[英]C# Serial Communication for Multi COM Ports
I want to communicate two devices with my computer using RS232 communication.我想使用 RS232 通信将两个设备与我的计算机通信。 I want to send hex commands (0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D) from my computer to devices.
我想从我的计算机向设备发送十六进制命令(0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D)。 I have 2 buttons on my interface.
我的界面上有 2 个按钮。 When I press the first button, I will send a code to the first device, and when I press the second button, I will send a code to the second device.
当我按下第一个按钮时,我会向第一个设备发送一个代码,当我按下第二个按钮时,我会向第二个设备发送一个代码。
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();
}
}
}
How can I send the command (same or different) for two different COM (COM1 and COM2) ports?如何为两个不同的 COM(COM1 和 COM2)端口发送命令(相同或不同)?
How can I send the same command to different com ports with a single button?如何使用单个按钮将相同的命令发送到不同的 COM 端口?
If you think simply, you should do the following.如果您简单地考虑,您应该执行以下操作。
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
}
}
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