C# 从c中的串行端口读取数据#
几周来,我一直在努力做到这一点,从一些数据中获得所有不同类型的结果,但根本没有,代码和错误的异常。我目前正在尝试编写一个应用程序,将命令发送到串行端口,然后等待响应。我可以正确发送命令,但获取返回数据是一个问题。发送命令后,它应返回256个字节块中的一系列字节,并将它们放入byte[]数组中,直到达到设定的数量,例如256个字节块中的4096个字节。然后把数组传回去,这样我就可以保存到一个文件中,我可以打开创建并保存一个二进制文件,这样就没有问题了,只是串口的东西,我读了很多很多串口的东西,没有一个是简洁的 我已经制作了一个gui,这是迄今为止的代码,请不要介意混乱,因为我说过我正在努力,代码到处都是。我正在使用Visual Studio 2019 C#,如有任何帮助,将不胜感激C# 从c中的串行端口读取数据#,c#,binary,serial-communication,C#,Binary,Serial Communication,几周来,我一直在努力做到这一点,从一些数据中获得所有不同类型的结果,但根本没有,代码和错误的异常。我目前正在尝试编写一个应用程序,将命令发送到串行端口,然后等待响应。我可以正确发送命令,但获取返回数据是一个问题。发送命令后,它应返回256个字节块中的一系列字节,并将它们放入byte[]数组中,直到达到设定的数量,例如256个字节块中的4096个字节。然后把数组传回去,这样我就可以保存到一个文件中,我可以打开创建并保存一个二进制文件,这样就没有问题了,只是串口的东西,我读了很多很多串口的东西,没有
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;
using System.IO;
using System.Threading;
namespace SerialApp1
{
public partial class FormSerial : Form
{
int bytread;
public byte[] spbuf;
bool DataAvailable;
int sport_NumberOfBytesRead;
public FormSerial()
{
InitializeComponent();
GetAvailablePorts();
byte[] spbuf = new byte[256];
}
void GetAvailablePorts()
{
String[] ports = SerialPort.GetPortNames();
cBoxPorts.Items.AddRange(ports);
}
//Serial stuff*****************************************************
void SerialPort1_DataReceived(object Sender, SerialDataReceivedEventArgs e)
{
if (serialPort1.BytesToRead != bytread) // Wrong number of bytes
return; // Does nothing
spbuf = new Byte[bytread];
// Try to read the data
try { sport_NumberOfBytesRead = serialPort1.Read(spbuf, 0, bytread); }
// If error, return failure
catch (Exception) { sport_NumberOfBytesRead = -1; }
DataAvailable = true; // Break read loop
}
void SerialPort1_ErrorReceived(object Sender, SerialErrorReceivedEventArgs e)
{
sport_NumberOfBytesRead = -1; // Flag error occurred
DataAvailable = true; // Break wait loop
}
void GetData(byte[] Buffer, int Len)//, int Nbr)
{
DataAvailable = false; // No data yet
bytread = Len; // Bytes to read
do
{ // Wait till data is available
Thread.Sleep(10);
} while (!DataAvailable);
Buffer = spbuf; // Pass the returned data to the caller
//Nbr = bytread; // Return the number of bytes read
}
//*********************************************************************************
private void btnOpenP_Click(object sender, EventArgs e)
{
try
{
if(cBoxPorts.Text==""||cBoxBaud.Text=="")
{
textBReceive.Text="Please select port settings";
}
else
{
serialPort1.PortName = cBoxPorts.Text;
serialPort1.BaudRate = Convert.ToInt32(cBoxBaud.Text);
serialPort1.Open();
serialPort1.ReadTimeout = 10;
serialPort1.DataReceived += new SerialDataReceivedEventHandler(SerialPort1_DataReceived);
serialPort1.ErrorReceived += new SerialErrorReceivedEventHandler(SerialPort1_ErrorReceived);
btnSend.Enabled = true;
btnReceive.Enabled = true;
btnOpenP.Enabled = false;
btnCloseP.Enabled = true;
textBSend.Enabled = true;
cBoxPorts.Enabled = false;
cBoxBaud.Enabled = false;
progressBar1.Value = 100;
}
}
catch(UnauthorizedAccessException)
{
textBReceive.Text = "Unauthorized Access";
}
}
private void btnCloseP_Click(object sender, EventArgs e)
{
serialPort1.Close();
btnSend.Enabled = false;
btnReceive.Enabled = false;
btnOpenP.Enabled = true;
btnCloseP.Enabled = false;
textBSend.Enabled = false;
cBoxPorts.Enabled = true;
cBoxBaud.Enabled = true;
progressBar1.Value = 0;
}
private void btnSend_Click(object sender, EventArgs e)
{
//serialPort1.WriteLine(textBSend.Text);
string nl = Environment.NewLine;
string sts;
sts = ("R," + textBSAd.Text + "," + textBLng.Text + "," + textBLWdt.Text + nl);
serialPort1.WriteLine(sts);
textBSend.Text = "";
//GetData(spbuf, Convert.ToInt32(textBLng.Text), sport_NumberOfBytesRead);
//GetData(spbuf, 256);
try
{
}
catch (TimeoutException)
{
textBReceive.Text = (textBReceive.Text + nl + "Timeout Exception");
//textBReceive.Text = "Timeout Exception";
}
catch (Exception ex)
{
MessageBox.Show(ex.GetType().ToString()); //will print System.NullReferenceException for example
}
//for (int i = 0; i <= sport_NumberOfBytesRead; i++)//spbuf.Length - 1
// {
// if (i % 8 == 0) { textBReceive.Text = textBReceive.Text + nl + i.ToString("X3") + ": "; }
// textBReceive.Text = (textBReceive.Text += spbuf[i].ToString("X2"));
// textBReceive.Text = (textBReceive.Text += " ");
// }
}
private void btnReceive_Click(object sender, EventArgs e)
{
string nl = Environment.NewLine;
int nbrtr = 256;
try
{
//ReadSerialdata(nbrtr);
textBReceive.Text = textBReceive.Text + serialPort1.ReadLine();
}
catch (TimeoutException)
{
textBReceive.Text = (textBReceive.Text + nl + "Timeout Exception");
//textBReceive.Text = "Timeout Exception";
}
catch (Exception ex)
{
MessageBox.Show(ex.GetType().ToString()); //will print System.NullReferenceException for example
}
}
OpenFileDialog ofd = new OpenFileDialog();
private void btnOBF_Click(object sender, EventArgs e)
{
ofd.ShowDialog();
//BinaryReader br = new BinaryReader(File.OpenRead(ofd.FileName));
byte[] afbytes = File.ReadAllBytes(ofd.FileName);
string nl = Environment.NewLine;
for (int i = 0; i <= afbytes.Length-1; i++)
{
if (i % 8 == 0) { textBReceive.Text = textBReceive.Text + nl + i.ToString("X3") + ": "; }
textBReceive.Text = (textBReceive.Text += afbytes[i].ToString("X2"));
textBReceive.Text = (textBReceive.Text += " ");
}
}
private void btnSend2_Click(object sender, EventArgs e)
{
string nl = Environment.NewLine;
string sts;
sts = ("R," + textBSAd.Text + "," + textBLng.Text + "," + textBLWdt.Text + nl);
serialPort1.WriteLine(sts);
//serialPort1.Write(nl);
//MessageBox.Show(sts);
try
{
ReadSerialdata(256);
//Fill_Txt_Rec();
}
catch (TimeoutException)
{
textBReceive.Text = (textBReceive.Text + nl + "Timeout Exception");
//textBReceive.Text = "Timeout Exception";
}
catch (Exception ex)
{
MessageBox.Show(ex.GetType().ToString()); //will print System.NullReferenceException for example
}
}
public byte[] ReadSerialdata(int numBytes)
{
//byte[] spbuf = new byte[numBytes];
for(int i = 0; i <= numBytes-1; i++)
{
spbuf[i] = (byte)serialPort1.ReadByte();
}
//serialPort1.ReadByte();
foreach(byte bytVal in spbuf)
{
textBReceive.Text = (textBReceive.Text += (spbuf[bytVal].ToString("X2") + " "));
}
return spbuf;
}
private void Fill_Txt_Rec()
{
string nl = Environment.NewLine;
for (int i=0; i >= spbuf.Length; i++)
{
if (i % 8 == 0) { textBReceive.Text = textBReceive.Text + nl + i.ToString("X3") + ": "; }
textBReceive.Text = (textBReceive.Text += spbuf[i].ToString("X2"));
textBReceive.Text = (textBReceive.Text += " ");
}
}
}
}
使用系统;
使用System.Collections.Generic;
使用系统组件模型;
使用系统数据;
使用系统图;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用System.Windows.Forms;
使用System.IO.Ports;
使用System.IO;
使用系统线程;
命名空间SerialApp1
{
公共部分类FormSerial:Form
{
int bytread;
公共字节[]spbuf;
布尔数据可用;
int sport_编号字节读取;
public FormSerial()
{
初始化组件();
getAvailableReports();
字节[]spbuf=新字节[256];
}
void getAvailableReports()
{
String[]ports=SerialPort.GetPortNames();
cBoxPorts.Items.AddRange(端口);
}
//连载材料*****************************************************
无效SerialPort1_DataReceived(对象发送方,SerialDataReceivedEventArgs e)
{
if(serialPort1.BytesToRead!=bytread)//字节数错误
return;//什么也不做
spbuf=新字节[bytread];
//尝试读取数据
请尝试{sport_NumberOfBytesRead=serialPort1.Read(spbuf,0,bytread);}
//如果出现错误,则返回失败
catch(异常){sport_NumberOfBytesRead=-1;}
DataAvailable=true;//中断读取循环
}
无效SerialPort1\u ErrorReceived(对象发送方,SerialErrorReceivedEventArgs e)
{
sport_NumberOfBytesRead=-1;//发生标志错误
DataAvailable=true;//中断等待循环
}
void GetData(字节[]缓冲区,int Len)/,int Nbr)
{
DataAvailable=false;//还没有数据
bytread=Len;//要读取的字节
做
{//等待数据可用
睡眠(10);
}而(!数据可用);
Buffer=spbuf;//将返回的数据传递给调用方
//Nbr=bytread;//返回读取的字节数
}
//*********************************************************************************
私有void btnOpenP_单击(对象发送方,事件参数e)
{
尝试
{
if(cBoxPorts.Text==“”| | cBoxBaud.Text==“”)
{
textBReceive.Text=“请选择端口设置”;
}
其他的
{
serialPort1.PortName=cBoxPorts.Text;
serialPort1.BaudRate=转换为32(cBoxBaud.Text);
serialPort1.Open();
serialPort1.ReadTimeout=10;
serialPort1.DataReceived+=新的SerialDataReceiveDevenHandler(serialPort1\u DataReceived);
serialPort1.ErrorReceived+=新的SerialErrorReceivedEventHandler(serialPort1\u ErrorReceived);
btnSend.Enabled=true;
btnReceive.Enabled=true;
btnOpenP.Enabled=false;
btnCloseP.Enabled=true;
textBSend.Enabled=true;
cBoxPorts.Enabled=false;
cBoxBaud.Enabled=false;
progressBar1.值=100;
}
}
捕获(未经授权的访问例外)
{
textBReceive.Text=“未经授权的访问”;
}
}
私有void btnCloseP_单击(对象发送者,事件参数e)
{
serialPort1.Close();
btnSend.Enabled=false;
btnReceive.Enabled=false;
btnOpenP.Enabled=true;
btnCloseP.Enabled=false;
textBSend.Enabled=false;
cBoxPorts.Enabled=true;
cBoxBaud.Enabled=true;
progressBar1.值=0;
}
私有无效BTN发送\单击(对象发送方,事件参数e)
{
//serialPort1.WriteLine(textBSend.Text);
字符串nl=Environment.NewLine;
字符串sts;
sts=(“R、+textbad.Text+”、“+textBLng.Text+”、“+textBLWdt.Text+nl”);
串行端口1.写线(sts);
textBSend.Text=“”;
//GetData(spbuf,Convert.ToInt32(textBLng.Text),sport_NumberOfBytesRead);
//GetData(spbuf,256);
尝试
{
}
捕获(超时异常)
{
textBReceive.Text=(textBReceive.Text+nl+“超时异常”);
//textBReceive.Text=“超时异常”;
}
捕获(例外情况除外)
{
MessageBox.Show(例如GetType().ToString());//将打印System.NullReferenceException
}
//对于(int i=0;i Hi,具体是什么