用C#做串口通讯!如何入门?大哥们指点一下!119分感谢!
从没做过串口通讯,不知道如何入门?请大家推荐一些好书,资料 什么的做入门教程! 问题点数：119、回复次数：18Top
1 楼muse2008（沉思）回复于 2004-12-01 17:18:18 得分 9
你上网找一下MSComm控件吧，也会找到一些相关的文章的。Top
2 楼hujiiori（Coder×Coder——sytu）回复于 2004-12-01 17:23:19 得分 0
upTop
3 楼fun1984（funy）回复于 2004-12-01 17:26:19 得分 50
写串口通讯的C#程序建议用下面 的一个通用类
http://blog.csdn.net/fun1984/archive/2004/08/04/60663.aspx
他是把kernel32.dll中用于串口通讯的api转到了C#
可以直接调用
我这里有实例,如果需要给出你 的email吧Top
4 楼diaoerlangdang（）回复于 2004-12-01 17:34:13 得分 0
俺要mengli1198@sina.com.cnTop
5 楼nga96（因为我笨，所以努力。陈勇华）回复于 2004-12-01 17:43:21 得分 0
俺也要nga96@163.comTop
6 楼waximi（阿猫）回复于 2004-12-01 18:00:36 得分 50
using System;
using System.Runtime.InteropServices;
namespace Gccs.Messages {
class CommPort {
public int PortNum;
public int BaudRate;
public byte ByteSize;
public byte Parity; // 0-4=no,odd,even,mark,space
public byte StopBits; // 0,1,2 = 1, 1.5, 2
public int ReadTimeout;
//comm port win32 file handle
private int hComm = -1;
public bool Opened = false;
//win32 api constants
private const uint GENERIC_READ = 0x80000000;
private const uint GENERIC_WRITE = 0x40000000;
private const int OPEN_EXISTING = 3;
private const int INVALID_HANDLE_VALUE = -1;
[StructLayout(LayoutKind.Sequential)]
public struct DCB {
//taken from c struct in platform sdk
public int DCBlength; // sizeof(DCB)
public int BaudRate; // current baud rate
/* these are the c struct bit fields, bit twiddle flag to set
public int fBinary; // binary mode, no EOF check
public int fParity; // enable parity checking
public int fOutxCtsFlow; // CTS output flow control
public int fOutxDsrFlow; // DSR output flow control
public int fDtrControl; // DTR flow control type
public int fDsrSensitivity; // DSR sensitivity
public int fTXContinueOnXoff; // XOFF continues Tx
public int fOutX; // XON/XOFF out flow control
public int fInX; // XON/XOFF in flow control
public int fErrorChar; // enable error replacement
public int fNull; // enable null stripping
public int fRtsControl; // RTS flow control
public int fAbortOnError; // abort on error
public int fDummy2; // reserved
*/
public int fRtsControl; // RTS flow control
public uint flags;
public ushort wReserved; // not currently used
public ushort XonLim; // transmit XON threshold
public ushort XoffLim; // transmit XOFF threshold
public byte ByteSize; // number of bits/byte, 4-8
public byte Parity; // 0-4=no,odd,even,mark,space
public byte StopBits; // 0,1,2 = 1, 1.5, 2
public char XonChar; // Tx and Rx XON character
public char XoffChar; // Tx and Rx XOFF character
public char ErrorChar; // error replacement character
public char EofChar; // end of input character
public char EvtChar; // received event character
public ushort wReserved1; // reserved; do not use
}
[StructLayout(LayoutKind.Sequential)]
private struct COMMTIMEOUTS {
public int ReadIntervalTimeout;
public int ReadTotalTimeoutMultiplier;
public int ReadTotalTimeoutConstant;
public int WriteTotalTimeoutMultiplier;
public int WriteTotalTimeoutConstant;
}
[StructLayout(LayoutKind.Sequential)]
private struct OVERLAPPED {
public int Internal;
public int InternalHigh;
public int Offset;
public int OffsetHigh;
public int hEvent;
}
[DllImport("kernel32.dll")]
private static extern int CreateFile(
string lpFileName, // file name
uint dwDesiredAccess, // access mode
int dwShareMode, // share mode
int lpSecurityAttributes, // SD
int dwCreationDisposition, // how to create
int dwFlagsAndAttributes, // file attributes
int hTemplateFile // handle to template file
);
[DllImport("kernel32.dll")]
private static extern bool GetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
[DllImport("kernel32.dll")]
private static extern bool BuildCommDCB(
string lpDef, // device-control string
ref DCB lpDCB // device-control block
);
[DllImport("kernel32.dll")]
private static extern bool SetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
[DllImport("kernel32.dll")]
private static extern bool GetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
[DllImport("kernel32.dll")]
private static extern bool SetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
[DllImport("kernel32.dll")]
private static extern bool ReadFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToRead, // number of bytes to read
ref int lpNumberOfBytesRead, // number of bytes read
ref OVERLAPPED lpOverlapped // overlapped buffer
);
[DllImport("kernel32.dll")]
private static extern bool WriteFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToWrite, // number of bytes to write
ref int lpNumberOfBytesWritten, // number of bytes written
ref OVERLAPPED lpOverlapped // overlapped buffer
);
[DllImport("kernel32.dll")]
private static extern bool CloseHandle(
int hObject // handle to object
);
[DllImport("kernel32.dll")]
private static extern int MultiByteToWideChar(
int CodePage,
int dwFlags,
string lpMultiByteStr,
int cchMultiByte,
ref byte[] lpWideCharStr,
int cchWideChar);
[DllImport("kernel32.dll")]
private static extern int WideCharToMultiByte(
int CodePage,
int dwFlags,
byte[] lpWideCharStr,
int cchWideChar,
ref byte[] lpMultiByteStr,
int cchMultiByte,
string lpDefaultChar,
string lpUsedDefaultChar);
[DllImport("kernel32.dll")]
private static extern uint GetLastError();
public int MBTW(int CodePage,int dwFlags,string lpMultiByteStr,int cchMultiByte,ref byte[] lpWideCharStr,int cchWideChar){
return MultiByteToWideChar(CodePage,dwFlags,lpMultiByteStr,cchMultiByte, ref lpWideCharStr,cchWideChar);
}
public int WTMB(int CodePage,int dwFlags,byte[] lpWideCharStr,int cchWideChar,ref byte[] lpMultiByteStr,int cchMultiByte,string lpDefaultChar,string lpUsedDefaultChar)
{
return WideCharToMultiByte( CodePage,dwFlags,lpWideCharStr,cchWideChar, ref lpMultiByteStr,cchMultiByte,lpDefaultChar,lpUsedDefaultChar);
}
Top
7 楼waximi（阿猫）回复于 2004-12-01 18:00:43 得分 0
public void Open() {
DCB dcbCommPort = new DCB();
COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
// OPEN THE COMM PORT.
hComm = CreateFile("COM" + PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
// IF THE PORT CANNOT BE OPENED, BAIL OUT.
if(hComm == INVALID_HANDLE_VALUE) {
throw(new ApplicationException("Comm Port Can Not Be Opened"));
}
// SET THE COMM TIMEOUTS.
GetCommTimeouts(hComm,ref ctoCommPort);
ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
ctoCommPort.ReadTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutConstant = 0;
SetCommTimeouts(hComm,ref ctoCommPort);
// SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
GetCommState(hComm, ref dcbCommPort);
dcbCommPort.BaudRate=BaudRate;
dcbCommPort.flags=0;
// dcbCommPort.fRtsControl=1;
//dcb.fBinary=1;
dcbCommPort.flags|=1;
if (Parity>0)
{
//dcb.fParity=1
dcbCommPort.flags|=2;
}
dcbCommPort.Parity=Parity;
dcbCommPort.ByteSize=ByteSize;
dcbCommPort.StopBits=StopBits;
if (!SetCommState(hComm, ref dcbCommPort))
{
//uint ErrorNum=GetLastError();
throw(new ApplicationException("Comm Port Can Not Be Opened"));
}
//unremark to see if setting took correctly
//DCB dcbCommPort2 = new DCB();
//GetCommState(hComm, ref dcbCommPort2);
Opened = true;
}
public void Close() {
if (hComm!=INVALID_HANDLE_VALUE)
{
CloseHandle(hComm);
}
}
public byte[] Read(int NumBytes) {
byte[] BufBytes;
byte[] OutBytes;
BufBytes = new byte[NumBytes];
if (hComm!=INVALID_HANDLE_VALUE) {
OVERLAPPED ovlCommPort = new OVERLAPPED();
int BytesRead=0;
ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
OutBytes = new byte[BytesRead];
Array.Copy(BufBytes,OutBytes,BytesRead);
}
else {
throw(new ApplicationException("Comm Port Not Open"));
}
return OutBytes;
}
public void Write(byte[] WriteBytes) {
if (hComm!=INVALID_HANDLE_VALUE) {
OVERLAPPED ovlCommPort = new OVERLAPPED();
int BytesWritten = 0;
WriteFile(hComm,WriteBytes,WriteBytes.Length,ref BytesWritten,ref ovlCommPort);
}
else {
throw(new ApplicationException("Comm Port Not Open"));
}
}
}
class HexCon {
//converter hex string to byte and byte to hex string
public static string ByteToString(byte[] InBytes) {
string StringOut="";
foreach (byte InByte in InBytes) {
StringOut=StringOut + String.Format("{0:X2} ",InByte);
}
return StringOut;
}
public static byte[] StringToByte(string InString) {
string[] ByteStrings;
ByteStrings = InString.Split(" ".ToCharArray());
byte[] ByteOut;
ByteOut = new byte[ByteStrings.Length-1];
for (int i = 0;i==ByteStrings.Length-1;i++) {
ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));
}
return ByteOut;
}
}
}Top
8 楼waximi（阿猫）回复于 2004-12-01 18:01:57 得分 0
该程序能单独编译通过，调用该程序的函数就可以实现串口操作了。我在此基础上做了短消息的发送与接收功能
Top
9 楼hel（抵制日货，从我做起）回复于 2004-12-01 18:09:38 得分 0
C#2.0framework 包含串口通讯控件。Top
10 楼an_andy（）回复于 2004-12-02 10:28:33 得分 10
http://blog.csdn.net/fun1984/archive/2004/08/04/60663.aspx
Top
11 楼abctop321（开始编程序）回复于 2004-12-02 10:34:21 得分 0
偶也要
rz6315326@126.comTop
12 楼50277（柳影随风）回复于 2004-12-02 20:23:08 得分 0
谢谢！代码还没来得及看！先谢谢了！结帐！Top
13 楼50277（柳影随风）回复于 2004-12-02 20:23:32 得分 0
50277@163.comTop
14 楼lookool（）回复于 2004-12-03 10:34:33 得分 0
你好：我需要这个串口通讯的C#通用类的实例，请寄给我！
lookool@tom.comTop
15 楼XhmDIY（学习..）回复于 2004-12-13 16:38:44 得分 0
xhm200312@163.com
谢谢Top
16 楼Yans（跟贴是一种友谊）回复于 2005-05-29 14:55:37 得分 0
toyan@tom.com
谢谢Top
17 楼lidan9980（如果）回复于 2005-09-08 08:52:27 得分 0
lidan9980@163.com
谢谢Top
18 楼Nemocat（凉风有信）回复于 2005-09-08 16:20:33 得分 0
fengcao1982@126.com
万分感谢Top
