C# 编写的串口通信程序

 1         private void Form1_Load(object sender, EventArgs e)
 2         {
 3             serialPort1.PortName = "COM4";
 4             serialPort1.BaudRate = 9600;
 5             serialPort1.Open();
 6             this.textBox1.Clear();
 7             thread = new Thread(CrossThreadFlush);
 8             thread.IsBackground = true;
 9             thread.Start();
10         }

  1  public partial class Form1 : Form
  2     {
  3         private delegate void FlushClient(); //代理
  4         Thread thread = null;
  5         uint DateTemp;
  6         uint Datefalg = 0;
  7         uint counter = 0;
  8         uint DateTemp1 = 0;
  9         uint TMP1;
 10         uint RH1;
 11         uint PRESS1;
 12         double TMP;
 13         double RH;
 14         double PRESS;
 15 
 16         public Form1()
 17         {
 18             InitializeComponent();
 19         }
 20 
 21 
 22         private void Form1_Load(object sender, EventArgs e)
 23         {
 24             serialPort1.PortName = "COM4";
 25             serialPort1.BaudRate = 9600;
 26             serialPort1.Open();
 27             this.textBox1.Clear();
 28             thread = new Thread(CrossThreadFlush);
 29             thread.IsBackground = true;
 30             thread.Start();
 31         }
 32 
 33       
 34         private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
 35         {
 36             counter=counter+1;
 37             DateTemp = (uint)this.serialPort1.ReadByte();
 38             if (DateTemp == 0xF1)
 39             {
 40                 Datefalg = 1;
 41                 DateTemp1 = 0;
 42                 DateTemp = 0;
 43                 counter=0;
 44             }
 45             if (DateTemp == 0xF2)
 46             {
 47                 Datefalg = 2;
 48                 DateTemp1 = 0;
 49                 DateTemp = 0;
 50                 counter=0;
 51             }
 52             if (DateTemp == 0xF3)
 53             {
 54                 Datefalg = 3;
 55                 DateTemp1 = 0;
 56                 DateTemp = 0;
 57                 counter=0;
 58             }
 59             if (Datefalg == 1 && DateTemp != 0xF1)
 60             {   if(counter==1)
 61                 DateTemp1 = DateTemp;
 62             if (counter == 2)
 63             {
 64                 TMP1 = DateTemp1 * 256 + DateTemp;
 65                 TMP = (0.01 * TMP1) - 40;
 66             }
 67             
 68             }
 69             if (Datefalg == 2 && DateTemp != 0xF2)
 70             {
 71                 if (counter == 1)
 72                     DateTemp1 = DateTemp;
 73                 if (counter == 2)
 74                 {
 75                     RH1 = DateTemp1 * 256 + DateTemp;
 76                     RH = (0.0405 * RH1) - 4-0.0000028*RH1*RH1;
 77                 }
 78 
 79             }
 80             if (Datefalg == 3 && DateTemp != 0xF3)
 81             {
 82                 if (counter == 1)
 83                     DateTemp1 = DateTemp;
 84                 if (counter == 2)
 85                 {
 86                     PRESS1 = DateTemp1 * 256 + DateTemp;
 87                     PRESS = (PRESS1-16384)*90/16384 + 30;
 88                 }
 89             }
 90         }
 91 
 92         private void CrossThreadFlush()
 93         {
 94             while (true)
 95             {
 96                 //将sleep和无限循环放在等待异步的外面
 97                 Thread.Sleep(500);
 98                 ThreadFunction();
 99             }
100         }
101     
102         private void ThreadFunction()
103         {
104             if (this.textBox1.InvokeRequired)//等待异步
105             {
106                 FlushClient fc = new FlushClient(ThreadFunction);
107                 this.Invoke(fc); //通过代理调用刷新方法
108                 
109             }
110             else
111             textBox1.Text = TMP.ToString("0.00");
112             if (this.textBox2.InvokeRequired)//等待异步
113             {
114                 FlushClient fc = new FlushClient(ThreadFunction);
115                 this.Invoke(fc); //通过代理调用刷新方法
116 
117             }
118             else
119                 textBox2.Text = RH.ToString("0.00");
120             if (this.textBox3.InvokeRequired)//等待异步
121             {
122                 FlushClient fc = new FlushClient(ThreadFunction);
123                 this.Invoke(fc); //通过代理调用刷新方法
124 
125             }
126             else
127                 textBox3.Text = PRESS.ToString("0.00");
128             
129         }
130       
131         
132     }