Re: A very Hacky Holidays

[R Tyler Croy <tyler@linux.com>]

On 2010-12-17, Warren <ve3wwg@gmail.com> wrote:
> R Tyler Croy expounded in
> news:slrnigl66m.b8b.tyler@kiwi.local: 
>
>> For me Ada is relegated to being used in my free time, a
>> lot of which I will be having to hack on things over the
>> upcoming vacation. 
>> 
>> I wanted to ask you all what you may/may not be hacking on
>> over the break, perhaps we could cheer each other on ;)
>> 
>> A little positive reenforcement from your peers can never
>> hurt :) 
>
> I've been working on an analog synthesizer. My MIDI module 
> uses an ATmega168 using code written in Ada (thanks to Rolf's 
> AVR-Ada project). My MIDI module seems to be exhibiting key 
> rollover problems, which won't be hard to fix. I just need to 
> add a nested "Note On" counter, so that I don't prematurely 
> execute a physical "Note Off".
>
> The code is written in two tasks (actually threads under AVR-
> Ada). The main task processes MIDI events and queues some 
> events for the 2nd task. The 2nd task takes care of waking up 
> at the right time (via timeouts) and performing ADSR voltage 
> changes (DAC # 2) and creation of trigger and gate signals 
> (digital outputs). Pitch is also established by sending a 
> value to the first DAC, using an SPI interface.
>
> My original code was all C-ish Arduino stuff, which I was not 
> very happy with. When I discovered AVR-Ada, I jumped at the 
> opportunity and rewrote it all in Ada. It is so much nicer to 
> work with and Ada actually pointed out a couple of previously 
> hidden bugs (in the C code).
>
> My latest adventures with the recently built VCA synth module, 
> can be found below (there is at least one picture of the MIDI 
> module in there somewhere):
>
> http://experimentalistsanonymous.com/board/index.php?topic=
> 2445.0
>
> ( http://tinyurl.com/2d2p9vh )
>
> I don't think you need to be a member to view the forum.
>
> Merry Christmas and Hacky New Year!

Wow, sweet project! I was wondering when an AVR-Ada user was going to pipe up
with a neat project.


Does Ada have a theme song you'll be able to pipe through the device?

-- 
- R. Tyler Croy
--------------------------------------
    Code: http://github.com/rtyler
 Chatter: http://twitter.com/agentdero
          http://identi.ca/dero