@iiot2k/gpiox/examples/pulse_gpio.js

Input/Output on any gpio library

/*
 * example pulse gpio output 
 *
 * run:
 * > node pulse_gpio.js
 *
 */


"use strict";

const gpiox = require("../gpiox");

const PIN_OUTPUT = 20;

const PULSE1 = 200; // ms
const PULSE2 = 5000; // ms

console.log("*** puls gpio node.js example ***");
console.log("stop program with Ctrl+C");

// init gpio
gpiox.init_gpio(PIN_OUTPUT, gpiox.GPIO_MODE_OUTPUT, 0);

console.log("pulse", PULSE1 + "ms");
gpiox.pulse_gpio(PIN_OUTPUT, PULSE1);

// after 5 pulse longer
var id_tout = setTimeout(function() {
    console.log("pulse", PULSE2 + "ms");
    gpiox.pulse_gpio(PIN_OUTPUT, PULSE2);
}, 1000);

// prevent stop program
var id_intv = setInterval(function() {}, 100);

process.on('SIGINT', () => {
    clearTimeout(id_tout);
    clearInterval(id_intv);
    console.log(" -> program stopped");
    process.exit();
});