[تنبيه - عنوان غير مناسب : ]مساعدة

تفضل اخي هذا المثال لـ Albert Pascual

ملف الترويسة Header File

__gc class CSerialPort
{
public:
	CSerialPort(void);
	__nogc struct DCB
	{
		int DCBlength;
		int BaudRate;
		int fBinary;
		int fParity;
		int fOutxCtsFlow;
		int fOutxDsrFlow;
		int fDtrControl;
		int fDsrSensitivity;
		int fTXContinueOnXoff;
		int fOutX;
		int fInX;
		int fErrorChar;
		int fNull;
		int fRtsControl;
		int fAbortOnError;
		int fDummy2;
		unsigned short wReserved;
		unsigned short XonLim;
		unsigned char ByteSize;	//byte
		unsigned char Parity; // byte
		unsigned char StopBits;	//byte
		char XonChar;
		char XoffChar;
		char ErrorChar;
		char EofChar;
		char EvtChar;
		unsigned short wReserved1;
	};

	bool	Open( char *szComPort);
	void	Write(String __gc * buf);
	String  *Read();
	void	Close();

private:	
	FileStream	* m_MyFileStream;
	StreamWriter * m_MyStreamWriter;
	StreamReader * m_MyStreamReader;

	static long GENERIC_READ  = 0x80000000L;
	static long GENERIC_WRITE = 0x40000000L;

	static int OPEN_ALWAYS = 4;

	static int FILE_FLAG_NO_BUFFERING = 0x20000000;
	static int FILE_FLAG_OVERLAPPED   = 0x40000000;

};

namespace MyKernel
{
[DllImport("kernel32.dll")]
extern bool SetCommState(System::IntPtr hFile, CSerialPort::DCB * lpDBC);
[DllImport("kernel32.dll")]
extern int CreateFile( char * lpFileName , int dwDesiredAccess, int dwShareMode,
  IntPtr lpSecurityAttributes, int dwCreationDisposition,
  int dwFlagsAndAttributes, IntPtr hTemplateFile );

}

ملف تعريف الدوال

CSerialPort::CSerialPort(void)
{
}

bool CSerialPort::Open( char *szComPort)
{
	int handle;

	handle = MyKernel::CreateFile(
		szComPort,
		GENERIC_READ | GENERIC_WRITE,
		0,
		NULL,
		OPEN_ALWAYS,
		FILE_FLAG_NO_BUFFERING | FILE_FLAG_OVERLAPPED,
		NULL);

	try
	{
		IntPtr	pCom(handle);
		m_MyFileStream = new FileStream(pCom, 
										FileAccess::ReadWrite, 
										true, 1000, true);		
	}

	catch (Exception  * e ) {
		Console::WriteLine(e->ToString());
		  return false;
	  }


	DCB	* CommSettings = new DCB();
	CommSettings->DCBlength = sizeof(CommSettings);
	CommSettings->BaudRate  = 38400;
	CommSettings->ByteSize  = 8;
	CommSettings->Parity	= 0;
	CommSettings->StopBits	= 1;

	MyKernel::SetCommState(m_MyFileStream->get_Handle(), 
						   CommSettings);


	try
	{
		m_MyStreamReader = new StreamReader(m_MyFileStream);
	}

	catch (Exception  * e ) {
		Console::WriteLine(e->ToString());
		  return false;
	  }

	if ( m_MyFileStream->get_CanWrite() )
	{
		try
		{
			m_MyStreamWriter = new StreamWriter(m_MyFileStream);
		}

		catch (Exception  * e ) {
			Console::WriteLine(e->ToString());
			return false;
		}
	}

	return true;
}

void CSerialPort::Write(String __gc * buf)
{
	try
	{
		m_MyStreamWriter->Write(buf);
		m_MyStreamWriter->Flush();	

	}

	catch (Exception  * e ) {
		Console::WriteLine(e->ToString());	
	  }
}

String  * CSerialPort::Read()
{
	String	*buf;

	buf = m_MyStreamReader->ReadLine();

	return (buf);
}

void CSerialPort::Close()
{
	m_MyStreamWriter->Close();
	m_MyStreamReader->Close();
	m_MyFileStream->Close();
}

للتجربة

CSerialPort * pSerial = new CSerialPort;

pSerial->Open(S"COM2:");
Console::WriteLine(pSerial->Read());

ابحث عن هذا الكتاب "USB Complete" by Jan Axelson

تحياتي

العنوان غير مناسب

الرجاء اختيار عنوان مناسب أكثر في مواضيعك القادمة، وهذا بمثابة إشعار للأهمية.

وفي حال التكرار سيتعرض موضوعك للإغلاق والحذف!!!

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