[英]C# Serial Communication for Multi COM Ports
我想使用 RS232 通信將兩個設備與我的計算機通信。 我想從我的計算機向設備發送十六進制命令(0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D)。 我的界面上有 2 個按鈕。 當我按下第一個按鈕時,我會向第一個設備發送一個代碼,當我按下第二個按鈕時,我會向第二個設備發送一個代碼。
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 _2button
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
SerialPort sp = new SerialPort();
sp.PortName = "COM1";
sp.BaudRate = 19200;
sp.DataBits = 8;
sp.Parity = Parity.None;
sp.StopBits = StopBits.One;
//SerialPort sp = new SerialPort("COM1",9600,Parity.None,8,StopBits.One);
sp.Open();
sp.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5D }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D
sp.Close();
}
private void button2_Click(object sender, EventArgs e)
{
SerialPort sp = new SerialPort();
sp.PortName = "COM2";
sp.BaudRate = 19200;
sp.DataBits = 8;
sp.Parity = Parity.None;
sp.StopBits = StopBits.One;
//SerialPort sp = new SerialPort("COM2",9600,Parity.None,8,StopBits.One);
sp.Open();
sp.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5E }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5E
sp.Close();
}
}
}
如何為兩個不同的 COM(COM1 和 COM2)端口發送命令(相同或不同)?
如何使用單個按鈕將相同的命令發送到不同的 COM 端口?
如果您簡單地考慮,您應該執行以下操作。
public partial class Form1 : Form
{
SerialPort sp1 = new SerialPort();
SerialPort sp2 = new SerialPort();
public Form1()
{
InitializeComponent();
}
private void OpenCOM_Click(object sender, EventArgs e)
{
if (!sp1.IsOpen)
{
sp1.PortName = "COM1";
sp1.BaudRate = 19200;
sp1.DataBits = 8;
sp1.Parity = Parity.None;
sp1.StopBits = StopBits.One;
sp1.Open();
}
if (!sp2.IsOpen)
{
sp2.PortName = "COM2";
sp2.BaudRate = 19200;
sp2.DataBits = 8;
sp2.Parity = Parity.None;
sp2.StopBits = StopBits.One;
sp2.Open();
}
}
private void CloseCOM_Click(object sender, EventArgs e)
{
if (sp1.IsOpen)
{
sp1.Close();
}
if (sp2.IsOpen)
{
sp2.Close();
}
}
private void button1_Click(object sender, EventArgs e)
{
sp1.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5D }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D
}
private void button2_Click(object sender, EventArgs e)
{
sp2.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5E }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5E
}
private void button3_Click(object sender, EventArgs e)
{
// same
sp1.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5D }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D
sp2.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5D }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D
}
private void button4_Click(object sender, EventArgs e)
{
// different
sp1.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5D }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D
sp2.Write(new byte[] { 0x06, 0x14, 0x00, 0x04, 0x00, 0x34, 0x11, 0x00, 0x00, 0x5E }, 0, 10); //cmd = 0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5E
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.