Nothing happens.. it just hangs..

[ghost]

I tried the sample below, but it logs to console "written pin" but then the app just hangs and I have to ctrl-C it.. nothing happens on the pins ether.

var gpio = require('rpi-gpio');

gpio.setup(7, gpio.DIR_OUT, write);

function write() { gpio.write(7, true, function(err) { if (err) throw err; console.log('Written to pin'); }); }

[thecodershome]

I'm not certain why nothing happens to the pins, but adding process.exit() after the console log should stop the process and prevent the need to Ctrl-C.

var gpio = require('rpi-gpio');

gpio.setup(7, gpio.DIR_OUT, write);

function write() {
  gpio.write(7, true, function (err) {
    if (err) throw err;
    console.log('Written to pin');
    process.exit(0); // Stop the process
  });
}

[ghost]

I gave up trying to use this and wrote a piece of code that does direct file writes to /sys/class/gpio/gpioX .

that works great..

[JamesBarwell]

Sounds like you're not intending to return to this code, and it's not something I could re-create, so I'll close this one.

For future reference, the code above doesn't check for errors coming from the setup method. It could have been that it was failing silently for some reason. Perhaps if there was an error it would have given more information.