IOS Swift Service Characteristics - ios

Question

I'm trying to connect to a Bluetooth device (Adafruit Flora BLE) and looking for characteristic data to attach notification callbacks to. Problem is, I'm not seeing any characteristics listed. All I see are properties of the service itself and no characteristics.
Here is some code that shows where the identification of device and looking for service is occurring. Pardon the spaghetti code, just debugging/hacking together a prototype right now.
Basically, I'm trying to set up a notifier to the BLE service on the arduino/flora module so that I can send via UART sensor data. I have all the connection working, but can't seem to get the listener and updating portion working. Thanks!
func startScanning() {
print("Started scanning.")
visiblePeripheralUUIDs.removeAllObjects()
visiblePeripherals.removeAll(keepCapacity: true)
tableView.reloadData()
manager.scanForPeripheralsWithServices(nil, options: nil)
scanTimer = NSTimer.scheduledTimerWithTimeInterval(10, target: self, selector: Selector("stopScanning"), userInfo: nil, repeats: false)
}
func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
let UUID = "818ECB19-BB61-BE95-2D04-64E5D90845EF";
if (peripheral.identifier.UUIDString == UUID){
// print("Peripheral found with name: \(peripheral.name)\nUUID: \(peripheral.identifier.UUIDString)\nRSSI: \(RSSI)\nAdvertisement Data: \(advertisementData)")
visiblePeripheralUUIDs.addObject(peripheral.identifier.UUIDString)
visiblePeripherals[peripheral.identifier.UUIDString] = Peripheral(peripheral: peripheral, RSSI: RSSI.stringValue, advertisementDictionary: advertisementData)
tableView.reloadData()
//
connectedPeripheral = peripheral
connectionAttemptTimer = NSTimer.scheduledTimerWithTimeInterval(10, target: self, selector: Selector("timeoutPeripheralConnectionAttempt"), userInfo: nil, repeats: false)
manager.connectPeripheral(connectedPeripheral!, options: nil)
}
}
func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
//print("Peripheral connected: \(peripheral.name ?? peripheral.identifier.UUIDString)")
connectionAttemptTimer?.invalidate()
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let peripheralViewController = storyboard.instantiateViewControllerWithIdentifier("PeripheralViewController") as! PeripheralViewController
peripheralViewController.peripheral = peripheral
navigationController?.pushViewController(peripheralViewController, animated: true)
print("--------Starting service discovery")
// print("!!!!!!!!!!Services be present \(peripheral.services?.count)");
// for service in (peripheral.services)! {
// print("SERVICES: \(service)")
// }
}
func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) {
print("GOT TO PERIPHERAL")
if (peripheral != self.peripheral) {
// Wrong Peripheral
print("WrONG PERIPHERAL")
return
}
if (error != nil) {
print(" GOTS US AN ERROR")
return
}
print("CHECKING ON CHARACTERISTICS \(service.UUID)")
// for characteristic in service.characteristics! {
// print("CHARACTERISTIC \(characteristic)")
// if characteristic.UUID == service2 {
// print("WHAT THE F*** BRO \(characteristic as CBCharacteristic)");
// peripheral.setNotifyValue(true, forCharacteristic: characteristic as CBCharacteristic)
//
// // Send notification that Bluetooth is connected and all required characteristics are discovered
// //self.sendBTServiceNotificationWithIsBluetoothConnected(true)
// }
// }
}
Updated the didDiscoverCharacteristicsForService and it's still not returning anything for me to parse in my for loop:
`func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) {
print("GOT TO PERIPHERAL")
if (peripheral != self.peripheral) {
// Wrong Peripheral
print("WrONG PERIPHERAL")
return
}
if (error != nil) {
print(" GOTS US AN ERROR")
return
}
print("What is service: \(service)")
for characteristic in service.characteristics! {
print("CHARACTERISTIC \(characteristic)")
if characteristic.UUID == service2 {
print("WHAT THE F*** BRO \(characteristic as CBCharacteristic)");
peripheral.setNotifyValue(true, forCharacteristic: characteristic as CBCharacteristic)
// Send notification that Bluetooth is connected and all required characteristics are discovered
//self.sendBTServiceNotificationWithIsBluetoothConnected(true)
}
}
}
Am I missing something stupid here?
Christian