initial

node_modules/onoff/examples/blink-led.js

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+"use strict";
+
+const Gpio = require('../onoff').Gpio; // Gpio class
+const led = new Gpio(17, 'out');       // Export GPIO17 as an output
+
+// Toggle the state of the LED connected to GPIO17 every 200ms.
+// Here synchronous methods are used. Asynchronous methods are also available.
+const iv = setInterval(function () {
+  led.writeSync(led.readSync() ^ 1); // 1 = on, 0 = off :)
+}, 200);
+
+// Stop blinking the LED and turn it off after 5 seconds
+setTimeout(function () {
+  clearInterval(iv); // Stop blinking
+  led.writeSync(0);  // Turn LED off
+  led.unexport();    // Unexport GPIO and free resources
+}, 5000);
+