單片機串口通訊收發數據C#上位機界面顯示出來

ID:540742 · 發表于 2019-5-17 15:35

如果，翻看我之前的博客，會找到一篇用I/O模擬IIC通信的程序文章。好吧，如果找不到可以點擊這里，這里就不在贅述了，系統也已經完全調試通過了。

今天的任務是，把測試得到的數據在上位機的界面上顯示出來，于是鍵盤手花了兩天的時間模仿著巨人的肩膀通過了用C#編寫的界面程序，界面很簡單就像下面顯示的一樣。

下面就一步一步給大伙展示一下我的程序吧。

C#非常的強大而且友好，串口的通信可以通過編程環境（這里我用的是Visual Studio 2010），如果有需要的話可以給我信息，我有完整版的安裝包。如下圖，簡單的調用和選擇就完成了串口的基本配置。

下面主要就是編程的問題了，在窗體Load的進程中可以完成串口的啟動

而后就是讀取數據的操作，這時候用到事件

1 private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)

在這個事件里面編程就可以了，但是在對窗體內文本進行操作的時候會發現出現了線程的沖突和錯誤。網上給出的一種解決方法是采用代理的方式具體的程序如下:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
using System.Net.Http;
using System.Collections;
namespace SerialPortDataUploader
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void comboBoxSerialPort_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.PortName = comboBoxSerialPort.Items[comboBoxSerialPort.SelectedIndex].ToString();
}
private void comboBoxSerialPort_MouseClick(object sender, MouseEventArgs e)
{
comboBoxSerialPort.Items.Clear();
comboBoxSerialPort.Items.AddRange(SerialPort.GetPortNames());
}
private void listBoxLog_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBoxLog.SelectedItem != null)
textBoxLog.Text = listBoxLog.SelectedItem.ToString();
}
Queue<char> DataQueue = new Queue<char>();
volatile private int lightZ = 50, tempZ = 28, wetZ = 30;
volatile private int lightX = 50, tempX = 28, wetX = 30;
volatile private int lightL = 50, tempL = 28, wetL = 30;
private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
char[] tmp = new char[1000];
int count = serialPort1.BytesToRead;
serialPort1.Read(tmp, 0, count);
for (int i = 0; i < count; i++)
DataQueue.Enqueue(tmp[i]);
while (DataQueue.Count >= 11)
{
switch (DataQueue.Peek())
{
case 'z':
case 'l':
case 'x':
{
char[] tmp1 = new char[100];
for (int i = 0; i < 11; i++)
tmp1[i] = DataQueue.Dequeue();
try
{
int light = (tmp1[2] - 0x30) * 10 + (tmp1[3] - 0x30);
int temp = (tmp1[5] - 0x30) * 10 + (tmp1[6] - 0x30);
int wet = (tmp1[8] - 0x30) * 10 + (tmp1[9] - 0x30);
switch (tmp1[0])
{
case 'z': lightZ = light; tempZ = temp; wetZ = wet; break;
case 'x': lightX = light; tempX = temp; wetX = wet; break;
case 'l': lightL = light; tempL = temp; wetL = wet; break;
}
}
catch (Exception) { }
break;
}
default:
DataQueue.Dequeue();
break;
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
comboBoxSerialPort.Items.Clear();
comboBoxSerialPort.Items.AddRange(SerialPort.GetPortNames());
}
private void buttonConnect_Click(object sender, EventArgs e)
{
serialPort1.Open();
buttonConnect.Enabled = false;
comboBoxSerialPort.Enabled = false;
labelStatu.ForeColor = Color.Green;
timer1.Start();
}
private string HTTPGet(string url)
{
using (var client = new HttpClient())
{
var responseString = client.GetStringAsync(url);
return responseString.Result;
}
}
private async Task<string> HTTPPost(string url, Dictionary<string, string> values)
{
using (var client = new HttpClient())
{
var content = new FormUrlEncodedContent(values);
var response = await client.PostAsync(url, content);
var responseString = await response.Content.ReadAsStringAsync();
return responseString.ToString();
}
}
delegate void listBoxLogAddMessage_Callback(string mwssage);
private void listBoxLogAddMessage(string message)
{
if (listBoxLog.InvokeRequired)
{
listBoxLogAddMessage_Callback d = new listBoxLogAddMessage_Callback(listBoxLogAddMessage);
this.Invoke(d, new object[] { message });
}
else
{
listBoxLog.Items.Add(message);
listBoxLog.SelectedIndex = listBoxLog.Items.Count - 1;
}
}
bool Timer1Flag = false;
int timer = 0, TimeSet = 5;
private void timer1_Tick(object sender, EventArgs e)
{
timer++;
if (Timer1Flag)
return;
string tmp = HTTPGet(BaseURL + "API.aspx?api=contralget1");
try
{
TimeSet = int.Parse(tmp);
}
catch (Exception) { }
if (TimeSet > 0 && timer >= TimeSet)
{
timer -= TimeSet;
Timer1Flag = true;
try
{
string url = BaseURL + "API.aspx?api=upload&lightZ={LIGHTZ}&lightX={LIGHTX}&lightL={LIGHTL}&tempZ={TEMPZ}&tempX={TEMPX}&tempL={TEMPL}&wetZ={WETZ}&wetX={WETX}&wetL={WETL}".Replace("{LIGHTZ}", lightZ.ToString()).Replace("{LIGHTX}", lightX.ToString());
url = url.Replace("{LIGHTL}", lightL.ToString()).Replace("{TEMPZ}", tempZ.ToString()).Replace("{TEMPX}", tempX.ToString()).Replace("{TEMPL}", tempL.ToString()).Replace("{WETZ}", wetZ.ToString()).Replace("{WETX}", wetX.ToString()).Replace("{WETL}", wetL.ToString());
string message = HTTPGet(url);
if (!message.Equals("{\"statu\":\"ok\"}"))
listBoxLogAddMessage(DateTime.Now.ToString() + " 服務器返回異常：" + message);
else
listBoxLogAddMessage(DateTime.Now.ToString() + " 已上傳至服務器。");
}
catch (Exception ext)
{
listBoxLogAddMessage(DateTime.Now.ToString() + " 上傳至服務器失敗：" + ext.Message);
}
Timer1Flag = false;
}
}
}
}