Hi Kim,

I'm currently looking into the situation of making VB6 read and write data to/from serial / parallel ports. This worked great up until 2k and XP, where they removed a .dll from the OS that was required for VB to Read and write to the IO ports. Check this thread: http://www.daniweb.com/techtalkforums/thread52505.html

Hi Comatose
Thank you for your interest
I`d like to tell you that I do use XP home sp2
I can talk to my comport/usb no problem but i can find around in c++
i


I do use XP home sp2

That's the problem.... from what I can tell, the only solution to the problem is to download the .dll (http://www.lvr.com/parport.htm#Programming) and try to use it. You USED to be able to use vbin and vbout of the .dll that came with 9x.... which carried on until 2k. Since now that .dll NO LONGER EXISTS, we have to try use the one at lvr.com. I haven't used it, but it seems to be well documented.

Hi ..

No my problem is that i dont know how to use the info from AVRInSystemProg.cpp
because i dont konw C++ I only have used visual basic 6 basic
cant convert info from c++ to vb

/kim

Ok, Let me explain the best I can....

In the file you attached, you see this line #include <iomanip> means that this C++ program wants to use functions, variables, and other programming "things" from the iomanip file (probably .h). Vb has no real way of doing this. Now, beyond that, the information in that file (iomanip) is what is needed to read from, and write to the serial port. Search the .cpp file for "sendByte", and you'll see that it is never defined in the attached file. sendByte is a function (method) that is probably defined in a class in iomanip. Even if you had access to iomanip, you probably wouldn't be able to convert it to VB anyways, since vb doesn't allow such low-level access to hardware. Hell in C++ you can directly reference video memory, and use pointers to hardware addresses, all things of which are too low-level for VB.

VB CAN read from and write to a serial port, but it requires the use of the API. This was true until win2k and XP. There was a file (win95IO.dll, I believe) that had functions for doing just that. Since the release of the later windows versions, we have yet to find a suitable replacement for that .dll. There is a free dll available, that will allow you to read and write a serial port, but people with service pack 2 have been having troubles making it work correctly. So, if you want to make a program that does the same thing as the C++ program attached, you'll need to make that new .dll work correctly with VB6, and then write code to make the VB app do the same thing as the C++ app. If you want a direct port of the C++ app to VB, you can't do it. Vb doesn't allow you to access hardware at that level.

hi ..

Have found a dll i can use for this program using avr read/write almel

tnx for all help Comatose
/kim

how to create the circuit with serial port R232 DB-9 interface to test program using visual C++. the program will indicate the LED at every bits was sent by program but i don't know to design the circuit, anybody please help me.

Hey, I'm not an electrician. You're wanting a VB6 forum to tell you how to do electronics?
Are you serious?