upm/examples/javascript/ds2413.js

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2015 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */


var sensorObj = require('jsupm_ds2413');


/************** Main code **************/
// Instantiate a DS2413 Module on a Dallas 1-wire bus connected to UART 0
var sensor = new sensorObj.DS2413(0);

// find all of the DS2413 devices present on the bus
sensor.init();

// how many devices were found?
console.log("Found", sensor.devicesFound(), "device(s)");

// read the gpio and latch values from the first device
// the lower 4 bits are of the form:
// <gpioB latch> <gpioB value> <gpioA latch> <gpioA value>
console.log("GPIO device 0 values:", sensor.readGpios(0));

// set the gpio latch values of the first device
console.log("Setting GPIO latches to on");;
sensor.writeGpios(0, 0x03);

sensor = null;
sensorObj.cleanUp();
sensorObj = null;
console.log("Exiting...");
process.exit(0);