Windows 10 Bluetooth Gatt Client ValueChanged问题

Question

我现在遇到蓝牙Gatt特征读数问题。我试图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中发生了'System.ArgumentException'类型的异常，但未在用户代码中处理

其他信息：价值不在预期范围内。

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上检索蓝牙LE数据的示例。有什么可能导致这个问题的想法？非常感谢！

Answer 1

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

订阅前

：

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

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