React Native BLE Peripheral

Native BLE Peripheral in React Native (no support for IOS at the moment)

Welcome

This is a simulator for a BLE peripheral, to help with testing BLE apps without an actual peripheral BLE device this project is not yet complete, for all ready parts see documentation below. (docs are not complete, feel free to improve them)

Realease notes

• none

Still missing

• this project have no support for IOS what so ever

if you would like to contribute to this project or suggest more future features you're welcome to so via an issue or pull request.

IOS support

right now this package does not support IOS, so any one that wants to help and contribute the IOS support is more than welcome

Installation

npm install react-native-ble-peripheral --save
or 
yarn add react-native-ble-peripheral

npm page - https://www.npmjs.com/package/react-native-ble-peripheral

Add permissions

• In AndroidManifest.xml add:

 <uses-permission android:name="android.permission.BLUETOOTH"/>
 <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

Project setup and initialization auto

react-native link

Project setup and initialization manually

• In android/settings.gradle

...
include ':react-native-ble-peripheral'
project(':react-native-ble-peripheral').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-ble-peripheral/android')

• In android/app/build.gradle

...
dependencies {
    /* YOUR DEPENDENCIES HERE */
   compile project(':react-native-ble-peripheral') // <--- add this
}

• Register Module (in MainApplication.java)

import com.himelbrand.forwardcalls.RNForwardCallsPackage;  // <--- import

public class MainActivity extends ReactActivity {
  ......

  @Override
  protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
          new MainReactPackage(),
          new RNBLEPackage() // <--- Add this
      );
  }

  ......

}

Usage

Import

import BLEPeripheral from 'react-native-ble-peripheral'

Add Service

BLEPeripheral.addService(UUID:string, primary:boolean)

BLEPeripheral.addService('XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', true) //for primary service
BLEPeripheral.addService('XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', false) //for non primary service

Add Characteristic

BLEPeripheral.addCharacteristicToService(ServiceUUID:string, UUID:string, permissions:number, properties:number)

https://developer.android.com/reference/android/bluetooth/BluetoothGattCharacteristic.html the link above is for permissions and properties constants info

BLEPeripheral.addCharacteristicToService('XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', 16 | 1, 8) //this is a Characteristic with read and write permissions and notify property

Notify to devices

BLEPeripheral.sendNotificationToDevices(ServiceUUID:string, CharacteristicUUID:string, data:byte[]) note #1: in js it's not really a byte array, but an array of numbers note #2: the CharacteristicUUID must be of a Characteristic with notify property

BLEPeripheral.sendNotificationToDevices('XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', [0x10,0x01,0xA1,0x80]) //sends a notification to all connected devices that, using the char uuid given

start Advertising

note:use this only after adding services and characteristics

 BLEPeripheral.start()
  .then(res => {
       console.log(res)
  }).catch(error => {
       console.log(error)
  })

stop Advertising

 BLEPeripheral.stop()

DOCs and project is under development Any help would be welcom... feel free to contact me