Bluetooth Le Gatt example to link with Arduino/Genuino 101

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This post show how to run the Android Bluetooth Le Gatt example Code to link with Arduino/Genuino 101.


The Arduino/Genuino 101 board contains the Intel® Curie™ Module. The 101 adds Bluetooth Low Energy capabilities and has an on-board 6-axis accelerometer/gyroscope, providing exciting opportunities for building creative projects in the connected world. More information about the technical specifications and documentation can be found on the Arduino/Genuino 101 main page.

In Arduino/Genuino 101 board, program with example:
> File > Examples > CurieBLE > CallbackLED


This example setup Arduino/Genuino 101 as Bluetooth LE device (named "LEDCB") with service with UUID "19B10000-E8F2-537E-4F6C-D104768A1214" and create switch characteristic allowing remote device to read and write, with UUID "19B10001-E8F2-537E-4F6C-D104768A1214". We need the UUIDs in future examples.

So I copy here for future reference:
/*
Copyright (c) 2015 Intel Corporation. All rights reserved.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-
1301 USA
*/


#include <CurieBLE.h>

const int ledPin = 13; // set ledPin to use on-board LED
BLEPeripheral blePeripheral; // create peripheral instance

BLEService ledService("19B10000-E8F2-537E-4F6C-D104768A1214"); // create service

// create switch characteristic and allow remote device to read and write
BLECharCharacteristic switchChar("19B10001-E8F2-537E-4F6C-D104768A1214", BLERead | BLEWrite);

void setup() {
Serial.begin(9600);
pinMode(ledPin, OUTPUT); // use the LED on pin 13 as an output

// set the local name peripheral advertises
blePeripheral.setLocalName("LEDCB");
// set the UUID for the service this peripheral advertises
blePeripheral.setAdvertisedServiceUuid(ledService.uuid());

// add service and characteristic
blePeripheral.addAttribute(ledService);
blePeripheral.addAttribute(switchChar);

// assign event handlers for connected, disconnected to peripheral
blePeripheral.setEventHandler(BLEConnected, blePeripheralConnectHandler);
blePeripheral.setEventHandler(BLEDisconnected, blePeripheralDisconnectHandler);

// assign event handlers for characteristic
switchChar.setEventHandler(BLEWritten, switchCharacteristicWritten);
// set an initial value for the characteristic
switchChar.setValue(0);

// advertise the service
blePeripheral.begin();
Serial.println(("Bluetooth device active, waiting for connections..."));
}

void loop() {
// poll peripheral
blePeripheral.poll();
}

void blePeripheralConnectHandler(BLECentral& central) {
// central connected event handler
Serial.print("Connected event, central: ");
Serial.println(central.address());
}

void blePeripheralDisconnectHandler(BLECentral& central) {
// central disconnected event handler
Serial.print("Disconnected event, central: ");
Serial.println(central.address());
}

void switchCharacteristicWritten(BLECentral& central, BLECharacteristic& characteristic) {
// central wrote new value to characteristic, update LED
Serial.print("Characteristic event, written: ");

if (switchChar.value()) {
Serial.println("LED on");
digitalWrite(ledPin, HIGH);
} else {
Serial.println("LED off");
digitalWrite(ledPin, LOW);
}
}

In Android side, load with example code of Bluetooth Le Gatt:


How it run:


This demo haven't show any real function indeed. In coming posts, I will TRY to implement my own example app (with re-using part of the Bluetooth Le Gatt example) to control and read state from Genuino 101. Currently, I don't know how much I can.

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