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From: papa@bacall.UUCP (Marco Papa)
Newsgroups: comp.sys.amiga
Subject: Re: Need a routine to dectect carrier.
Message-ID: <2385@bacall.UUCP>
Date: Sun, 19-Apr-87 22:45:32 EST
Article-I.D.: bacall.2385
Posted: Sun Apr 19 22:45:32 1987
Date-Received: Wed, 22-Apr-87 00:58:14 EST
References: <3274@burdvax.PRC.Unisys.COM>
Organization: CS&CE Depts, U.S.C., Los Angeles, CA
Lines: 26

William Loftus writes:
> 
> I need a C routine that will return when a caller is detected on my
> modem (i.e. when my modem answers a call from another computer,
> I want to start my program).

It is easy. Just "query" the serial device, and check the status. Code would
look like this:

readrequest->IOSer.io_Command = SDCMD_QUERY;
DoIO(readrequest);
if ((readrequest->io_Status & 0x0020) == 0) {
  /* carrier found */
}

-- Marco

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Marco Papa            3175 S. Hoover St., Ste. 275            (213)747-8498
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