Sending data to Bluno from iOS - ios

Question

I've recently bought a Bluno and am trying to create an iPhone app to talk to it. The Bluno makers include source code but it's in objective-c and I'm trying to port it to swift. Currently I can discover the Bluno, connect to it and see it's services. However I seem to see no characteristics, and get a nil when I print them. I've setup the Bluno so that it flashes once I send it the character "5" but I can't seem to find the correct characteristic in order to do so. Any help would be much appreciated. Here is my current code, the Obj-C code can be found here:
//
// ViewController.swift
// Bluetooth-Interaction
//
// Created by Frederik Lohner on 26/Oct/15.
// Copyright © 2015 JeongGroup. All rights reserved.
//
import UIKit
import CoreBluetooth
import SnapKit
class ViewController: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {
let backgroundView = UIView()
let scanButton = UIButton()
var DFRobotServiceId = "0000dfb0-0000-1000-8000-00805f9b34fb"
var kBlunoService = "DFB1"
var kBlunoDataCharacteristic = "dfb1"
var DFRobotCharacteristicsNameSerialPortId = "0000dfb1-0000-1000-8000-00805f9b34fb"
var NameCommandId = "0000dfb2-0000-1000-8000-00805f9b34fb"
// BLE
var centralManager: CBCentralManager!
var sensorTagPeripheral: CBPeripheral!
override func viewDidLoad() {
scanButton.setTitle("Scan", forState: UIControlState.Normal)
scanButton.addTarget(self, action: "startScanning", forControlEvents: UIControlEvents.TouchUpInside)
scanButton.backgroundColor = UIColor.blackColor()
backgroundView.addSubview(scanButton)
self.view.addSubview(backgroundView)
backgroundView.snp_makeConstraints { (make) -> Void in
make.left.right.top.bottom.equalTo(self.view)
}
scanButton.snp_makeConstraints { (make) -> Void in
make.left.bottom.equalTo(backgroundView)
make.width.height.equalTo(60)
}
// Initialize central manager on load
centralManager = CBCentralManager(delegate: self, queue: nil)
// self.centralManager.stopScan()
}
func startScanning() {
// print("Started Scanning!")
// //Could add service UUID here to scan for only relevant services
// self.centralManager.scanForPeripheralsWithServices(nil, options: nil)
let one = "1"
let data = one.dataUsingEncoding(NSUTF8StringEncoding)
// self.sensorTagPeripheral.writeValue(data!, forCharacteristic: , type: .WithoutResponse)
// self.sensorTagPeripheral.writeValue(data!, forCharacteristic: CBCharacteristic., type: .WithoutResponse)
// self.centralManager.
}
// Check status of BLE hardware
func centralManagerDidUpdateState(central: CBCentralManager) {
if central.state == CBCentralManagerState.PoweredOn {
print("Bluetooth is ON")
central.scanForPeripheralsWithServices(nil, options: nil)
} else if central.state == CBCentralManagerState.Resetting {
print("RESETTING")
} else if central.state == CBCentralManagerState.Unauthorized {
print("Not Authorized")
} else {
print("Bluetooth switched off or not initialized")
}
}
func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
// print(peripheral)
let deviceName = "Bluno"
if let nameOfDeviceFound = peripheral.name {
if (nameOfDeviceFound == deviceName) {
print("Name was found")
print("")
print("")
print(peripheral)
// for (key, value) in advertisementData {
// print("\(key) -> \(value)")
// }
// Stop scanning
self.centralManager.stopScan()
print("Stopped Scanning")
// Set as the peripheral to use and establish connection
self.sensorTagPeripheral = peripheral
self.sensorTagPeripheral.delegate = self
self.centralManager.connectPeripheral(peripheral, options: nil)
print("")
print("")
print("Connected")
print("")
}
else {
print("NOPE.EXE")
}
}
}
// // Check if the service discovered is a valid IR Temperature Service
func peripheral(peripheral: CBPeripheral, didDiscoverServices error: NSError?) {
if(error != nil) {
print(error?.description)
}
for service in peripheral.services! {
let thisService = service as CBService
print("Discovered Service: \(thisService.description)")
print("Discovered Characteristic: \(thisService.characteristics)")
}
}
func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) {
if(error != nil) {
print(error?.description)
}
for characteristic in service.characteristics! {
print("Characteristic found: \(characteristic)")
let one = "1"
let data = one.dataUsingEncoding(NSUTF8StringEncoding)
peripheral.writeValue(data!, forCharacteristic: characteristic, type: .WithoutResponse)
if(String(characteristic.UUID) == kBlunoService) {
print("Found")
}
}
}
func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
print("Did connect to peripheral.", terminator:"")
peripheral.delegate = self
peripheral.discoverServices(nil)
print(peripheral)
}
func centralManager(central: CBCentralManager, didFailToConnectPeripheral peripheral: CBPeripheral, error: NSError?) {
print("Failed to connect to peripheral.")
}
// func centralManager(central: CBCentralManager, didFailToConnectPeripheral peripheral: CBPeripheral, error: NSError?) {
// print("CONNECTION FAILED")
// }
func centralManager(central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: NSError?) {
print("CONNECTION WAS DISCONNECTED")
}
}

Answer 1

Managed to get this to work. Code can be found here.