Updating Raspberry Pi

Now that we know what needs to be done, we will get started with the code.

Before we proceed, create a folder named chapter7 and make a copy of the chapter6 code in the chapter7 folder.

Next, open the pi/index.js file. We will update the ADXL345 initialization setup and then start working with the values. Update pi/index.js, as follows:

var config = require('./config.js'); 
var mqtt = require('mqtt'); 
var GetMac = require('getmac'); 
var request = require('request'); 
var ADXL345 = require('adxl345-sensor'); 
require('events').EventEmitter.prototype._maxListeners = 100; 
 
var adxl345 = new ADXL345(); // defaults to i2cBusNo 1, i2cAddress 0x53 
 
var Lcd = require('lcd'), 
    lcd = new Lcd({ 
        rs: 12, 
        e: 21, 
        data: [5, 6, 17, 18], 
        cols: 8, 
        rows: 2 
    }); 
 
var aclCtr = 0, 
    locCtr = 0; 
 
var prevX, prevY, prevZ, prevSMV, prevFALL; 
var locationG; // global location variable 
 
var client = mqtt.connect({ 
    port: config...