Listening to serial port on Delphi 7

Question

I am trying to write a program which will listen to the serial input from Arduino board connected via usb, and sending output to serial port (COM4). But I don't know how to get input from serial port in Delphi. I need program to listen to the port, and whenever the input comes, it should react to it. Any suggestions?

score 11 · Accepted Answer · answered May 10 '11 at 14:46

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http://sourceforge.net/projects/tpapro/ is a freeware tool we've used with great success for many years.

answered May 10 '11 at 14:46

RobertFrank

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+1 Why was this voted down? It is a wellknown serial lib for Delphi? – Marco van de Voort May 10 '11 at 16:32
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Also works with older versions of Delphi, hurray! +1 – Codebeat Feb 21 '15 at 23:53

Marco van de Voort · Answer 2 · 2011-05-10T18:14:39.050

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The already suggested tpapro will probably also do it, but I myself use TComport, which I consider slightly easier to use. It will has an event property onrxchar that triggers whenever a character arrives (and several options for other kinds of packets, including ASCII linediscipline).

I use it pretty much for the same kind of stuff, albeit with microchips mcus.

edited May 10 '11 at 18:14

answered May 10 '11 at 16:34

Marco van de Voort

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score 0 · Answer 3 · answered May 11 '11 at 22:23

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I've used the Comport library of WinSoft for many... years. It´s excellent (0 bugs) and works with any version of windows.

The link is: http://www.winsoft.sk/comport.htm

answered May 11 '11 at 22:23

Juan Carlos Velez

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Listening to serial port on Delphi 7

3 Answers3