c#用串口传输二进制文件 xmodem协议
代码是项目中拷出来的，俗称刷机软件，绝对可用，缺少的控件和变量名自己补齐就好
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.IO.Ports;
using System.Linq;
using System.Net; //引入socket命名
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.VisualBasic;
1、第一步，打开二进制文件并存为list
OpenFileDialog openFileDialog1 = new OpenFileDialog(); //定义打开文本位置的类
openFileDialog1.Filter = "Bin Files (.bin)|*.bin|所有文件 (*.*)|*.*";//文件筛选器的设定
openFileDialog1.FilterIndex = 1;
openFileDialog1.FileName = "";
openFileDialog1.ShowReadOnly = true;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
tbx_FileName.Text = openFileDialog1.FileName;
try
{
Open_File_list.Clear();
FileStream fs = new FileStream(openFileDialog1.FileName, FileMode.Open);//初始化文件流
BinaryReader sr = new BinaryReader(fs);
sr.BaseStream.Seek(0, SeekOrigin.Begin);
Open_File_array_length = (int)fs.Length;
for (int i = 0; i < Open_File_array_length; i++)
{
byte tmp = sr.ReadByte();
Open_File_list.Add(tmp);
}
//关闭此StreamReader对象
sr.Close();
fs.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
2、第二步创建一个线程发送list，用到xmodem协议
private void sendFile()
{
ComThread_Run_Flag = false;
btn_SendFile.Enabled = false;
Timer1_Run_Flag = true;
rcv_buffer = new byte[255]; //创建数字缓存区
send_buffer = new byte[1029]; //创建缓存区 1024 for XModem 1k + 3 head chars + 2 crc
packetno = 1;
complate_sz = 0; //已经发送的字节数
totle_sz = 0; //需要发送数据包的长度
remnant_sz = 0; //剩余长度
complate = false; //发送完成标志位
done = true; //串口发送文件结束的标记
//string return_data = ""; //返回值
Send_Times = 0; //重发次数
while (done)
{
Thread.Sleep(10);
Per_Sec_Count++;
if (Per_Sec_Count > MAX_WAIT_C_SEC * 500)
{
done = false;
Per_Sec_Count = 0;
btn_SendFile.Enabled = true;
ComThread_Run_Flag = true;
//Timer1_Run_Flag = false;
toolStripProgressBar1.Value = 0;//设置当前值
MessageBox.Show("接收超时", "发送文件", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
int rcv_DataLen = serialPort1.BytesToRead; //接收的字节数
if (rcv_DataLen > 0)
{
serialPort1.Read(rcv_buffer, 0, rcv_DataLen);//把数据读入缓存区
//Console.WriteLine("rcv_buffer0:{0}", rcv_buffer[0].ToString("X2") + " ");
//AddContent(rcv_buffer[0].ToString("X2")+"\n", "Green");
// Console.WriteLine("totle_sz:{0} complate_sz:{1} remnant_sz{2}", totle_sz, complate_sz, remnant_sz);
AddContent("<"+DateTime.Now.ToString ("HH:mm:ss")+">" +"已完成："+complate_sz+"/"+totle_sz+"\n" ,"Green");
//this.AddData(rcv_buffer, rcv_DataLen);//输出显示数据
// BarCountRx.Text = Convert.ToString(Convert.ToInt32(BarCountRx.Text) + rcv_DataLen); //接收字节计数
rcv_DataLen += rcv_buffer.Length;
BarCountRx.Text = Convert.ToString(rcv_DataLen); //接收字节计数
if (rcv_buffer[0] == POLL)
{
Per_Sec_Count = 0;
totle_sz = Open_File_array_length;
packetno = 1;
complate_sz = 0;
Send_Times = 0;
toolStripProgressBar1.Maximum = (int)totle_sz;
toolStripProgressBar1.Value = 0;//设置当前值
goto send_data;
}
else if (rcv_buffer[0] == ACK)
{
Per_Sec_Count = 0;
complate_sz = complate_sz + remnant_sz;
toolStripProgressBar1.Value = complate_sz;
toolStripStatusLabel3.Text = (Convert.ToDouble(complate_sz) / Convert.ToDouble(totle_sz)*100).ToString().Substring(0,2) + "%";
if (complate_sz < totle_sz)
{
Send_Times = 0;
packetno++;
goto send_data;
}
else
{
if (complate == true)
{
done = false;
Per_Sec_Count = 0;
btn_SendFile.Enabled = true;
ComThread_Run_Flag = true;
//Timer1_Run_Flag = false;
toolStripProgressBar1.Value = 0;//设置当前值
MessageBox.Show("发送完成", "发送文件", MessageBoxButtons.OK, MessageBoxIcon.Information);
flag_time = true;
beforDT = System.DateTime.Now;
return;
}
else
{
goto send_data;
}
}
}
else if (rcv_buffer[0] == NAK)
{
Per_Sec_Count = 0;
goto send_data;
}
else if (rcv_buffer[0] == CAN)
{
done = false;
Per_Sec_Count = 0;
btn_SendFile.Enabled = true;
ComThread_Run_Flag = true;
//Timer1_Run_Flag = false;
toolStripProgressBar1.Value = 0;//设置当前值
MessageBox.Show("强制结束", "发送文件", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
done = false;
Per_Sec_Count = 0;
btn_SendFile.Enabled = true;
ComThread_Run_Flag = true;
//Timer1_Run_Flag = false;
toolStripProgressBar1.Value = 0;//设置当前值
MessageBox.Show("发送错误", "发送文件", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
send_data:
try
{
if (Send_Times < MAX_RSEND)
{
send_buffer[0] = STX;
send_buffer[1] = packetno;
send_buffer[2] = (byte)(~packetno);
remnant_sz = totle_sz - complate_sz;
if (remnant_sz > Per_Pack_Sz)
{
remnant_sz = Per_Pack_Sz;
}
if (remnant_sz > 0)
{
//Array.Copy(Open_File_array, complate_sz, send_buffer, 3, remnant_sz);
Open_File_list.CopyTo(complate_sz, send_buffer, 3, remnant_sz);
if (remnant_sz < Per_Pack_Sz) //数据不足一包完整的数据包
{
for (int i = 3 + remnant_sz; i < Per_Pack_Sz + 3; i++)
{
send_buffer[i] = CTRLZ;
}
}
int CRC = u16CRCVerify(send_buffer, 3, Per_Pack_Sz);
send_buffer[Per_Pack_Sz + 3] = (byte)((CRC >> 8) & 0xFF);
send_buffer[Per_Pack_Sz + 4] = (byte)((CRC) & 0xFF);
for (int j = 0; j < Per_Pack_Sz + 5; j++)
{
Console.Write(send_buffer[j].ToString("X2") + " ");
}
Console.WriteLine("");
this.serialPort1.Write(send_buffer, 0, Per_Pack_Sz + 5);
Send_Times++;
}
else
{
byte[] buffer2 = new byte[1];
buffer2[0] = EOT;
for (int j = 0; j < 1; j++)
{
Console.Write(buffer2[j].ToString("X2") + " ");
}
Console.WriteLine("");
this.serialPort1.Write(buffer2, 0, 1);
complate = true;
}
}
else
{
done = false;
Send_Times = 0;
Per_Sec_Count = 0;
btn_SendFile.Enabled = true;
ComThread_Run_Flag = true;
//Timer1_Run_Flag = false;
toolStripProgressBar1.Value = 0;//设置当前值
MessageBox.Show("发送错误", "发送文件", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
}
}