Re: Listening to a rs232 com port ?
- From: "jmverdi" <jmverdi@xxxxxxxxxxxxx>
- Date: Wed, 18 Jun 2008 15:46:58 +0200
you need two more com port, on the same pc or on another one
lets say they are on the same pc (com1, com2 com3) and lets say com1 is
opened by the main program. So you cannot open com1 again.
What you have to do is:
You deconnect the cable which arrive in com1 and connect it to com2.
You connect a null modem cable between com3 and com1.
Then you write a simple program which open com2 and com3: you just read all
what comes in com2, and send it exactly from com3.
Then the main program receives all what it does (sended by com3 port) and
you have read it just before. Without open com1.
Its exactly the same if com2 and com3 are on another pc.
"Eddy Fontaine" <eddy.fontaine@xxxxxxxxxx> a écrit dans le message de
news:9ET5k.19416$312.10562@xxxxxxxxxxxxxxxx
Hi,components
What i would like to do, its listening to a com port, without using (
opening ) it...
It is rs232 "sniffing" really...
Any idea where to start, how its works, and if there are delphi
available for this ?
Thanks,
Eddy.
.
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- From: Eddy Fontaine
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