didReadRSSI 调用了 iOS 但没有调用 OS X

Question

我正在尝试编写一个 OS X 客户端，它可以频繁更新蓝牙外围设备的 RSSI 值。

我的客户端应用程序正在查找我的 iPhone 设备，我正在运行上安装一个测试应用程序，该应用程序正在宣传蓝牙服务。客户端应用程序有一个计时器，每 3 秒执行一次 peripheral.readRSSI()。

当运行ning 在 OS X 上时，我无法成功调用 didReadRSSI，但是当我运行 Swift 代码完全相同时 iOS 它工作正常。

在 iOS 9.3 - didReadRSSI 使用有效的 RSSI 值按预期调用。

在 OS X 10.11.4 - 永远不会调用 didReadRSSI。

我运行在 iOS 和 OS X:

上使用完全相同的 Swift 代码

import Foundation
import CoreBluetooth

class SampleClient:NSObject, CBCentralManagerDelegate, CBPeripheralDelegate {

var manager: CBCentralManager!
var peripheral: CBPeripheral!
var characteristic: CBCharacteristic!
var readRSSITimer: NSTimer!

override init() {
    super.init()
    self.manager = CBCentralManager(delegate: self, queue: nil)
}

func centralManagerDidUpdateState(central: CBCentralManager) {
    if self.manager.state == .PoweredOn {
        self.manager.scanForPeripheralsWithServices(nil, options: nil)
    }
}

func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
    if let name = peripheral.name {
        print(name)
        self.peripheral = peripheral
        self.manager.connectPeripheral(self.peripheral, options:
            [CBConnectPeripheralOptionNotifyOnDisconnectionKey : true])
    }
}

func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
    peripheral.readRSSI()
    self.startReadRSSI()
    peripheral.delegate = self
    peripheral.discoverServices(nil)
}

func centralManager(central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: NSError?) {
    self.stopReadRSSI()
    if self.peripheral != nil {
        self.peripheral.delegate = nil
        self.peripheral = nil
    }
}

func centralManager(central: CBCentralManager, didFailToConnectPeripheral aPeripheral: CBPeripheral, error: NSError?) {
    if self.peripheral != nil {
        self.peripheral.delegate = nil
        self.peripheral = nil
    }
}

func disconnect() {
    if self.characteristic != nil {
        self.peripheral.setNotifyValue(false, forCharacteristic: self.characteristic)
    }
    if self.peripheral != nil {
        self.manager.cancelPeripheralConnection(self.peripheral)
    }
}

func stopScan() {
    self.manager.stopScan()
}

func peripheral(peripheral: CBPeripheral, didDiscoverServices error: NSError?) {
    for service: CBService in peripheral.services! {
        peripheral.discoverCharacteristics(nil, forService: service)
    }
}

func peripheral(peripheral: CBPeripheral, didReadRSSI RSSI: NSNumber, error: NSError?) {
    print("RSSI = \(RSSI)")
}

func readRSSI() {
    if (self.peripheral != nil) {
        self.peripheral.delegate = self
        print("RSSI Request - \(peripheral.name!)")
        self.peripheral.readRSSI()
    } else {
        print("peripheral = nil")
    }
}

func startReadRSSI() {
    if self.readRSSITimer == nil {
        self.readRSSITimer = NSTimer.scheduledTimerWithTimeInterval(3.0, target: self, selector: #selector(SampleClient.readRSSI), userInfo: nil, repeats: true)
    }
}

func stopReadRSSI() {
    if (self.readRSSITimer != nil) {
        self.readRSSITimer.invalidate()
        self.readRSSITimer = nil
    }
}

}

在iOS上运行时的输出是：

iPhone
RSSI = -38
RSSI Request - iPhone
RSSI = -44
RSSI Request - iPhone
RSSI = -45

运行 on OS X 时的输出为：

My iPhone 6
RSSI Request - My iPhone 6
RSSI Request - My iPhone 6

请注意，返回的外设名称在两个平台上是不同的。我不知道这是否重要。

如何在 OS X 上调用 didReadRSSI？

Answer 1

OSX 使用旧样式，将此添加到您的 class 以获得预期的行为。

func peripheralDidUpdateRSSI(peripheral: CBPeripheral!, error: NSError!) {
    print("peripheralDidUpdateRSSI \(peripheral.name!) = \(peripheral.RSSI)")
}

didReadRSSI 调用了 iOS 但没有调用 OS X

didReadRSSI called on iOS but not on OS X

macos

ios

core-bluetooth

swift