www.pudn.com > mod_rssim6.zip > RS232Port.h

///////////////////////////////////////////////////////////////////////////// 
// 
// FILE: RS232Port.cpp : headder file 
// 
// See _README.CPP 
// 
// interface for the CRS232Port class. 
// Requires MFC headder  
///////////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_RS232PORT_H__19C837A9_9EB1_408D_83F7_6D85FDEF9739__INCLUDED_) 
#define AFX_RS232PORT_H__19C837A9_9EB1_408D_83F7_6D85FDEF9739__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
extern CHAR * GetLongComPortName(LPCTSTR portName, LPSTR newName); 
extern CHAR * FixComPortName(CHAR *portName); 
 
 
#define RSPORTCURRENTLY_VOID        0 
#define RSPORTCURRENTLY_READING     1 
#define RSPORTCURRENTLY_WRITTING    2 
#define RSPORTCURRENTLY_CLOSING     3 
#define RSPORTCURRENTLY_OPENING     4 
#define RSPORTCURRENTLY_IDLE        5 
 
 
// server thread states 
#define RS232_EX_PENDING	      0 
#define RS232_EX_SUSPENDED       1 
#define RS232_EX_RUNNING	      2 
#define RS232_EX_TERMINATE       3 
#define RS232_EX_TERMINATED      4 
 
 
// # milliseconds to wait before discarding buffer contents 
#define PORT_MAX_IDLETIME     10000 //after 10 seconds, kill all chars in the buffer 
 
extern char commsParityStr[];   //NOPARITY ODDPARITY EVENPARITY MARKPARITY SPACEPARITY 
extern char commsStopStr[][4]; 
 
 
class CRS232Port : public CObject   
{ 
public: 
 
   DECLARE_DYNAMIC(CRS232Port) 
 
	CRS232Port(); 
	virtual ~CRS232Port(); 
 
   BOOL OpenPort(LPCTSTR oPortName); 
   BOOL ConfigurePort(DWORD  baud,  
                      DWORD byteSize,  
                      DWORD parity,  
                      DWORD stopBits, 
                      DWORD rts, 
                      DWORD checkParity=TRUE); 
   BOOL ClosePort(); 
 
   BOOL Purge(); 
   LONG Recieve(DWORD *numberOfBytesRead, CHAR* bufferPtr, CHAR* debugStrPtr); 
   LONG Send(int numberOfBytestoWrite, const BYTE* bufferPtr, CHAR* debugStrPtr); 
 
   // user must derive from this class and override this method. 
//   virtual BOOL ProcessData(const CHAR *pBuffer, DWORD numBytes) = NULL; 
   virtual void OnHWError(DWORD dwCommError); 
   virtual BOOL OnProcessData(const CHAR *pBuffer, DWORD numBytes, BOOL *discardData) = NULL; 
 
   // overridable notification functions 
   virtual void RSStateChanged(DWORD state); 
   virtual void RSDataDebugger(const BYTE * buffer, LONG length, BOOL transmit) = NULL; 
   virtual void RSDataMessage(LPCTSTR msg) = NULL; 
 
   void Poll(CHAR * debugStr); 
   UINT friend AsyncFriend(LPVOID pParam); 
 
   BOOL ReConfigurePort(); 
 
   // diagnostic 
#ifdef _DEBUG 
   VOID Dump(CDumpContext& dc) const; 
#endif 
 
public: 
   CString portNameS; // short (display) port name 
   CEvent  m_threadStartupEvent; 
   CEvent  m_threadDeadEvent; 
   CWinThread *       m_pWorkerThread; 
 
   DWORD m_debuggerStep; 
   HANDLE   h232Port;   // a handle 
   DWORD m_listenThreadStatus; 
   BOOL  m_masterHasWork;        // if TRUE, then do not RX 
   BOOL  keepPolling; 
   DWORD m_lastCharIncommingtime; 
 
private: 
   CRITICAL_SECTION   critSec;   //sync object for this class 
   CString  portName;   // long port name 
   DCB      dcb;        // settings Device context block 
 
   BYTE  rxBuffer[1024];  //keep space for up to 2 messages 
   DWORD rxBufferIndex;   // index to past last usable byte (is also the length) 
}; 
 
 
 
#endif // !defined(AFX_RS232PORT_H__19C837A9_9EB1_408D_83F7_6D85FDEF9739__INCLUDED_)