Midi-Control - The Unofficial Access Virus & Virus TI Forum

Fedo · #1 21.09.2004, 01:16 PM

Hi everybody,
I would like to write a program that I could use to control my Virus with a micro-controller (or at least with a PC) . Now the problem is I don't know how the midi-communication works or where I could find something about it.
Can anybody help me, plz?
Fedo

Hollowcell · #2 21.09.2004, 02:22 PM

You might be able to get some information here http://www.harmony-central.com/MIDI/Doc/doc.html

Welcome to the forum by the way.

AjmaGard · #3 21.09.2004, 03:49 PM

This could also come in handy

http://www.waf80.de/virus/controller.html

Fedo · #4 22.09.2004, 07:06 AM

Thank u guys, that's what I can start with. I'll put a documentation of my controller as soon as I've finished with it.

Juho L · #5 22.09.2004, 07:28 AM

A micro controller? We are talking about small CPU chips here?

Fedo · #6 22.09.2004, 07:45 AM

Yes, we do. Once I've learned something about the midi-communication, it is no problem for me to realize the programs I write on a PC or a micro controller.
Because of using my virus live on stage I'd like to build a small control-station for it - so I could swich between the sounds faster and do other stuff that I can do with sound-diver.

Juho L · #7 22.09.2004, 09:07 AM

That's nice. I've coded a MIDI knob box with Atmel AVR chip. I found one page with comprehensive MIDI info but unfortunately I can't find it again. But basicly MIDI is just asynchronous 31.25 kbaud UART line with one stop bit. Just get your hands on a MIDI data chart and off you go.

Reyman · #8 22.09.2004, 05:09 PM

Hello!

What programming language do you use?

C++, ASM

?

Juho L · #9 22.09.2004, 05:16 PM

I think ASM is a very good choice in a simple MIDI application. Fairly short code and the code is compact. But making a LCD UI is pretty akward with ASM. An extensive UI is pretty tricky even with C. Last year summer I worked in Elektrobit as a trainee and made a multipoint temperature measurement system with Zilog Z8 Encore! chip. I programmed the whole thing in C and the UI alone had way over 500 lines of code. I shudder even to think what it would been with ASM.

jasedee · #10 23.09.2004, 03:46 AM

Quote:

Originally Posted by Juho L

I think ASM is a very good choice in a simple MIDI application. Fairly short code and the code is compact. But making a LCD UI is pretty akward with ASM. An extensive UI is pretty tricky even with C. Last year summer I worked in Elektrobit as a trainee and made a multipoint temperature measurement system with Zilog Z8 Encore! chip. I programmed the whole thing in C and the UI alone had way over 500 lines of code. I shudder even to think what it would been with ASM.

Guys....this is an english forum. please stop talking in Finnish or whatever