🚀 go-pugleaf

Hi, i don't know what's happened but suddenly it's stoped working,
few hours ago i checked it and it wokred just fine, the parity
flag 'fParity' was '1' ( = Enabled ) and i saw on the scope 
device the parity bit, but suddenly it stoped working, here is 
my code, near it's bottom you can see the line "k = k;" , just 
after i sucessfuly read the state of the port, when the
program reach to the breakpoint that i put on this line, i can 
see in the watch that 'my_DCB.fParity' value is zero ( 0 = 
Disabled )although that as you can see at the beginning of the
function i set "my_DCB.fParity  = 1;", so how come it's suddenly
changing to '0' ??

Here is my code, thanks!

Ramy

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Initialize communication port for transmit and recieve data

int InitCommunication( void )
{
  COMMTIMEOUTS read_timeout;			                               // timeout structure
  char    com_params[60];
  char    ComName[30];
  HANDLE  ComHndl = NULL;
  DCB     my_DCB;                                                              // device control block structure
  int     fSuccess;

  if ( SystemInfo.ErrorInfo.Status != NO_ERRORS )                              // If Error -> Exit
    return 0;

  if ( SystemInfo.ComInfo.ComHandle )                                          // If Port already open
  {
    CloseHandle( SystemInfo.ComInfo.ComHandle );                               // Close Port
    SystemInfo.ComInfo.ComHandle = NULL;                                       // Reset Port Handle
  }

  my_DCB.DCBlength= sizeof( my_DCB );                                          // Sizeof(DCB)
  my_DCB.BaudRate = SystemInfo.ComInfo.BaudRate;                               // Current baud rate
  my_DCB.fBinary  = true;                                                      // Binary mode, no EOF check
  my_DCB.ByteSize = 8;                                                         // Number of bits/byte, 4-8

  my_DCB.Parity   = (char)SystemInfo.ComInfo.Parity;                           // 0-4=no, odd, even, mark, space
  my_DCB.fParity  = 1;                                                         // 1 = Enable Parity Checking

  my_DCB.StopBits          = 1;                                                // 0, 1, 2 = 1, 1.5, 2
  my_DCB.fOutxCtsFlow      = 0;                                                // CTS output flow control
  my_DCB.fOutxDsrFlow      = 0;                                                // DSR output flow control
  my_DCB.fDtrControl       = DTR_CONTROL_ENABLE;                               // DTR flow control type
  my_DCB.fDsrSensitivity   = 0;                                                // DSR sensitivity
  my_DCB.fTXContinueOnXoff = 0;                                                // XOFF continues Tx
  my_DCB.fOutX      = 0;                                                       // XON/XOFF out flow control
  my_DCB.fInX       = 0;                                                       // XON/XOFF in flow control
  my_DCB.fErrorChar = 0;                                                       // Enable error replacement
  my_DCB.fNull      = false;                                                   // Enable null stripping
  my_DCB.fRtsControl = RTS_CONTROL_ENABLE;                                     // RTS flow control
  my_DCB.fAbortOnError = 0;                                                    // Abort reads/writes on error
  my_DCB.XonLim    = 50;                                                       // Transmit XON threshold
  my_DCB.XoffLim   = 50;                                                       // Transmit XOFF threshold
  my_DCB.XonChar   = 0;                                                        // Tx and Rx XON character
  my_DCB.XoffChar  = 0;                                                        // Tx and Rx XOFF character
  my_DCB.ErrorChar = 0;                                                        // Error replacement character
  my_DCB.EofChar   = 0;                                                        // End of input character
  my_DCB.EvtChar   = 0;                                                        // Received event character
  read_timeout.ReadIntervalTimeout = 0;                                        // Read Interval Timeout
  read_timeout.ReadTotalTimeoutMultiplier = 0;                                 // Read Total Timeout Multiplier
  read_timeout.ReadTotalTimeoutConstant = SystemInfo.ComInfo.RxTimeout;        // Read Total Timeout Constant
  read_timeout.WriteTotalTimeoutMultiplier = 0;                                // Write Total Timeout Multiplier
  read_timeout.WriteTotalTimeoutConstant = SystemInfo.ComInfo.TxTimeout;       // Write Total Timeout Constant
  strcpy( com_params, SystemInfo.ComInfo.ComPort );                            // Prepare com_params
  strcpy( ComName, SystemInfo.ComInfo.ComPort );                               // Set ComName

  switch ( SystemInfo.ComInfo.BaudRate )
  {
    case CBR_9600:
      strcat( com_params, ":9600" );                                  // Prepare COM Parameters
     break;

    case CBR_14400:
      strcat( com_params, ":14400" );                                 // Prepare COM Parameters
     break;

    case CBR_19200:
      strcat( com_params, ":19200" );                                 // Prepare COM Parameters
     break;

    case CBR_38400:
      strcat( com_params, ":38400" );                                 // Prepare COM Parameters
     break;

    case CBR_56000:
      strcat( com_params, ":56000" );                                 // Prepare COM Parameters
     break;

    case CBR_57600:
      strcat( com_params, ":57600" );                                          // Prepare COM Parameters
     break;

    case CBR_115200:
      strcat( com_params, ":115200" );                                         // Prepare COM Parameters 
     break;
  };

  if ( my_DCB.fParity == 1 )                                                   // If Parity Checking Enabled 
  {
    switch( my_DCB.Parity )                                                    // Switch By Parity Value 
    {
      case SPACEPARITY:
        strcat( com_params, ", S, 8, 1" );                                     // Set Parity to '1' 
       break;

      case MARKPARITY:
        strcat( com_params, ", M, 8, 1" );                                     // Set Parity to '0'   
       break;
    }
  }

  ComHndl = CreateFile( ComName, GENERIC_WRITE + GENERIC_READ, 0, NULL,        // Open the asked Com Port
                        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );

  if ( ComHndl == INVALID_HANDLE_VALUE )                                       // Check COM Handle
    return FAIL;

  if ( !BuildCommDCB( com_params, &my_DCB ) )                                  // Fills DCB Structure with Com Values
   return FAIL;

  if ( !SetCommState( ComHndl, &my_DCB ) )                                     // Configures Com Port
    return FAIL;

  if ( !SetCommTimeouts( ComHndl, &read_timeout ) )                            // Set Tx & Rx Timeouts
    return FAIL;

  SystemInfo.ComInfo.ComHandle = ComHndl;                                      // Set Communication Handle

  fSuccess = GetCommState( ComHndl, &my_DCB );

  if ( fSuccess )
  {
    int k = 0;
    k = k;
  }

  return PASS;   		                                               // COM Init was successful
}