Swift CoreBluetooth：为什么我找不到与蓝牙外设相同的特性？

Question

我开始使用蓝牙作为由iPhone控制的项目车Arduino。 问题是我尝试从我的iphone发送单个数据，但仔细观察扫描功能并不是很好的特点，我认为问题来自于此。 您是否有想法在其特有的UUID中找到相同的内容？

import UIKit
import CoreBluetooth

@IBOutlet weak var peripheralLabel: UILabel!
//713D0000503E4C75BA943148F18D941E

let BEAN_NAME = "Carduino"
let CBUUIDUuidTx = CBUUID(string: "713D0000-503E-4C75-BA94-3148F18D941E")
let CBUUIDUuIdRx = CBUUID(string: "713D0000-503E-4C75-BA94-3148F18D941E")
let UuidTx = "713D0000-503E-4C75-BA94-3148F18D941E"
let UuIdRx = "713D0000-503E-4C75-BA94-3148F18D941E"

var peripheralBLE: CBPeripheral?
var manager:CBCentralManager!
var myPeripheral:CBPeripheral!
var sendDataCharacteristic:CBCharacteristic!
var txCharacteristic: CBCharacteristic!
var rxCharacteristic: CBCharacteristic!

override func viewDidLoad() {
    super.viewDidLoad()

    manager = CBCentralManager(delegate: self, queue: nil)
}

//Scan For devices
func centralManagerDidUpdateState(_ central: CBCentralManager) { 
    manager.scanForPeripherals(withServices: [CBUUIDUuidTx], options: nil)
}

//Connect to a Device
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
    let device = (advertisementData as NSDictionary)
        .object(forKey: CBAdvertisementDataLocalNameKey)
        as? NSString

    if device?.contains(BEAN_NAME) == true {
        self.manager.stopScan()

        self.myPeripheral = peripheral
        self.myPeripheral.delegate = self

        manager.connect(peripheral, options: nil)
        peripheralLabel.text = "Connect to \(peripheral.name!)"
    }
}

//Get Services
func centralManager(
    _ central: CBCentralManager,
    didConnect peripheral: CBPeripheral) {
    peripheral.discoverServices(nil)
}

//Get Characteristics
func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
    for service in peripheral.services! {
        let thisService = service as CBService

        if service.uuid == CBUUIDUuidTx {
            peripheral.discoverCharacteristics(
                nil,
                for: thisService
            )
        }
        print("This Service : \(thisService)")
    }        
}

func peripheral( _ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {     
    for characteristic in service.characteristics! {
        let thisCharacteristic = characteristic as CBCharacteristic

        if thisCharacteristic.uuid == CBUUIDUuidTx {
            self.myPeripheral.setNotifyValue(
                true,
                for: thisCharacteristic
            )
        }
        print("This Characteristic : \(thisCharacteristic)")
    }

}

//Disconnect and Try Again
func centralManager(
    _ central: CBCentralManager,
    didDisconnectPeripheral peripheral: CBPeripheral,
                            error: Error?) {
    central.scanForPeripherals(withServices: nil, options: nil)
}

@IBAction func ledAction(_ sender: AnyObject) {
    writeValue(data: "0x01")
}

func writeValue(data: String) {        
    if(myPeripheral != nil)
    {
        print(myPeripheral)
        //happens for sure
        var bytesData = [UInt8](data.utf8)
        let writeData = NSData (bytes: &bytesData, length: bytesData.count)
        myPeripheral.writeValue(writeData as Data, for: txCharacteristic, type: CBCharacteristicWriteType.withResponse)
        print(txCharacteristic)
    }
}