Getting Error EBUSY: resource busy or locked

Question

Trying to run a Nodejs app to test Raspberry 3 B + Gpio Onoff Module but when i am trying to run the app getting this Error

fs.js:114
throw err;

Error: EBUSY: resource busy or locked, write
at Object.writeSync (fs.js:568:3)
at Object.writeFileSync (fs.js:1199:26)
at new Gpio (/home/pi/Desktop/pitesting/node_modules/onoff/onoff.js:96:10)
at Object.<anonymous> (/home/pi/Desktop/pitesting/blink.js:3:7)
at Module._compile (internal/modules/cjs/loader.js:701:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
at Module.load (internal/modules/cjs/loader.js:600:32)
at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
at Function.Module._load (internal/modules/cjs/loader.js:531:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)

Here is my App Code

var onoff = require('onoff');
var Gpio = onoff.Gpio,
  led = new Gpio(4, 'out'),
  interval;
interval = setInterval(function () {
  var value = (led.readSync() + 1) % 2;
  led.write(value, function () {
    console.log("Changed LED state to: " + value);
  });
}, 2000);
process.on('SIGINT', function () {
  clearInterval(interval);
  led.writeSync(0);
  led.unexport();
  console.log('Bye, bye!');
  process.exit();
});

Already Tried Fixes by updating and upgrading apt and reinstalling node modules.

Please Help me to resolve this issue.

Answer 1

There are many answers on GitHub regarding this issue.

• Some says npm cache clean this command executing on terminal solved the problem.

• Others recommend to delete the entire directory your app is the folder in and re-install the packages and then try running the program.

• Some also says that It is caused by the anti-malware software and recommend to disable it while running the program.

GitHub issue link: https://github.com/npm/npm/issues/13461

If it doesn't solve the issue, just change the GPIO pin to let's say 23 in coding and don't forget to physically replace LED from 4 to 23 too.

Answer 2

This problem can occur when you try to write to a file that is open in an editor

Answer 3

var onoff = require('onoff');
var Gpio = onoff.Gpio,
    led = new Gpio(4, 'out'),
    interval;
interval = setInterval(function () {
    var value = (led.readSync() + 1) % 2;
    led.write(value, function () {
        console.log("Changed LED state to: " + value);
    });
}, 2000);
process.on('SIGINT', function () {
    clearInterval(interval);
    led.writeSync(0);
    led.unexport();
    console.log('Bye, bye!');
    process.exit();
});