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Path: utzoo!utgpu!water!watnot!watmath!clyde!cbatt!ucbvax!ULKYVX.BITNET!RDROYA01
From: RDROYA01@ULKYVX.BITNET.UUCP
Newsgroups: comp.sys.atari.st
Subject: A flush utility for RS232 I/O
Message-ID: <8702280226.AA01209@ucbvax.Berkeley.EDU>
Date: Fri, 27-Feb-87 12:59:00 EST
Article-I.D.: ucbvax.8702280226.AA01209
Posted: Fri Feb 27 12:59:00 1987
Date-Received: Sun, 1-Mar-87 10:46:46 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: University of Louisville
Lines: 65


 
Someone mentioned having problems with locked up serial lines.  I too have
had that problem before.  I use the short program below to reset the input
and output record.  You may also have to turn off your modem to flush any
buffers it has (at least I have to with my Avatex), but at least you do not
have to reset the ST.  However, flow control will still not work even
though the head and tail indexes are reset, so the explanation of how flow
control is set up given in an earlier message must not be correct.
 
--------------------------- source uuencode follows ---------------------
#include <osbind.h>
 
typedef struct IOSTRUCT {
        long    ibuf;
        int     ibufsiz;
        int     ibufhd;
        int     ibuftl;
        int     ibuflow;
        int     ibufhi;
        long    obuf;
        int     obufsiz;
        int     obufhd;
        int     obuftl;
        int     obuflow;
        int     obufhi;
} IOSTRUCT;
 
main()
{
        register IOSTRUCT *ioptr;
 
        ioptr = (IOSTRUCT *)Iorec(0);
        ioptr->ibufhd = 0;
        ioptr->ibuftl = 0;
        ioptr->ibuflow= 0x40;
        ioptr->ibufhi = 0xc0;
        ioptr->obufhd = 0;
        ioptr->obuftl = 0;
        ioptr->obuflow= 0x40;
        ioptr->obufhi = 0xc0;
        exit(0);
}
 
------------------------ cut - here ---------------------------------
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