Lightblue Bean Serial/Scratch speed tests with and without accelerometer

bean-scratch-accel-no-button.ino

uint8_t buffer[20];
String msg = "ABCDEFGHIJKLMNOPQRS";
unsigned long startTest = 20000;
unsigned long stopTest = 40000;

void setup() {
  pinMode(A3, INPUT);
  msg.toCharArray((char *)buffer,20);
}

void loop() {
  unsigned long now = millis();
  if (now > startTest && now < stopTest) {
    AccelerationReading reading = Bean.getAcceleration();
    Bean.setScratchData(1, buffer, 20);  
  }
  delay(10);
}

bean-scratch-speed-with-accel.ino

int prevButtonState = LOW;
bool isEnabled = false;
uint8_t buffer[20];
String msg = "ABCDEFGHIJKLMNOPQRS";

void setup() {
  pinMode(A3, INPUT);
  msg.toCharArray((char *)buffer,20);
}

void loop() {
  int buttonState = digitalRead(A3);
  
  if (buttonState == HIGH && prevButtonState == LOW) {
    isEnabled = !isEnabled;
  }
  prevButtonState = buttonState;
  if (isEnabled) {
    AccelerationReading reading = Bean.getAcceleration();
    Bean.setScratchData(1, buffer, 20);  
  }
  delay(10);
}

bean-scratch-speed.ino

int prevButtonState = LOW;
bool isEnabled = false;
uint8_t buffer[20];
String msg = "ABCDEFGHIJKLMNOPQRS";

void setup() {
  pinMode(A3, INPUT);
  msg.toCharArray((char *)buffer,20);
}

void loop() {
  int buttonState = digitalRead(A3);
  
  if (buttonState == HIGH && prevButtonState == LOW) {
    isEnabled = !isEnabled;
  }
  prevButtonState = buttonState;
  if (isEnabled) {
    AccelerationReading reading = Bean.getAcceleration();
    Bean.setScratchData(1, buffer, 20);  
  }
  delay(10);
}

bean-serial-speed-with-accel.ino

void setup() {
  Serial.begin(115200);
  pinMode(A3, INPUT);
}

int prevButtonState = LOW;
bool isEnabled = false;

void loop() {
  int buttonState = digitalRead(A3);
  if (buttonState == HIGH && prevButtonState == LOW) {
    isEnabled = !isEnabled;
  }
  prevButtonState = buttonState;
  if (isEnabled) {
    AccelerationReading reading = Bean.getAcceleration();
    Serial.println("ABCDEFGHIJKLMNOPQR");  
  }
  delay(10);
}

bean-serial-speed.ino

void setup() {
  Serial.begin(115200);
  pinMode(A3, INPUT);
}

int prevButtonState = LOW;
bool isEnabled = false;

void loop() {
  int buttonState = digitalRead(A3);
  if (buttonState == HIGH && prevButtonState == LOW) {
    isEnabled = !isEnabled;
  }
  prevButtonState = buttonState;
  if (isEnabled) {
    Serial.println("1234567890123456789");  
  }
  delay(10);
}

scratch.js

/*jslint node: true */
"use strict";

var Bean = require('ble-bean');

var intervalId;
var connectedBean;
var bytes = 0;
var msgs = 0;

function printReport() {
  console.log(msgs + "," + bytes);
  msgs = 0;
  bytes = 0;
}

var SCRATCH_UUID = 'a495ff20c5b14b44b5121370f02d74de';
var SCRATCH_ONE = 'a495ff21c5b14b44b5121370f02d74de';

function onRead(buf) {
  var bufStr = buf.toString('ascii');
  if (bufStr !== 'ABCDEFGHIJKLMNOPQRS\0') {
    console.log("Unexpected message " + bufStr);
  }
  msgs++;
  bytes += buf.length;
}

Bean.discover(function(bean){
  connectedBean = bean;
  console.log("discover " + bean);
  process.on('SIGINT', exitHandler.bind(this));

  bean.on("disconnect", function(){
    console.log("disconnect");
    process.exit();
  });

  bean.connectAndSetup(function(){
    console.log("connect " + bean);
    bean.notifyCharacteristic(SCRATCH_UUID, SCRATCH_ONE, true, onRead, function(err) {
      if (err) throw err;
    });
    setInterval(printReport, 1000);
  });
});

process.stdin.resume();//so the program will not close instantly
var triedToExit = false;

//turns off led before disconnecting
var exitHandler = function exitHandler() {

  var self = this;
  if (connectedBean && !triedToExit) {
    triedToExit = true;
    console.log('Turning off led...');
    clearInterval(intervalId);
    connectedBean.setColor(new Buffer([0x0,0x0,0x0]), function(){});
    //no way to know if succesful but often behind other commands going out, so just wait 2 seconds
    console.log('Disconnecting from Device...');
    setTimeout(connectedBean.disconnect.bind(connectedBean, function(){}), 2000);
  } else {
    process.exit();
  }
};

serial.js

/*jslint node: true */
"use strict";

var Bean = require('ble-bean');

var intervalId;
var connectedBean;
var bytes = 0;
var msgs = 0;

function printReport() {
  console.log(msgs + "," + bytes);
  msgs = 0;
  bytes = 0;
}

function toHex(str) {
	var hex = [];
	for(var i=0;i<str.length;i++) {
		hex.push(str.charCodeAt(i).toString(16));
	}
	return hex.join(' ');
}

Bean.discover(function(bean){
  connectedBean = bean;
  console.log("discover " + bean);
  process.on('SIGINT', exitHandler.bind(this));

  bean.on("serial", function(data, valid){
    msgs++;
    var dataStr = data.toString();
    if (dataStr !== 'ABCDEFGHIJKLMNOPQR' && dataStr !== '\n' && dataStr !== '\r') {
      console.log('Unexpected data ' + toHex(dataStr))
    }
    bytes += dataStr.length;
  });

  bean.on("disconnect", function(){
    console.log("disconnect");
    process.exit();
  });

  bean.connectAndSetup(function(){
    console.log("connect " + bean);
    setInterval(printReport, 1000);
  });
});

process.stdin.resume();//so the program will not close instantly
var triedToExit = false;

//turns off led before disconnecting
var exitHandler = function exitHandler() {

  var self = this;
  if (connectedBean && !triedToExit) {
    triedToExit = true;
    console.log('Turning off led...');
    clearInterval(intervalId);
    connectedBean.setColor(new Buffer([0x0,0x0,0x0]), function(){});
    //no way to know if succesful but often behind other commands going out, so just wait 2 seconds
    console.log('Disconnecting from Device...');
    setTimeout(connectedBean.disconnect.bind(connectedBean, function(){}), 2000);
  } else {
    process.exit();
  }
};