From:	"Florent" <florent AT oih DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	read a character string from a serial port ......
Date:	Tue, 15 Aug 2000 23:38:44 +0200
Organization:	Aachen University of Technology (RWTH)
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi,
I manage to read a character from the serial port but I'm having problemes
for reading character string.

Here is my function which read the character string :

int ReceiveString (int ComNo,char *received,int *base) {

  int b,i=0,j=0;
  char string[127];

  string[0]=NULL;

  b = base[ComNo-1];
  if (!b) return 0;

  if ((inportb(b+STATUS) & 1) == 0) return 0;

  while  (inportb(b+STATUS) & 1) {
        inportb(b+STATUS);
        string[i] = inportb (b);
        i++;
        string[i]=NULL;
        delay(1);
  };
  strcpy(received,string);

  return  1;
}

ComNo is the port com choosen, and base are the adress of the serial port.
The things is that I can just read character by character, and sometimes I
miss some character.
I call my function in a loop, in order to get character (or character
string) at any moment.
I tried to put a small delay, but doesn't work well , I miss gain some
characters.
Does the serial port has a buffer ? Can we change the size of this buffer ?
Do you have any clue for my function ?

Thanks for helping me,
best regards,
Florent.

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