@iiot2k/gpiox/examples/pulse_rt_gpio.js

Input/Output on any gpio library

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


"use strict";

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

const PIN_OUTPUT = 20;

const PULSE1 = 5; // us
const PULSE2 = 100; // us
const PULSE3 = 10; // us
const PULSE4 = 5000; // us

console.log("*** puls rt gpio node.js example ***");

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

console.log("pulse", PULSE1 + "us");
gpiox.pulse_rt_gpio(PIN_OUTPUT, PULSE1);

// after 500ms PULSE2
setTimeout(function() {
    console.log("pulse", PULSE2 + "us");
    gpiox.pulse_rt_gpio(PIN_OUTPUT, PULSE2);
}, 500);

// after 500ms PULSE3
setTimeout(function() {
    console.log("pulse", PULSE3 + "us");
    gpiox.pulse_rt_gpio(PIN_OUTPUT, PULSE3);
}, 1000);

// after 500ms PULSE4
setTimeout(function() {
    console.log("pulse", PULSE4 + "us");
    gpiox.pulse_rt_gpio(PIN_OUTPUT, PULSE4);
}, 1500);

// after 500ms stop program
setTimeout(function() {
    gpiox.deinit_gpio(PIN_OUTPUT);
    console.log(" -> program stopped");
}, 2000);