mcs51 串口通信单片机发 pc收

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
using System.Threading;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
       // SerialPort SpSMS = new SerialPort("COM3", 300, 0, 8, StopBits.One);
        SerialPort serialPort1 = new SerialPort();
        public Form1()
        {
            InitializeComponent();
        }

        private  void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {

            int num; //获取缓冲数据个数
            num = serialPort1.BytesToRead;
            byte[] data = new byte[num];
            serialPort1.Read(data, 0, num);  //读数

        }

        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM3";  //端口号
            serialPort1.BaudRate = 1200;   //比特率
            serialPort1.Parity = Parity.None;//奇偶校验
            serialPort1.StopBits = StopBits.One;//停止位
            serialPort1.ReadTimeout = 1000; //读超时，即在1000内未读到数据就引起超时异常
            serialPort1.Open();//端口打开
            serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);//过程注册           
        }

        private void button2_Click(object sender, EventArgs e)
        {
            serialPort1.Close();//关闭串口  
        }

        
    }
}

mcs51代码：C语言串口通讯.7z

/*  11.0592MHz,  波特率1200  */

#include<reg51.h>
#include<stdio.h>//头文件

void main(void)//主程序
{
   SCON=0x50;//串口方式1，允许接收
   TMOD=0x20;//定时器1，定时方式2
   TCON=0x40;//设定时器1开始计数
   TH1=0xE8;//11.0592MHz, 1200波特率
   TL1=0xE8;
   TI=1;
   TR1=1;
   
  while(1)
     {
        printf("Hello ni hao!");
     }
}

mcs51 串口通信 单片机发 pc收

mcs51 串口通信单片机发 pc收