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This page demonstrates how to perform Serial I/O via RS232 using Delphi). Last Modified 09-30-03, links fixed 10-24-09. Delphi 7 XP prof. Hi - I'm using the free Tcomport component for Delphi. Although I do not usually have problems, there is one bugbear that I cant seem to solve. If you have a couple of USB serial converters connected to the PC, sometimes there is a problem with port initialisation.
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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?
Delphi 7 XP prof. Hi - I'm using the free Tcomport component for Delphi. Although I do not usually have problems, there is one bugbear that I cant seem to solve. If you have a couple of USB serial converters connected to the PC, sometimes there is a problem with port initialisation. Delphi: Connecting two computers via the serial port. ZylSerialPort is a Delphi / C++Builder thread based asynchronous serial port component. Use ZylSerialPort component to easily communicate with external devices on serial port connection, such as modems, bar code readers, GSM modules and others.
Tofig HasanovTofig Hasanov
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closed as too broad by MSeifert, greg-449, ivan_pozdeev, EdChum, DavidJan 4 '17 at 10:30
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
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http://sourceforge.net/projects/tpapro/ is a freeware tool we've used with great success for many years.
RobertFrankRobertFrank5,35288 gold badges4646 silver badges9191 bronze badges
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.
Marco van de VoortC++ Builder Usb Component
Marco van de Voort
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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
Juan Carlos VelezJuan Carlos Velez2,19622 gold badges3030 silver badges4747 bronze badges