Com Port Data Errors

Camm29 Camm29 at
Wed Dec 14 16:36:33 EST 2005

Going slightly off track here ,
Everything is the same ,hardware and comm settings.
The command sent does not really matter ,
for example i used "AT00" which returns ERROR then CR AND LF and then the
character >

This is the correct response but i can't seem to get Rev to send , receive
and wait for the > character then repeat without it getting missed sends.

if i put a delay before resending of >= 1 second it works fine.(It should be
able to repeat in around 100ms , command send,receive and wait for >)
I may be missing something but what would be the fastest solution


----- Original Message -----
From: "Dar Scott" <dsc at>
To: "How to use Revolution" <use-revolution at>
Sent: Wednesday, December 14, 2005 8:58 PM
Subject: Re: Com Port Data Errors

> On Dec 13, 2005, at 3:32 PM, Camm29 wrote:
> > write "AT00" & numToChar(13) to driver COM1:
> > One point is that with the same command "AT00" , HYPERTERMINAL works
> > always with wait time < 1 second.
> Even though the Hayes-compatible tradition requires a CR to terminate
> the command line, I have seen some modems that want LF in addition or
> instead.  Could your Hyperterminal settings be set to send a LF with
> the CR?
> Also, check your handshake lines.  Make sure you are using the same
> cable as your Hyperterminal experiment.  Then make sure the handshake
> lines work the same.
> BTW, I am not familiar with a digit command, such as 0.  That might be
> something special with your modem or some newfangled thing or something
> cool I just haven't seen.  Or should this be the O command for "Return
> to On-line State"?
> Dar
> --
> ****************************************************
>      Dar Scott  dba  Dar Scott Consulting
>      "Glory to God in the highest,
>      and on earth peace, good will toward men. "
>                     -- Host of angels, Luke 2:14
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