windows - Windows 10蓝牙Gatt客户端ValueChanged问题

Question

目前，Bluetooth Gatt特性读取存在问题。我试图使用自己的自定义配置文件运行代码

thermometerCharacteristic.ValueChanged += temperatureMeasurementChanged;

导致此异常

mscorlib.ni.dll中发生类型'System.ArgumentException'的异常，但未在用户代码中处理

附加信息:值不在预期范围内。

我的函数参数看起来像这样

void temperatureMeasurementChanged(GattCharacteristic sender, GattValueChangedEventArgs eventArgs)

此代码类似于在MSDN上检索Bluetooth LE数据的示例。关于什么可能导致此的任何想法？非常感谢!

Answer 1

Check for thermometerCharacteristic.CharacteristicProperties == (GattCharacteristicProperties.Read | GattCharacteristicProperties.Notify)

订阅之前:

     if (characteristic.CharacteristicProperties == (GattCharacteristicProperties.Read | GattCharacteristicProperties.Notify))
        {
            characteristic.ValueChanged += Characteristic_ValueChanged;

            GattCommunicationStatus status =
                       await characteristic.WriteClientCharacteristicConfigurationDescriptorAsync(
                       CHARACTERISTIC_NOTIFICATION_TYPE);
        }