Slightly OT: Visual Basic 6.0 USB programming resources

[edhaslam]

Hi all,

I'm currently developing a USB datalogger around the 18F4550 and i'm about to start writing some software for the 'download' utility. The problem is that i've never done any USB comms in VB. Does anybody know of any good websites/books that cover this topic?

Cheers,
Ed

[newguy]

I just started reading "USB Complete" by Jan Axelson last week. I bought this book based on recommendations from people here.

I'm about halfway through it, and it's a decent book. The first 5 chapters are ugly - grossly repetitive - but everything after that has been good.

The author includes code snippets for use in Visual C++ and Visual Basic, but there is no complete program in the text. Instead, there is a note to look at the author's website: www.lvr.com

I haven't had a chance to check out the website yet, but the code should be there.

As a separate question, has anyone here bought CCS' USB development kit? How are the s/w examples for the PC that come with it? Are they easy to follow?

[edhaslam]

[newguy]

Thanks Ed. Sounds like the USB kit is the way to go, so I'll order it today.

[edhaslam]

[newguy]

Have you had a look at the USB example in the code library? I forget the author's name, but you'll know the example when you see it, as it's in Spanish. Someone asked the original poster to translate it to english, but PCM programmer posted a link to an online translator.

I've looked at the translated code, and it's pretty easy to understand. I believe he also uses a 4550, like you want.

Someone else also posted a link to a project they did with (I think) a 2550. The project was to implement a joystick or something like that? Search the forum, you'll find it. The guy posted complete pic code. I don't remember if there was PC side code or not.

[Mark]

Go read this app note from Microchip. You'll be surprised at how easy you VB code can be.