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Visual basic: Read from an IO port
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Original Message
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Name: eran_benjamin
Date: May 10, 2005 at 08:54:51 Pacific
Subject: Visual basic: Read from an IO portOS: Window98CPU/Ram: AMD2800 |
Comment: Hi,
I need to read from a device that would be connected to an IO port (not the serial port). I have been told that the command in C is 'imp' (import), and that I should treat the IO port as I read from the memory.
I am looking for the parallel comand in VB.
Furthermore I have to sample the port every mili second.
Questions:
1. Please let me know the way to read from the io port (the address is something like - 0x3fff...)
2. Do you know how can I control the frequency in which I read from the IO port? thanks ahead,
Benjamin.
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Response Number 1
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Name: StuartS
Date: May 10, 2005 at 10:51:40 Pacific
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Reply: (edit)You cant. There are no port addressing facilities in VB. The only thing you can do is to write an ActiveX DLL in C++ and call that from VB. Stuart
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Response Number 2
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Name: egkenny
Date: May 10, 2005 at 11:13:02 Pacific
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Reply: (edit)Check out WinIo. You can use the DLL with VB or VC++. http://www.internals.com/ Here are sample programs I have written in Visual Basic 6.0 and Visual C++ 6.0:
https://home.comcast.net/~egkenny/files/WinIO_Examples.zip
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