Com_Class.zip_NT serial_class

//============================================================================= // General component library for WIN32 // Copyright (C) 2000, UAB BBDSoft ( http://www.bbdsoft.com/ ) // // This material is provided "as is", with absolutely no warranty expressed // or implied. Any use is at your own risk. // // Permission to use or copy this software for any purpose is hereby granted // without fee, provided the above notices are retained on all copies. // Permission to modify the code and to distribute modified code is granted, // provided the above notices are retained, and a notice that the code was // modified is included with the above copyright notice. // // The author of this program may be contacted at [email protected] //============================================================================= #ifndef _COMPORT_ #include "ComPort.hpp" #endif #ifndef _WINDOWS_ #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif #ifndef _STDEXCEPT_ #include <stdexcept> #endif using namespace std; //---------------------------------------------------------------------------- COMPort::COMPort ( const char * const portName ) : theDCB (NULL) { thePortHandle = (unsigned ) CreateFile ( portName , GENERIC_READ | GENERIC_WRITE , 0 , NULL , OPEN_EXISTING , FILE_FLAG_NO_BUFFERING , NULL ); if (thePortHandle == HFILE_ERROR) { throw runtime_error ("COMPort: failed to open."); } // endif theDCB = new char [sizeof(DCB)]; getState(); setBlockingMode(); setHandshaking(); } // end constructor //---------------------------------------------------------------------------- COMPort::~COMPort() { delete [] theDCB; // close serial port device if (CloseHandle ((HANDLE)thePortHandle) == FALSE ) { throw runtime_error ("COMPort: failed to close."); } // endif } // end destructor //---------------------------------------------------------------------------- void COMPort::getState () const { if (!GetCommState ( (HANDLE) thePortHandle , (LPDCB) theDCB ) ) { throw runtime_error ("COMPort: could not retrieve serial port state."); } // endif } // end COMPort::getState () const //---------------------------------------------------------------------------- COMPort& COMPort::setState () { if (!SetCommState ( (HANDLE) thePortHandle , (LPDCB) theDCB ) ) { throw runtime_error ("COMPort: could not modify serial port state."); } // endif return *this; } // end COMPort::setState () //----------------------------------------------------------------------------- COMPort& COMPort::setBitRate ( unsigned long Param ) { DCB & aDCB = *((LPDCB)theDCB); aDCB.BaudRate = Param; return setState(); } // end COMPort::setBitRate (..) //----------------------------------------------------------------------------- unsigned long COMPort::bitRate() const { DCB & aDCB = *((LPDCB)theDCB); return aDCB.BaudRate; } // end COMPort::bitRate () const //----------------------------------------------------------------------------- COMPort& COMPort::setLineCharacteristics( char * inConfig ) { COMMTIMEOUTS aTimeout; if ( !BuildCommDCBAndTimeouts ( inConfig , (LPDCB)theDCB , &aTimeout ) ) { throw runtime_error ("COMPort: could not set line characteristics."); } // endif if ( ! SetCommTimeouts ( (HANDLE(thePortHandle)) , &aTimeout ) ) { throw runtime_error ("COMPort: could not set line characteristics."); } // endif return setState(); } //---------------------------------------------------------------------------- char COMPort::read () { char buffer; DWORD charsRead = 0; do { if (! ReadFile ( (HANDLE(thePortHandle)) , &buffer , sizeof(char) , &charsRead , NULL ) ) { throw runtime_error ("COMPort: read failed."); } // endif } while ( !charsRead ); return buffer; } // end COMPort::read() //---------------------------------------------------------------------------- unsigned long COMPort::read ( void *inBuffer , const unsigned long inCharsReq ) { DWORD charsRead = 0; if ( !ReadFile ( (HANDLE(thePortHandle)) , inBuffer , inCharsReq , &charsRead , NULL ) ) { throw runtime_error ("COMPort: read failed."); } // endif return charsRead; } // end COMPort::read (..) //---------------------------------------------------------------------------- COMPort & COMPort::write ( const char inChar ) { char buffer = inChar; DWORD charsWritten = 0; if ( !WriteFile ( (HANDLE(thePortHandle)) , &buffer , sizeof(char) , &charsWritten , NULL ) ) { throw runtime_error ("COMPort: write failed."); } // endif return *this; } // end COMPort::write (..) //---------------------------------------------------------------------------- unsigned long COMPort::write ( const void *inBuffer , const unsigned long inBufSize ) { DWORD charsWritten = 0; if ( !WriteFile ( (HANDLE(thePortHandle)) , inBuffer , inBufSize , &charsWritten , NULL ) ) { throw runtime_error ("COMPort: write failed."); } // endif return charsWritten; } // end COMPort::write() //----------------------------------------------------------------------------- COMPort& COMPort::setxONxOFF ( bool Param ) { DCB & aDCB = *((LPDCB)theDCB); aDCB.fOutX = Param ? 1 : 0; aDCB.fInX = Param ? 1 : 0; return setState(); } // end COMPort::setxONxOFF (..) //----------------------------------------------------------------------------- bool COMPort::isxONxOFF () const { DCB & aDCB = *((LPDCB)theDCB); return (aDCB.fOutX && aDCB.fInX); } // end COMPort::isxONxOFF () const //---------------------------------------------------------------------------- COMPort& COMPort::setBlockingMode ( unsigned long inReadInterval , unsigned long inReadMultiplyer , unsigned long inReadConstant ) { COMMTIMEOUTS commTimeout; if ( !GetCommTimeouts ( (HANDLE(thePortHandle)) , &commTimeout ) ) { throw runtime_error ("COMPort: failed to retrieve timeouts."); } // endif commTimeout.ReadIntervalTimeout = inReadInterval; if ( inReadInterval==MAXDWORD ) { commTimeout.ReadTotalTimeoutMultiplier = 0; commTimeout.ReadTotalTimeoutConstant = 0; } else { commTimeout.ReadTotalTimeoutMultiplier = inReadMultiplyer; commTimeout.ReadTotalTimeoutConstant = inReadConstant; } // endifelse if ( !SetCommTimeouts ( (HANDLE(thePortHandle)) , &commTimeout ) ) { throw runtime_error ("COMPort: failed to modify timeouts."); } // endif return *this; } // end COMPort::setBlockingMode (..) //----------------------------------------------------------------------------- COMPort & COMPort::setHandshaking ( bool inHandshaking ) { DCB & aDCB = *((LPDCB)theDCB); if (i