我是蓝牙连接的新手，我想在我的 iOS 项目中添加第二个设备。我已经有了一个设备，新设备与第一个非常相似，但有点不同。我有两个设备的一个进程，我没有更改很多代码，只是为新设备创造了所有价值。我的所有设备都有不同的名称和标识符，第一个设备工作正常。
为了创建 UUID 值，我使用了 UUID 生成器 (https://www.guidgenerator.com/online-guid-generator.aspx)。
class BleConstants: NSObject {
let deviceTwoServiceUUID = “59DE3994-6A63-4654-8FF0-F85C5163B2F5”
let deviceTwoFirstCharacteristicUUID = “59DE3994-6A63-4654-8FF0-F85C5163B2F6”
let deviceTwoSecondCharacteristicUUID = “59DE3994-6A63-4654-8FF0-F85C5163B2F7”
let deviceOneServiceUUID = “A6AF4483-E210-457B-B9D6-B8A621513D1D”
let deviceOneFirstCharacteristicUUID = “A6AF4483-E210-457B-B9D6-B8A621513D2D”
let deviceOneSecondCharacteristicUUID = “A6AF4483-E210-457B-B9D6-B8A621513D2D”
}
class BleManager: NSObject, CBCentralManagerDelegate, CBPeripheralDelegate {
@objc private(set) static var sharedInstance = BleManager()
var cbManager : CBCentralManager? = nil
var currentPeripheral : CBPeripheral? = nil
var secondService : CBService? = nil
var firstService : CBService? = nil
var secondFirstCharacteristic : CBCharacteristic!
var secondSecondCharacteristic : CBCharacteristic!
var firstFirstCharacteristic : CBCharacteristic!
var firstSecondCharacteristic : CBCharacteristic!
func initCentralManager() {
if cbManager == nil {
cbManager = CBCentralManager(delegate: self, queue: nil, options: [CBCentralManagerOptionRestoreIdentifierKey : “MyApp”, CBCentralManagerOptionShowPowerAlertKey: true])
}
func deinitCentralManager() {
cbManager = nil
}
func isBluetoothAvailable() -> Bool {
return cbManager?.state == CBManagerState.poweredOn
}
func scan() {
if (cbManager != nil && (cbManager?.isScanning)!) {
return
}
discoveredPeripherals.removeAll()
let serviceUUIDs = [CBUUID(string: BleConstants.deviceTwoServiceUUID), CBUUID(string: BleConstants.deviceOneServiceUUID)]
cbManager?.scanForPeripherals(withServices: serviceUUIDs,
options: [CBCentralManagerScanOptionAllowDuplicatesKey : 1])
}
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
if(!discoveredPeripherals.contains(peripheral)) {
discoveredPeripherals.append(peripheral)
}
}
func stopScan() {
if cbManager != nil && (cbManager?.isScanning)! {
cbManager?.stopScan()
}
}
func connect(peripheral: CBPeripheral) {
if cbManager?.state == CBManagerState.poweredOn {
if currentPeripheral == nil || currentPeripheral?.state != CBPeripheralState.connected {
cbManager?.connect(peripheral, options: nil)
} else {
cbManager?.cancelPeripheralConnection(peripheral)
}
}
}
func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral) {
Device.savePeripheralString(peripheral: peripheral.identifier.uuidString)
AutoConnect.stop()
DeviceUpdate.updateProgress = .None
Device.isDongleConnected = true
currentPeripheral = peripheral
currentPeripheral?.delegate = self
currentPeripheral?.discoverServices(nil)
disableSleep()
}
func disableSleep() {
UIApplication.shared.isIdleTimerDisabled = true
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
if error != nil {
return
}
if let services = peripheral.services {
for service in services {
if service.uuid.uuidString == BleConstants.deviceTwoServiceUUID {
Device.dongleType = port.second
secondService = service
peripheral.discoverCharacteristics(nil, for: service)
}
if service.uuid.uuidString == BleConstants.deviceOneServiceUUID {
Device.dongleType = port.first
firstService = service
peripheral.discoverCharacteristics(nil, for: service)
} else {
Log.bt("didDiscoverServices for peripheral not found \(peripheral.identifier.uuidString)")
}
}
}
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
for characteristic in service.characteristics! {
if characteristic.uuid.uuidString == BleConstants.deviceOneFirstCharacteristicUUID {
firstCharacteristic = characteristic
}
else if characteristic.uuid.uuidString == BleConstants.deviceOneSecondCharacteristicUUID {
firstSecondCharacteristic = characteristic
else if characteristic.uuid.uuidString == BleConstants.deviceTwoFirstCharacteristicUUID {
secondFirstCharacteristic = characteristic
} else if characteristic.uuid.uuidString == BleConstants.deviceTwoSecondCharacteristicUUID {
secondSecondCharacteristic = characteristic
} else {
Log.bt("didDiscoverCharacteristics not found \(characteristic.uuid.uuidString)")
}
}
if Device.dongleType == .deviceTwo {
openPortDeviceTwo()
} else {
openPortDeviceOne()
}
}
}
来自日志的数据：
对于第一台设备：
对于第二个设备：
基于连接到我的第一个服务 UUID 和第一个特征 UUID 的第 16 步应用程序中第二个设备的日志信息，这是错误的！
你知道吗，我创建的 UUID 是否正确？
附： Android 应用在两种设备上都能正常运行。
非常感谢！
答案 0 :(得分：0)
为多个 BLE 设备接收相同的服务和特征 UUID 是完全正常的，这仅意味着所有设备都提供完全相同的服务。
例如： 如果您有两个设备可以测量一个人的心率，例如智能手表，两种设备都可能提供具有相同 UUID 的心率服务。
如果您想区分设备，您可以使用您在提供的日志的第 3 步中收到的标识符。