只需单击一下按钮,我就需要读取和写入数据到串口。
传感器板连接到我的电脑上,上面装有微控制器。
我只需点击一下即可完成以下操作:
之后,我必须对收到的数据进行一些计算。
如何通过单击按钮多次发送和读取数据?
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;
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
comboBox1.Items.AddRange(SerialPort.GetPortNames());
}
private void button1_Click(object sender, EventArgs e)
{
serialPort1.PortName = comboBox1.Text;
serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);
serialPort1.Open();
serialPort1.Write("$g helloboard!"); // A message sending to micro controller. After that micro controller send back a message.
}
string str;
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
int bytes = serialPort1.BytesToRead;
byte[] buffer = new byte[bytes];
serialPort1.Read(buffer, 0, bytes);
System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
str = enc.GetString(buffer);
}
}
}
答案 0 :(得分:0)
一个简单(和肮脏)的解决方案就是拥有类似的东西
private bool data_received = true;
private void button1_Click(object sender, EventArgs e)
{
while (true)
{
if (data_received)
{
data_received = false;
serialPort1.Write("$get register 42");
}
System.Threading.Thread.Sleep(1);
}
}
并在你的回调serialPort1_DataReceived
中添加:
data_received = true;
这仅用于测试目的。它远非一个好的解决方案,接下来的任务是在后台线程中进行工作,因此你的GUI不会被阻止,当然还要定义一个打破while循环的条件。