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Message-ID: <001501c197a0$49059a30$1400a8c0@alex>
From: "Alex Oleynikov" <alex AT compuweigh DOT com>
To: "ROLAND" <roland_asmann AT yahoo DOT com>
Cc: <djgpp AT delorie DOT com>
References: <20020107162429 DOT 55131 DOT qmail AT web9106 DOT mail DOT yahoo DOT com>
Subject: Re: PMCOM
Date: Mon, 7 Jan 2002 12:25:21 -0500
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Reply-To: djgpp AT delorie DOT com

Roland wrote:

> Could you give me some sort of example of how to do
> this? I'm not sure on how to do this...
>
Here's a simple example of how to do this:

typedef  BOOL  unsigned char
typedef BYTE  unsigned char

#define TRUE    1
#define FALSE    0

#pragma check_stack (off)   //IMPORTANT! Make sure to put this macro before
the Rx handler function's definition
void RxHandler (int Event)
{
    BYTE CharRcvd;

    if( Event == evCOMRx )
    {
      if( COMReadChar(COM1, (char *)&CharRcvd, 0) != 0)
        return;
    }
    else
      return;

    //Put your code here...

    return;
}
END_OF_FUNCTION(RxHandler);  //IMPORTANT! Make sure to put these lines at
the end of the function's definition
#pragma check_stack ()


//Example of the com-port opening code
BOOL OpenPort( void )
{
  if( COMPortOpen(COM1, 19200, 8, 'N', 1, 0, RxHandler) == 0 )
    bPortOpen = TRUE;
  else
    bPortOpen = FALSE;

  return bPortOpen;
}

> Well, at some point a graphical window comes up (not
> mine, because my program is text-based) with the
> following error-message:
>
> The instruction at "0x0f00115e" referenced memory at
> "0xffffffff". The memory could not be "read".
>
Looks like you're using Windows' DOS box. Sorry, I don't have experience
working with this combination. Maybe PMCOM pulls some triggers here while
trying to access COM-Ports, I don't know...


> Maybe you could tell me if there's a new version of
> PMCOM, which has some improvements over this version?
>
Yes, I've got PMCOM v1.1 with some extras in it (e.g. flow control is
working). I also did some fixes on the library code, so if you don't mind
using it I can send you the sources and debug release (this is what I'am
currently using myself).