fs error

[sk337]

node:internal/fs/utils:347
    throw err;
    ^

Error: EINVAL: invalid argument, write
    at Object.writeSync (node:fs:920:3)
    at Object.writeFileSync (node:fs:2208:26)
    at exportGpio (/home/pi/rpiapp/node_modules/onoff/onoff.js:18:8)
    at new Gpio (/home/pi/rpiapp/node_modules/onoff/onoff.js:172:36)
    at new s (/home/pi/rpiapp/dist/index.cjs:1:1479)
    at Object.<anonymous> (/home/pi/rpiapp/dist/index.cjs:1:2592)
    at Module._compile (node:internal/modules/cjs/loader:1198:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1252:10)
    at Module.load (node:internal/modules/cjs/loader:1076:32)
    at Function.Module._load (node:internal/modules/cjs/loader:911:12) {
  errno: -22,
  syscall: 'write',
  code: 'EINVAL'
}
pi@raspberrypi:~/rpiapp $ node -v
v16.20.2

i am using a Pi 2 model B

[michaelpeterlee]

Same here with RPi5 Node v18.19.0

[michaelpeterlee]

Workaround: https://github.com/fivdi/onoff/issues/199

[alex-reach]

It seems that Raspberry OS kernel addresses GPIO pins yet by another numbering scheme.

cat /sys/kernel/debug/gpio gpio-512 (ID_SDA ) gpio-513 (ID_SCL ) gpio-514 (GPIO2 ) gpio-515 (GPIO3 ) gpio-516 (GPIO4 ) gpio-517 (GPIO5 ) gpio-518 (GPIO6 ) gpio-519 (GPIO7 ) gpio-520 (GPIO8 ) gpio-521 (GPIO9 ) gpio-522 (GPIO10 ) gpio-523 (GPIO11 ) gpio-524 (GPIO12 ) gpio-525 (GPIO13 ) gpio-526 (GPIO14 ) gpio-527 (GPIO15 ) gpio-528 (GPIO16 ) gpio-529 (GPIO17 ) gpio-530 (GPIO18 ) gpio-531 (GPIO19 ) gpio-532 (GPIO20 ) gpio-533 (GPIO21 ) gpio-534 (GPIO22 ) gpio-535 (GPIO23 ) gpio-536 (GPIO24 ) gpio-537 (GPIO25 ) gpio-538 (GPIO26 ) gpio-539 (GPIO27 )

You must use the number after gpio-[number]

[sk337]

It seems that Raspberry OS kernel addresses GPIO pins yet by another numbering scheme.

cat /sys/kernel/debug/gpio gpio-512 (ID_SDA ) gpio-513 (ID_SCL ) gpio-514 (GPIO2 ) gpio-515 (GPIO3 ) gpio-516 (GPIO4 ) gpio-517 (GPIO5 ) gpio-518 (GPIO6 ) gpio-519 (GPIO7 ) gpio-520 (GPIO8 ) gpio-521 (GPIO9 ) gpio-522 (GPIO10 ) gpio-523 (GPIO11 ) gpio-524 (GPIO12 ) gpio-525 (GPIO13 ) gpio-526 (GPIO14 ) gpio-527 (GPIO15 ) gpio-528 (GPIO16 ) gpio-529 (GPIO17 ) gpio-530 (GPIO18 ) gpio-531 (GPIO19 ) gpio-532 (GPIO20 ) gpio-533 (GPIO21 ) gpio-534 (GPIO22 ) gpio-535 (GPIO23 ) gpio-536 (GPIO24 ) gpio-537 (GPIO25 ) gpio-538 (GPIO26 ) gpio-539 (GPIO27 )

You must use the number after gpio-[number]

ok looks just to be offset by 512

[szwacz]

Looks like every GPIO library when run on new kernel will have this issue. At the same time seems like the whole community is perplexed what actually happened. Did you manage to find any official explanation how to prepare for this change and why it was introduced?

[SamDecrock]

On Raspbian Bullseye it works, on Raspbian Bookworm it's broken.

[nwpray]

The library needs to look for the gpiochip* file and add the * value to every pin. on mine its gpiochip512 so for pin 2 i believe it would be 514

[nwpray]

I opened a PR to lookup the base address and add that automatically to the address you pass https://github.com/fivdi/onoff/pull/204