我正在构建一个将数据发送到蓝牙HM-10的iPhone应用程序。
当我尝试开关按钮时，LED不工作。但是当我在LightBlue应用程序中测试它时，它运行正常，我不知道我哪里出错了。 我非常感谢你的帮助。
-edited -
“什么不能正常工作？”在引脚13中灯不亮，这是由Arduino Uno内置的。在Swift应用程序中，打开按钮，将“R”发送到蓝牙，触发导致打开，同样当我关闭按钮时它会发送“r”，led关闭。
“什么在起作用？”我可以连接蓝牙，我发现它的写特性uuid，writevalue函数不会给我任何错误。
“我不知道的是什么？”是否真的发送了什么。
- 更新 -
从写“withResponse”更改为“withoutResponse”解决了问题。 这是我正在使用的Arduino代码：
int message = 0; // This will hold one byte of the serial message
int redLEDPin = 13; // What pin is the red LED connected to?
int redLED = 0; // The value/brightness of the LED, can be 0-255
void setup() {
Serial.println("Setup Started");
Serial.begin(9600); //set serial to 9600 baud rate
}
void loop(){
if (Serial.available() > 0) { // Check if there is a new message
message = Serial.read(); // Put the serial input into the message
Serial.println(message);
if (message == 'R'){ // If a capitol R is received...
redLED = 255; // Set redLED to 255 (on)
}
if (message == 'r'){ // If a lowercase r is received...
redLED = 0; // Set redLED to 0 (off)
}
}
analogWrite(redLEDPin, redLED); // Write an analog value between 0-255
}
这是快速的代码：
import UIKit
import CoreBluetooth
class ViewController: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {
//references to central manager
let hmBleService = "FFE0"
let writeCHAR = "FFE1"
var centralManager: CBCentralManager!
var connectedPeripheral: CBPeripheral!
var writeCharacteristic: CBCharacteristic!
//OUTLETS
@IBOutlet weak var shadowView: UIView!
@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
@IBOutlet weak var uiSwitch: UISwitch!
@IBAction func uiSwitchValueChanged(_ sender: UISwitch) {
if(sender.isOn){
print("Switch is ON")
let dataA = "R".data(using: .utf8)
connectedPeripheral.writeValue(dataA!, for: writeCharacteristic, type: CBCharacteristicWriteType.withResponse)
//writeBLEData(string: "R")
}
else{
print("Switch is OFF")
let dataB = "r".data(using: .utf8)
connectedPeripheral.writeValue(dataB!, for: writeCharacteristic, type: CBCharacteristicWriteType.withResponse)
// writeBLEData(string: "r")
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
centralManager = CBCentralManager(delegate: self, queue:nil)
}
//Functions added
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
//Attempt to make BLE Connection
Timer.scheduledTimer(timeInterval: 1.0, target: self,selector: #selector(scanForBLEdevice), userInfo: nil, repeats: false)
activityIndicator.startAnimating()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
//CLose BLE Connection if it exists
}
@objc func scanForBLEdevice(){
centralManager.scanForPeripherals(withServices: [CBUUID(string:hmBleService)], options: nil)
}
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
if(peripheral.name != nil){
print("Found Peripheral name = \(peripheral.name!)")
}
else{
print("Found Peripheral with unknown name")
}
//Save reference to the peripheral
connectedPeripheral = peripheral
centralManager.stopScan()
centralManager.connect(connectedPeripheral, options: nil)
}
func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral) {
print("Connected to the device !")
hideActivityIndicator()
connectedPeripheral.delegate = self
connectedPeripheral.discoverServices(nil)
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
print("Service = \(String(describing: peripheral.services!.count))")
for service in peripheral.services!{
print("Servicee = \(service)")
let aService = service as CBService
if service.uuid == CBUUID(string: hmBleService){
// Discover characteristics for our service
peripheral.discoverCharacteristics(nil, for: aService)
}
}
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
for characteristic in service.characteristics!{
let aCharacteristic = characteristic as CBCharacteristic
if aCharacteristic.uuid == CBUUID(string: writeCHAR){
print("We found our write Characteristic")
writeCharacteristic = aCharacteristic
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//Central Manager Delegates
}
我在日志消息中得到的内容：
centralManagerDidUpdateState：已启动
电源开启
2017-11-11 22：23：14.390142 + 0300 BlueGreen [708：188886] refreshPreferences：
HangTracerEnabled：0 2017-11-11 22：23：14.390174 + 0300
BlueGreen [708：188886] refreshPreferences：HangTracerDuration：500
2017-11-11 22：23：14.390187 + 0300 BlueGreen [708：188886]
refreshPreferences：ActivationLoggingEnabled：0
ActivationLoggingTaskedOffByDA：0找到外围设备名称= HMSoft
连接到设备！服务= 1服务=
我们找到了写特征
开关打开
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