我正在使用面向连接的通道开发BLE应用程序。我使用北欧半导体nrf52作为外围设备，使用iPhone 6作为中央管理器。
我已经使用了蓝牙SIG提供的预定义PSM值0x0025。
我可以连接到外围设备并成功打开L2CAP通道。
我得到以下错误:
** [CoreBluetooth]警告:未知错误:436
2018-06-08 10:03:17.532709-0400 BluetoothTest [407:62057] [CoreBluetooth] **未知与psm 37匹配的通道对等体****
请让我知道如何进行以及错误代码436的含义是什么
下面是我的代码:
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
//handling callback when a peripheral is discover
print("Central Manager PowerOn State Check:\(central.state.rawValue)")
if (peripheral.name?.contains("Nordic_OTSX") == true)
{
print(peripheral.name ?? "no name")
print("advertisement Data : \(advertisementData) ")
central.connect(peripheral, options: nil )
myPeripheral = peripheral
}
}
func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral)
{
print("didConnect\(myPeripheral.debugDescription)")
myPeripheral.delegate = self
myPeripheral.discoverServices(nil)
}
//if error while making connection
func centralManager(_ central: CBCentralManager, didFailToConnect peripheral: CBPeripheral, error: Error?)
{
print("error:\(error.debugDescription)")
}
//after opening L2CAP Channel
func peripheral(_ peripheral: CBPeripheral, didOpen channel: CBL2CAPChannel?, error: Error?)
{
print("didOpen")
print(error.customMirror)
print(channel!.outputStream.debugDescription)
print(channel!.inputStream.debugDescription)
print(channel?.outputStream.hasSpaceAvailable)
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?)
{
print("*******************************************************")
if ((error) != nil) {
print("Error discovering services: \(error!.localizedDescription)")
return
}
guard let services = peripheral.services else {
return
}
//We need to discover the all characteristic
for service in services {
peripheral.discoverCharacteristics(nil, for: service)
// bleService = service
}
print("Discovered Services: \(services)")
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?)
{
print("*******************************************************")
if let charcterstics = service.characteristics
{
print("characteristics :")
for char in charcterstics
{
/* if char.uuid == buttonCharacteristicUUID
{
buttonCharacteristic = char
enableButtonNotifications(buttonCharacteristic!)
readButtonValue()
}*/
print(char.uuid.uuidString)
}
}
peripheral.openL2CAPChannel(0x0025)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
最佳答案
0x25 PSM用于OTS。您需要ATT PSM为0x1F
关于ios - L2CAP channel 数据传输，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/50840365/