🚀 go-pugleaf

Hi Bogdan,

I use the following code, and it words just fine, this took me several times
to perfect......


    dcbCommPort.DCBlength = sizeof( DCB );
    if ( !GetCommState( hCommHandle, &dcbCommPort ) )
    {
        CloseHandle( hCommHandle );
        return ( FALSE );
    }
    dcbCommPort.fParity         = TRUE;
    dcbCommPort.fBinary         = TRUE;
    dcbCommPort.fDtrControl     = DTR_CONTROL_DISABLE;  // Hardware flow
control
    dcbCommPort.fRtsControl     = DTR_CONTROL_DISABLE;
    dcbCommPort.fInX            = FALSE;      // NO software flow control
    dcbCommPort.fOutX           = FALSE;
    dcbCommPort.fAbortOnError   = 0;
    dcbCommPort.XonChar         = 11;
    dcbCommPort.XoffChar        = 13;
    dcbCommPort.ErrorChar       = 0;
    dcbCommPort.EofChar         = 0;
    dcbCommPort.EvtChar         = 0;
    // other various settings
    dcbCommPort.fOutxCtsFlow  = FALSE;   // CTS output flow control
    dcbCommPort.fOutxDsrFlow  = FALSE;   // DSR output flow control
    dcbCommPort.fDsrSensitivity = FALSE;   // DSR sensitivity
    dcbCommPort.BaudRate     = ulSpeed;
    dcbCommPort.ByteSize     = bData;
    switch ( bStop )
    {
    case 2:
        dcbCommPort.StopBits    = TWOSTOPBITS;
        break;
    case 1:
        dcbCommPort.StopBits    = ONESTOPBIT;
        break;
    }
    switch ( bParity )
    {
    case SERIAL_PARITY_NO:
        dcbCommPort.Parity  = NOPARITY;
        dcbCommPort.fParity = FALSE;
        break;
    case SERIAL_PARITY_EVEN:
        dcbCommPort.Parity  = EVENPARITY;
        dcbCommPort.fParity = TRUE;
        break;
    case SERIAL_PARITY_ODD:
        dcbCommPort.Parity  = ODDPARITY;
        dcbCommPort.fParity = TRUE;
        break;
    case SERIAL_PARITY_MARK:
        dcbCommPort.Parity  = MARKPARITY;
        dcbCommPort.fParity = TRUE;
        break;
    }
    if ( !SetCommState( hCommHandle, &dcbCommPort ) )
    {
        CloseHandle( hCommHandle );
        return ( FALSE );
    }


Hopefully you solve your problem with it.

Regards,

Marc Bertens



"Bogdan" <boprea@xnet.ro> schreef in bericht
news:43c15835$1@newsgroups.borland.com...
> Hello,
>
> I'm trying to communicate between 2 PCs using a serial cable(null modem).
> I've written a dll where I export  the functions I need to initialize,
> read/write and
> shutdown a serial port.The problem is that I only tested it on a single
PC,
> by
> connecting a cable between the 2 COM ports.When i tried the app between 2
> different PC-s it didn' t work anymore.
>  I suspect I do something wrong with the DCB structure used to set up the
> port, but
> i don't know what.This is the code used to init the DCB :
>
> ZeroMemory(&PortDCB,sizeof(DCB));
> PortDCB.DCBlength = sizeof(DCB);
>
> GetCommState(COMPort,&PortDCB);
>
> PortDCB.fOutxCtsFlow      = FALSE;
> PortDCB.fOutxDsrFlow      = FALSE;
> PortDCB.fDtrControl       = DTR_CONTROL_DISABLE;
> PortDCB.fRtsControl       = RTS_CONTROL_DISABLE;
> PortDCB.fOutX             = TRUE;//FALSE;
> PortDCB.fInX              = TRUE;//FALSE;
> //PortDCB.fDsrSensitivity   = FALSE;
> //PortDCB.fTXContinueOnXoff = TRUE;
> //PortDCB.fErrorChar        = FALSE;
> //PortDCB.fNull             = FALSE;
> //PortDCB.fAbortOnError     = FALSE;
>
> PortDCB.BaudRate = Speed;
> PortDCB.fBinary  = TRUE;
> PortDCB.fParity  = TRUE;
> PortDCB.ByteSize = 8;
> PortDCB.Parity   = NOPARITY;
> PortDCB.StopBits = ONESTOPBIT;
>
> Bogdan
>
>