www.pudn.com > mod_rssim6.zip > RS232Noise.h

///////////////////////////////////////////////////////////////////////////// 
// 
// FILE : RS232Noise.h: headder file 
// 
// See _README.CPP 
// 
// Interface for the CRS232Noise class. 
// The class takes a parameter to a 232 port, and a telegram, and attempts  
// to corrupt it, thereby simulating real-world noise. there are currently 
// 6 types of noise: 
//    inserts : Adds additional characters anywhere into the transmission 
//    removes : Removes characters from anywhere 
//    misframes : Simulate bad line noise, by changing the port parity and baud rate 
//    corrupts : Replaces any character with another random character 
//    ignore : does not respond at all 
//    slowness/delays : simulates the act of thinking. 
// 
// The chances of an error being injected for any 1 transmission is based on  
// its length and the frequency parameter passed to the class. A frequency of  
// zero injects no errors. 
// 
///////////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_RS232NOISE_H__211E2031_B4D1_424C_BDC8_8E6ED6B307B2__INCLUDED_) 
#define AFX_RS232NOISE_H__211E2031_B4D1_424C_BDC8_8E6ED6B307B2__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
class CRS232Port; 
#define MAXERRORFREQUENCY     100 
 
class CRS232Noise : public CObject   
{ 
public: 
	CRS232Noise(); 
	virtual ~CRS232Noise(); 
    
   // SET methods 
   void SetErrorTypes(LONG freq, 
                      LONG period = 1000,     
                      BOOL inserts = TRUE, 
                      BOOL removes = TRUE,  
                      BOOL misFrames = FALSE, 
                      BOOL corrupts = TRUE, 
                      BOOL ignore = TRUE, 
                      BOOL beep = TRUE 
                      ); 
   LONG InjectErrors(CRS232Port *pPort,  
                     const BYTE *transmitBuffer,  
                     int writeLength, 
                     char *pDebugStr); 
 
   void ReportError(LPCTSTR descr); 
    
   // GET methods 
   LONG MaxErrorFreQ() { return(MAXERRORFREQUENCY);}; 
   void GetErrorTypes(int *freq, 
                      int *period,    // delays by (0=disable) 
                      BOOL *inserts,  
                      BOOL *removes,  
                      BOOL *misFrames, 
                      BOOL *corrupts, 
                      BOOL *ignore, 
                      BOOL *beep 
                      ); 
   // get and clear the error counter 
   LONG NumErrors() {LONG e = m_errorsInjected; \ 
                     m_errorsInjected=0; return(e); }; 
   LONG GetErrorFrequency() { return(m_errorFrequency);}; 
 
   BOOL NukePort(); 
   BOOL UnNukePort(); 
 
private: 
   // data members that contain types of noise we could apply to the comms 
   BOOL  m_insertCharacters; 
   BOOL  m_removeCharacters; 
   BOOL  m_corruptFraming;      // change com port settings to corrupt the data. 
   BOOL  m_modifyCharacters;    // overwrite some characters 
   LONG  m_errorFrequency;      // 
   LONG  m_errorsInjected;      // errors so far 
 
   LONG  m_delaysPeriod;      // 
   BOOL  m_ignoreReq;         // ignore the req (don't send anything) 
   BOOL  m_beep;              // beep afterwards 
 
   BOOL  m_nukedPort;      // nuked Y/N flag 
   DWORD m_oldBaud; 
   DWORD reserved; 
   CRS232Port *m_pPort; 
}; 
 
#endif // !defined(AFX_RS232NOISE_H__211E2031_B4D1_424C_BDC8_8E6ED6B307B2__INCLUDED_)