c# 实现串口编程-操作LED屏幕

c# 实现串口编程-操作LED屏幕

串口编程主要用到SerialPort这个类，主要实现对串口发送字节数组然后点阵屏显示相关信息，其实这个功能很简单下面给大家把整体思路用流程图展现如下：

其实整体思路就如流程图。下面是整个流程图的一个实现代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO.Ports;
using System.Threading;

namespace portchart
{
class Serilaztion
{
SerialPort _serialPort;
public Serilaztion(string com)
{
_serialPort = new SerialPort();
_serialPort.PortName = com;
_serialPort.BaudRate = 4800;
_serialPort.Parity = Parity.None;
_serialPort.DataBits = 8;
_serialPort.StopBits = StopBits.One;
_serialPort.ReadBufferSize = 4096;
_serialPort.Handshake = Handshake.None;
_serialPort.ReadTimeout = 500;
_serialPort.WriteTimeout = 500;
_serialPort.Open();
}
private static byte[] strToToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString += " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i++)
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}
public static string StringToHexString(string s, Encoding encode)
{
byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组
string result = string.Empty;
for (int i = 0; i < b.Length; i++)//逐字节变为16进制字符，以%隔开
{
result += Convert.ToString(b[i], 16);

        }
        return result;
    }

    public void SendMessage(string message, string com,string type)
    {
        System.Text.Encoding GB2312 = System.Text.Encoding.GetEncoding("GB2312");
        message = message.Trim();
        string kzm = "1B0104"; //开始码
        string hh = StringToHexString(message, GB2312);
        string js = "0D00"; //结束码
        string zf = kzm + hh + js;
        string s = "1B010320202020C7EB20C9CF20CFDF202020200D00";

        byte[] by = strToToHexByte(zf);
        byte[] bt = strToToHexByte(s);

            _serialPort.Write(by, 0, by.Length);
            _serialPort.Write(bt, 0, bt.Length);

    }
    public void Close()
    {
        _serialPort.Close();
    }
    public static string SetPortName(string defaultPortName)
    {
        string portName;

        Console.WriteLine("验证端口:");
        foreach (string s in SerialPort.GetPortNames())
        {
            Console.WriteLine("   {0}", s);
        }

        Console.Write("请输入Com端口(默认: {0}): ", defaultPortName);
        portName = Console.ReadLine();

        if (portName == "" || !(portName.ToLower()).StartsWith("com"))
        {
            portName = defaultPortName;
        }
        return portName;
    }

    public static int SetPortBaudRate(int defaultPortBaudRate)
    {
        string baudRate;

        Console.Write("设置波特率(默认:{0}): ", defaultPortBaudRate);
        baudRate = Console.ReadLine();

        if (baudRate == "")
        {
            baudRate = defaultPortBaudRate.ToString();
        }

        return int.Parse(baudRate);
    }

    public static Parity SetPortParity(Parity defaultPortParity)
    {
        string parity;

        Console.WriteLine("验证奇偶校验位:");
        foreach (string s in Enum.GetNames(typeof(Parity)))
        {
            Console.WriteLine("   {0}", s);
        }

        Console.Write("进入校验位 (默认: {0}):", defaultPortParity.ToString(), true);
        parity = Console.ReadLine();

        if (parity == "")
        {
            parity = defaultPortParity.ToString();
        }

        return (Parity)Enum.Parse(typeof(Parity), parity, true);
    }

    public static int SetPortDataBits(int defaultPortDataBits)
    {
        string dataBits;
        Console.Write("设置每个字节的标准数据位长度 (默认: {0}): ", defaultPortDataBits);
        dataBits = Console.ReadLine();
        if (dataBits == "")
        {
            dataBits = defaultPortDataBits.ToString();
        }
        return int.Parse(dataBits.ToUpperInvariant());
    }

    public static StopBits SetPortStopBits(StopBits defaultPortStopBits)
    {
        string stopBits;
        Console.WriteLine("设置每个字节的标准停止位数:");
        foreach (string s in Enum.GetNames(typeof(StopBits)))
        {
            Console.WriteLine("   {0}", s);
        }

        stopBits = Console.ReadLine();
        if (stopBits == "")
        {
            stopBits = defaultPortStopBits.ToString();
        }
        return (StopBits)Enum.Parse(typeof(StopBits), stopBits, true);
    }
    public static Handshake SetPortHandshake(Handshake defaultPortHandshake)
    {
        string handshake;

        Console.WriteLine("设置串行端口数据传输的握手协议:");
        foreach (string s in Enum.GetNames(typeof(Handshake)))
        {
            Console.WriteLine("   {0}", s);
        }
        Console.Write("端口数据传输的握手协议(默认: {0}):", defaultPortHandshake.ToString());
        handshake = Console.ReadLine();
        if (handshake == "")
        {
            handshake = defaultPortHandshake.ToString();
        }
        return (Handshake)Enum.Parse(typeof(Handshake), handshake, true);
    }
}

}

上面我把串口的参数固定了，可以根据自己的需求设置自己要传的参数。

转至：https://www.cnblogs.com/dashouqianxiaoshou/p/4272820.html