-raspberry-pi-4-gpio-with-node-js/78184108#78184108
Type cat /sys/kernel/debug/gpio into the terminal and use the high numbers for the corresponding GPIO pin. This way they got recognized.
Also: i needed to press the button several times before it got the actual input correctly.