C#實現串口示波器
本文實例為大傢分享瞭C#實現串口示波器的具體代碼，供大傢參考，具體內容如下
開發工具
- visual studio2019
C#串口示波器，實時刷新端口號，動態繪制多條折線，獲取串口數據並輸出到文本框
之前用Java實現串口示波器對我來說還是比較困難的，而且實現的效果不盡如人意，就用C#開發瞭。
C#可以自由佈置界面，在工具欄直接拖拽控件到窗體，然後雙擊控件就能添加事件瞭，很方便
最終效果是實現瞭，但是有個數據丟失的問題
數據處理到繪圖分三個步驟：
1、獲取串口發送的數據
2、把數據按需要提取到中間容器集合list1中
3、從集合中提取繪圖的y值
測試得出的結果就是數據放進集合前不存在丟失，從集合中拿出數據這一過程也沒問題。所以問題就出在第二步瞭，已解決（按需提取數據的規則要盡可能設置的詳細一點就行）。
代碼：
namespace CommPortsDesigner
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) //窗體運行完成即為加載，加載完成會觸發事件
{
}
//傳入原始數據datas及需要匹配的字符串r，得到需要的數據列表list
private List<int> DealData(string datas, Regex r, string split)
{
if (string.IsNullOrEmpty(datas))
{
throw new ArgumentException($"“{nameof(datas)}”不能是 Null 或為空。", nameof(datas));
}
List<int> list1=new List<int> { };
string s1="";
MatchCollection mc = r.Matches(datas); //提取符合要求的字符串
for (int i = 0; i < mc.Count; i++)
{
textBox2.AppendText(mc[i].Value + "\r\n"); //測試數據是否正確輸出
s1 = s1 + mc[i].Value;
}
string[] d = s1.Split( new string[]{split}, StringSplitOptions.RemoveEmptyEntries);
for (int i=0;i<d.Length;i++) //將數字存入列表
{
list1.Add( int.Parse(d[i]));
}
//測試畫圖用的數據是否解析正確
if (split.Equals("LP4:"))
{
foreach (int m in list1)
{
textBox3.AppendText(m + "\r\n");
}
}
return list1;
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.BaudRate = int.Parse(comboBox2.SelectedItem.ToString());
}
private void searchPort()
{
string Buffer;
comboBox1.Items.Clear();
for (int i = 1; i < 20; i++)
{
try
{
Buffer = "COM" + i.ToString();
serialPort1.PortName = Buffer;
serialPort1.Open();
comboBox1.Items.Add(Buffer);
comboBox1.SelectedItem = Buffer;
serialPort1.Close();
}
catch
{ }
}
}
private void getDatas()
{
System.Text.RegularExpressions.Regex r1 = new System.Text.RegularExpressions.Regex("LP1:(-?)\\d+");
System.Text.RegularExpressions.Regex r2 = new System.Text.RegularExpressions.Regex("LP2:(-?)\\d+");
System.Text.RegularExpressions.Regex r3 = new System.Text.RegularExpressions.Regex("LP3:(-?)\\d+");
System.Text.RegularExpressions.Regex r4 = new System.Text.RegularExpressions.Regex("LP4:(-?)\\d+");
System.Text.RegularExpressions.Regex r5 = new System.Text.RegularExpressions.Regex("LP5:(-?)\\d+");
System.Text.RegularExpressions.Regex r6 = new System.Text.RegularExpressions.Regex("CC1:(-?)\\d+");
System.Text.RegularExpressions.Regex r7 = new System.Text.RegularExpressions.Regex("CC2:(-?)\\d+");
System.Text.RegularExpressions.Regex r8 = new System.Text.RegularExpressions.Regex("CC3:(-?)\\d+");
System.Text.RegularExpressions.Regex r9 = new System.Text.RegularExpressions.Regex("CC4:(-?)\\d+");
System.Text.RegularExpressions.Regex r10 = new System.Text.RegularExpressions.Regex("CC5:(-?)\\d+");
byte[] inbuffer = null;
//Queue<int> q1 = new Queue<int>();
if (serialPort1.IsOpen && serialPort1.BytesToRead > 0)
{
chart1.ChartAreas[0].AxisX.LabelStyle.Format = "hh:mm:ss.ff";
chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Milliseconds;
chart1.ChartAreas[0].AxisX.MajorGrid.IntervalType = DateTimeIntervalType.Milliseconds;
try
{
inbuffer = new byte[serialPort1.BytesToRead];
serialPort1.Read(inbuffer, 0, serialPort1.BytesToRead);
string strRaad = ASCIIEncoding.ASCII.GetString(inbuffer, 0, inbuffer.Length);
textBox1.AppendText(strRaad);
chart1.ChartAreas[0].AxisX.Minimum = DateTime.Now.AddSeconds(-5).ToOADate();
chart1.ChartAreas[0].AxisX.Maximum = DateTime.Now.ToOADate();
chart1.ChartAreas[0].AxisX.Interval = 500;
if (btn_start.Text.Equals("停止"))
{
//LP1
if (checkBox2.Checked)
{
foreach (int y in DealData(strRaad, r2, "LP2:"))
{
chart1.Series[1].Points.AddXY(DateTime.Now.ToOADate(), y);
//count2 = count2 + 5;
}
}
else
{
chart1.Series[1].Points.Clear();
}
//LP2
if (checkBox2.Checked)
{
foreach (int y in DealData(strRaad, r2, "LP2:"))
{
chart1.Series[1].Points.AddXY(DateTime.Now.ToOADate(), y);
//count2 = count2 + 5;
}
}
else
{
chart1.Series[1].Points.Clear();
}
//LP3
if (checkBox3.Checked)
{
foreach (int y in DealData(strRaad, r3, "LP3:"))
{
chart1.Series[2].Points.AddXY(DateTime.Now.ToOADate(), y);
//count3 = count3 + 5;
}
}
else
{
chart1.Series[2].Points.Clear();
}
//LP4
if (checkBox4.Checked)
{
foreach (int y in DealData(strRaad, r4, "LP4:"))
{
chart1.Series[3].Points.AddXY(DateTime.Now.ToOADate(), y);
//count4 = count4 + 5;
}
}
else
{
chart1.Series[3].Points.Clear();
}
//LP5
if (checkBox5.Checked)
{
foreach (int y in DealData(strRaad, r5, "LP5:"))
{
chart1.Series[4].Points.AddXY(DateTime.Now.ToOADate(), y);
//count5 = count5 + 5;
}
}
else
{
chart1.Series[4].Points.Clear();
}
//CC1
if (checkBox6.Checked)
{
foreach (int y in DealData(strRaad, r6, "CC1:"))
{
chart1.Series[5].Points.AddXY(DateTime.Now.ToOADate(), y);
//count6 = count6 + 5;
}
}
else
{
chart1.Series[5].Points.Clear();
}
//CC2
if (checkBox7.Checked)
{
foreach (int y in DealData(strRaad, r7, "CC2:"))
{
chart1.Series[6].Points.AddXY(DateTime.Now.ToOADate(), y);
//count7 = count7 + 5;
}
}
else
{
chart1.Series[6].Points.Clear();
}
//CC3
if (checkBox8.Checked)
{
foreach (int y in DealData(strRaad, r8, "CC3:"))
{
chart1.Series[7].Points.AddXY(DateTime.Now.ToOADate(), y);
//count8 = count8 + 5;
}
}
else
{
chart1.Series[8].Points.Clear();
}
//CC4
if (checkBox9.Checked)
{
foreach (int y in DealData(strRaad, r9, "CC4:"))
{
chart1.Series[8].Points.AddXY(DateTime.Now.ToOADate(), y);
//count9 = count9 + 5;
}
}
else
{
chart1.Series[8].Points.Clear();
}
//CC5
if (checkBox10.Checked)
{
foreach (int y in DealData(strRaad, r10, "CC5:"))
{
chart1.Series[9].Points.AddXY(DateTime.Now.ToOADate(), y);
//count10 = count10 + 5;
}
}
else
{
chart1.Series[9].Points.Clear();
}
}
}
catch
{
}
}
}
private void btn_open_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen||btn_open.Text.Equals("關閉"))
{
try
{
serialPort1.Close();
btn_open.Text = "打開";
}
catch
{ }
}
else
{
try
{
serialPort1.PortName = comboBox1.Text;
serialPort1.Open();
btn_open.Text = "關閉";
}
catch
{
MessageBox.Show("串口打開失敗！", "錯誤");
}
}
}
private void timer1_Tick(object sender, EventArgs e)
{
if (!serialPort1.IsOpen)
{
searchPort();
}
else{}
getDatas();
}
private void btn_clear_Click(object sender, EventArgs e)
{
textBox1.Clear();
}
private void btn_save_Click(object sender, EventArgs e)
{
if (this.textBox1.TextLength > 0)
{
string path = "D:\\log.txt";
using (StreamWriter sw = new StreamWriter(path, true))
{
String time = DateTime.Now.ToLocalTime().ToString();
sw.WriteLine("\n" + time);
sw.Write(this.textBox1.Text);
}
MessageBox.Show("已保存到 D:\\log.txt！");
}
}
private void btn_start_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
if (btn_start.Text.Equals("開始"))
{
try
{
btn_start.Text = "停止";
}
catch
{ }
}
else
{
try
{
btn_start.Text = "開始";
}
catch
{
}
}
}
else
{
if (btn_start.Text.Equals("停止"))
{
try
{
btn_start.Text = "開始";
}
catch
{ }
}
else
{
MessageBox.Show("串口未打開！");
}
}
}
}
}
因為第一次開發，所以要實現的功能代碼都放在一個類裡瞭，大傢將就著看吧
最終實現的效果
以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。
推薦閱讀：
- C#實現chart控件動態曲線繪制
- C#實現運行狀態堆疊柱狀圖
- C#使用Chart繪制曲線
- C#中使用DevExpress中的ChartControl實現極坐標圖的案例詳解
- C#實現圖表中鼠標移動並顯示數據