需要帮助以获得seriell端口的实时图表 [英] Need help for a real time graph for seriell port

问题描述

你好



i需要实时情节帮助。

我找不到有什么问题。



什么是忘记？

Hello

i Need help for a realtime plot.
What is wrong i dont found.

What is Forget?

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;
using System.IO.Ports;
using System.Management;
using System.Windows.Forms.DataVisualization.Charting;

namespace Graphs
{
    public partial class Form1 : Form
    {
        private string data;
        public Form1()
        {
            InitializeComponent();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            Application.Exit();   //Programm schliessen
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string[] ports = SerialPort.GetPortNames();
            foreach (string port in ports)
            {
                comboBox1.Items.Add(port);
            }
        }

        string t;

        private void button2_Click(object sender, EventArgs e)
        {
            t = comboBox1.Text.ToString();

            sErial(t);

        }
        SerialPort sp;
        void sErial(string Port_name)
        {
            sp = new SerialPort(Port_name, 9600, Parity.None, 8, StopBits.One);

            sp.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
            sp.Open();


        }

        private void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
        {

            SerialPort sp = (SerialPort)sender;

            string w = sp.ReadLine();

            //string msg = sp.ReadExisting();
            if (w != String.Empty)
            {
                Invoke(new Action(() => richTextBox1.AppendText(w)));
            }

            
                  this.chart1.Series["Data1"].Points.AddXY(rt, data);


        }

        double rt = 0;
        Boolean i = false;
        private void timer1_Tick(object sender, EventArgs e)
        {
            rt = rt + 0.1;
        }

    }






}

谢谢



我尝试过：



我没有使用图表。

我是初学者

thanks

What I have tried:

I have no work with Charts .
I am beginner

推荐答案

首先：

您将变量'数据'作为值添加到图表中 - 所以：

第一个错误：'data'必须是数字变量，可能是整数或单个或双精度。 ..但不是一个字符串!!!

第二个错误：你在哪里分配'数据'（如果它是一个数字变量）？



您在方法'DataReceivedHandler'中使用sp.Readline获得了哪些数据？

您能看到RichTextbox中有意义的值吗？

At first :
you add your Variable 'data' as Value to the Chart - so :
1st mistake : 'data' must be a number-variable, perhaps Integer or Single or Double ... but not a string !!!
2nd mistake : where do you assign 'data' (if it is a number-variable) ?

What Kind of data do you receive with sp.Readline inside the method 'DataReceivedHandler' ?
Could you see values inside your RichTextbox which make sense ?

这篇关于需要帮助以获得seriell端口的实时图表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！