신속한 LED 켜기/끄기를위한 BLE의 데이터 읽기 및 쓰기

Question

iOS와 함께 BLE을 개발 중입니다. LED 켜기/끄기에 BLE 서비스를 사용하고 있습니다. 데이터를 읽을 수는 있지만 데이터를 BLE 장치로 보낼 수 없습니다. BLE에 00을 보내면 LED가 꺼지고 01을 보내면 BLE 장치에 LED가 켜져 야합니다.

다음은 제 코드입니다.

func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) { 

     if let characterArray = service.characteristics as [CBCharacteristic]! { 

      for cc in characterArray { 

       if(cc.uuid.uuidString == "FEE1") { //properties: read, write 
                //if you have another BLE module, you should print or look for the characteristic you need. 

        myCharacteristic = cc //saved it to send data in another function. 
        //writeValue() 

        peripheral.readValue(for: cc) //to read the value of the characteristic 
       } 

      } 
     } 

    } 

    func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) { 

     if (characteristic.uuid.uuidString == "FEE1") { 

      let readValue = characteristic.value 
      print(readValue as Any) 
      let value = (readValue! as NSData).bytes.bindMemory(to: Int.self, capacity: readValue!.count).pointee //used to read an Int value 

      print (value) 
     } 
    } 


    //if you want to send an string you can use this function. 
    func writeValue() { 

     if isMyPeripheralConected { //check if myPeripheral is connected to send data 
      let dataToSend: Data = "01".data(using: String.Encoding.utf8)! 
      print(dataToSend) 
      myBluetoothPeripheral.writeValue(dataToSend as Data, for: myCharacteristic, type: CBCharacteristicWriteType.withoutResponse) //Writing the data to the peripheral 

     } else { 
      print("Not connected") 
     } 
    } 

어떻게하면됩니까?

Answer 1

빠른 3

var arrayReadWriteChar = [CBCharacteristic]() 


    func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) { 

     for newChar: CBCharacteristic in service.characteristics!{ 

      if newChar.uuid.uuidString == "FEE1"{ 

       self.arrayReadWriteChar.append(newChar) 

       periphreal.readValue(for: newChar) 

      } 
     } 
    } 

    func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) { 

     print("didUpdateValueForChar", characteristic) 

     if let error1 = error{ 

      print(error1) 
     } 
     else{ 

      let value = [UInt8](characteristic.value!) 

      print(value) //whole array 

      print(value[0]) //array object of index 0 
     } 
    } 

    func writeValue(){ 

     if isMyPeripheralConected { 

      let dataToSend: Data = "01".data(using: String.Encoding.utf8)! 

      print(dataToSend) 

      let command:[UInt8] = [0x01]   

      let sendData:Data = Data(command) 

      myBluetoothPeripheral.writeValue(sendData, for: self.arrayReadWriteChar[0], type: .withResponse) 
     } 
     else { 

      print("Not connected") 
     } 
    }