263 lines
8.4 KiB
C#
263 lines
8.4 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Markup;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Navigation;
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using System.Windows.Shapes;
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using System.Windows.Threading;
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using Windows.Devices.Bluetooth.GenericAttributeProfile;
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using WpfBleApp.Ble;
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using WpfBleApp.Model;
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using WpfBleApp.Utils;
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namespace WpfBleApp
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{
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/// <summary>
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/// 蓝牙通信页面
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/// </summary>
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public partial class CommPage : Page
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{
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private readonly CommPageViewModel ViewModel = new CommPageViewModel();
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private readonly ObservableCollection<string> Logs = new ObservableCollection<string>();
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private int LogCount;
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bool isSending = false;
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public CommPage()
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{
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InitializeComponent();
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listBoxLog.ItemsSource = Logs;
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}
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/// <summary>
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/// 连接设备
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void buttonConnect_Click(object sender, RoutedEventArgs e)
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{
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if (ViewModel.BleDevice.IsConnected)
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{
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ViewModel.BleDevice.Disconnect();
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}
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else
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{
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ViewModel.BleDevice.Connect();
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}
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}
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int[] result = GetRandom(50);
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/// <summary>
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/// 发送数据
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private async void buttonSend_Click(object sender, RoutedEventArgs e)
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{
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if (buttonSend.Content.ToString() == "发送")
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{
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byte[] data = IntArrToByteArr(result);
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//byte[] data = ViewModel.TxDataHex.ToData();//待发送的数据
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//bool success = await ViewModel.BleDevice.Write(data);
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int time = 2;//间隔
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isSending = true;
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Time_Send(time, data);
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buttonSend.Content = "停止";
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}
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else if (buttonSend.Content.ToString() == "停止")
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{
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isSending = false;
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buttonSend.Content = "发送";
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}
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//byte[] data = ViewModel.TxDataHex.ToData();//待发送的数据
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//bool success = await ViewModel.BleDevice.Write(data);
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//for (int i = 0; i < data.Length; i++)
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//{
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// Console.WriteLine(data[i]);
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//}
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//if (success)
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//{
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// AddLog("发送成功 >>> " + data.ToHex());
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//}
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}
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/// <summary>
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/// 定时发送数据
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/// </summary>
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/// <param name="time"></param>
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/// <param name="message"></param>
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private async void Time_Send(int time, byte[] message)
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{
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while (isSending)
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{
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//调用发送的那个方法
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bool success = await ViewModel.BleDevice.Write(message);
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if (success)
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{
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AddLog("发送成功 >>> " + message.ToHex());
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}
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//间隔
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await Task.Delay(1000 * time);
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}
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}
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/// <summary>
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/// 收到的数据
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="args"></param>
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private void BleDevice_CharacteristicValueChanged(GattCharacteristic sender, byte[] args)
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{
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AddLog($"收到数据 <<< {args.ToHex()}");
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}
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/// <summary>
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/// 读取设备名称
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private async void buttonRead_Click(object sender, RoutedEventArgs e)
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{
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byte[] data = await ViewModel.BleDevice.Read(Uuids.GenericAccess, Uuids.DeviceName);
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if (data != null)
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{
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AddLog($"读取的设备名称: {Encoding.UTF8.GetString(data)}");
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}
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}
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public CommPage(BleDevice device) : this()
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{
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ViewModel.BleDevice = device;
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ViewModel.BleDevice.CharacteristicValueChanged += BleDevice_CharacteristicValueChanged;
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ViewModel.BleDevice.ConnectionStateChanged += BleDevice_ConnectionStateChanged;
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DataContext = ViewModel;
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device.Connect();
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}
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private void BleDevice_ConnectionStateChanged(BleDevice sender, bool args)
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{
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if (args)
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{
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AddLog("连接成功！");
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}
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else
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{
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AddLog("连接已断开！");
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}
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UpdateConnectButton(args);
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}
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/// <summary>
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/// 更新连接按钮状态信息
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/// </summary>
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/// <param name="connected"></param>
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private void UpdateConnectButton(bool connected)
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{
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buttonConnect.Dispatcher.Invoke(delegate
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{
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if (connected)
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{
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buttonConnect.Content = "断开连接";
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buttonConnect.Background = new SolidColorBrush(Color.FromRgb(199, 0, 6));
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buttonConnect.Foreground = new SolidColorBrush(Colors.White);
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}
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else
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{
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buttonConnect.Content = "连接设备";
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buttonConnect.Background = new SolidColorBrush(Colors.LightGray);
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buttonConnect.Foreground = new SolidColorBrush(Colors.Black);
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}
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});
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}
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private void AddLog(string msg)
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{
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listBoxLog.Dispatcher.Invoke(delegate
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{
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if (LogCount > 500)
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{
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Logs.RemoveAt(0);
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}
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Logs.Add($"{DateTime.Now:HH:mm:ss.fff} - {msg}");
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LogCount++;
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});
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}
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/// <summary>
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/// int数组转化为byte数组
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/// </summary>
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/// <param name="intArr"></param>
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/// <returns></returns>
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public static byte[] IntArrToByteArr(int[] intArr)
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{
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int intSize = sizeof(int) * intArr.Length;
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byte[] bytArr = new byte[intSize];
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//申请一块非托管内存
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IntPtr ptr = Marshal.AllocHGlobal(intSize);
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//复制int数组到该内存块
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Marshal.Copy(intArr, 0, ptr, intArr.Length);
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//复制回byte数组
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Marshal.Copy(ptr, bytArr, 0, bytArr.Length);
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//释放申请的非托管内存
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Marshal.FreeHGlobal(ptr);
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return bytArr;
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}
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/// <summary>
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/// 获得无重复随机数组
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/// </summary>
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/// <param name="n">上限n</param>
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/// <returns>返回随机数组</returns>
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static int[] GetRandom(int n)
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{
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//容器A和B
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int[] arryA = new int[n];
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int[] arryB = new int[n];
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//填充容器a
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for (int i = 0; i < arryA.Length; i++)
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{
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arryA[i] = i + 1;
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}
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//随机对象
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Random r = new Random();
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//最后一个元素的索引 如n=100，end=99
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int end = n - 1;
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for (int i = 0; i < n; i++)
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{
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//生成随机数 因为随机的是索引 所以从0到100取，end=100
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//一个大于等于 minValue 且小于 maxValue 的 32 位带符号整数，即：返回的值范围包括 minValue 但不包括 maxValue。
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//如果 minValue 等于 maxValue，则返回 minValue
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int minValue = 0;
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int maxValue = end + 1;
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int ranIndex = r.Next(minValue, maxValue);
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//把随机数放在容器B中
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arryB[i] = arryA[ranIndex];
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//用最后一个元素覆盖取出的元素
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arryA[ranIndex] = arryA[end];
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//缩减随机数生成的范围
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end--;
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}
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//返回生成的随机数组
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return arryB;
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}
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}
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}
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