Re: Slow Read From Serial Port

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#2289

From: Stephan Laska
Date: Wed, 21 Mar 2007 12:34

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"Oliver Rutsch" <orutsch@sympatec.com> wrote in message 
news:4600f62f$1@newsgroups.borland.com...
> Hi Phil,

> I think your problem is not the GetOverlappedResult function (but I
> agree here with Michel's suggestions) but latency issues. It depends on 
> how you're talking with your device. If you do it in the way "command to 
> device - wait for answer from device - next command" then the overall 
> latency is your problem, not the burst speed of the modem connection.

assuming you can bash bits on your embedded controller,
one way to insure that your problem only exists with latency
is to have the controller simply immediately return whatever
it receives, essentially turning it into a loopback connection.
send out a character, measure the round trip time, done.

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From: "Stephan Laska" <Ask & maybe I'll Tell>
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Subject: Re: Slow Read From Serial Port
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