c#实现低功耗蓝牙ble数据读写功能代码

以下是使用C#实现低功耗蓝牙BLE数据读写功能的示例代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using Windows.Devices.Enumeration;

namespace BleCommunication
{
    class Program
    {
        static void Main(string[] args)
        {
            var task = MainAsync(args);
            task.Wait();
        }

        static async Task MainAsync(string[] args)
        {
            // 查询所有蓝牙设备
            string selector = BluetoothLEDevice.GetDeviceSelector();
            var devices = await DeviceInformation.FindAllAsync(selector);

            // 过滤出指定名称的设备
            var device = devices.FirstOrDefault(d => d.Name == "My BLE Device");

            if (device != null)
            {
                // 连接设备
                var bleDevice = await BluetoothLEDevice.FromIdAsync(device.Id);

                // 查询服务
                var serviceUuid = Guid.Parse("0000fff0-0000-1000-8000-00805f9b34fb");
                var serviceResult = await bleDevice.GetGattServicesForUuidAsync(serviceUuid);
                var service = serviceResult.Services.FirstOrDefault();

                if (service != null)
                {
                    // 查询特征值
                    var characteristicUuid = Guid.Parse("0000fff1-0000-1000-8000-00805f9b34fb");
                    var characteristicResult = await service.GetCharacteristicsForUuidAsync(characteristicUuid);
                    var characteristic = characteristicResult.Characteristics.FirstOrDefault();

                    if (characteristic != null)
                    {
                        // 订阅特征值通知
                        var status = await characteristic.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
                        if (status == GattCommunicationStatus.Success)
                        {
                            characteristic.ValueChanged += (sender, args) =>
                            {
                                // 处理接收到的数据
                                var data = args.CharacteristicValue.ToArray();
                                Console.WriteLine("Received data: {0}", BitConverter.ToString(data));
                            };

                            // 发送数据
                            var dataToSend = new byte[] { 0x01, 0x02, 0x03 };
                            var writeStatus = await characteristic.WriteValueAsync(dataToSend.AsBuffer());
                            if (writeStatus == GattCommunicationStatus.Success)
                            {
                                Console.WriteLine("Data sent successfully.");
                            }
                            else
                            {
                                Console.WriteLine("Failed to send data.");
                            }
                        }
                        else
                        {
                            Console.WriteLine("Failed to subscribe to notifications.");
                        }
                    }
                    else
                    {
                        Console.WriteLine("Characteristic not found.");
                    }
                }
                else
                {
                    Console.WriteLine("Service not found.");
                }
            }
            else
            {
                Console.WriteLine("Device not found.");
            }

            Console.ReadLine();
        }
    }
}

请注意，此示例仅用于演示BLE通信的基本过程。在实际应用中，您需要根据设备的具体规格和特性来编写更复杂的代码。