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Message-ID: <20011219104613.30714.qmail@web9101.mail.yahoo.com>
Date: Wed, 19 Dec 2001 02:46:13 -0800 (PST)
From: ROLAND <roland_asmann AT yahoo DOT com>
Subject: Serial Communication question
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

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Hello,

I have been working on a program that uses serial
communication.
I have rewritten most functions so it uses PMCOM, but
there are some pieces of code I need some help with...
Below is a part of the original UNIX-code and I would
like to know if I need to rewrtie this code to work
with PMCOM or to just pu it in a big #ifdef for
compatibility with UNIX.

Roland


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/************************************************************************/
/*									*/
/*			subroutine termst 				*/
/*									*/
/************************************************************************/

termst()

/* This routine takes care of the terminal-settings.			*/

{
	if(ioctl(f3,TIOCEXCL,"")==0 &&
	   ioctl(f4,TIOCEXCL,"")==0){	/* set exclusive owner of device*/
	    lkterm.sg_ispeed	= bdrate;	/* input baudrate	*/
	    lkterm.sg_ospeed	= bdrate;	/* output baudrate	*/
	    lkterm.sg_erase	= ERASECH;	/* erase character	*/
	    lkterm.sg_kill	= KILLCH;	/* kill character	*/
	    lkterm.sg_flags	= FLAG;		/* communication mode	*/
	    if(ioctl(f3,TIOCSETP,&lkterm)!=0 ||	/* set terminal-	*/
	       ioctl(f4,TIOCSETP,&lkterm)!=0){	/* characteristics	*/
		error("terminalsettings can not be changed",-1,"\n");
		finish(-1);		/* reset exclusive owner	*/
	    }
	}
	else{
	    error("device is busy",-1,"\n");
	    finish(-1);			/* reset exclusive owner	*/
	}
}

/************************************************************************/
/*									*/
/*			subroutine finish				*/
/*									*/
/************************************************************************/

/* The subroutine finish is called to reset the exclusive ownership of	*/
/* the terminal.			 				*/

finish(a)

int	a;			/* return value				*/
{
	ioctl(f3,TIOCNXCL,"");
	ioctl(f4,TIOCNXCL,"");
	exit(a);
}

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