Hi,

Thank you very much for your feedback.

I programmed the DSP in assembly language.

But, first, I wrote it with a high level simulation environments. I used Matlab.

Matlab is very adapted for the development part.

Then I translated the code into assembly.

This way of developing take more times but split the problems. In the Matlab part I tuned the DSP code to obtain the right sound.

And in the assembly part, I only had to solve assembly problems like writting in the external memory,...

I cannot evaluate clearly the development time. I received my kit for Christmas. But I only spent a few hours by weeks on it.

I'm a phd student in electronic. This background helps me for the development of the effect.

Have a nice day.

Hi,

I didn't use Simulink because it's too different from the final code.

I develloped a code that works like the DSP. The advantage is that you can use all the features of Matlab (loading and writing wav file,...) to tune exactly the sound I wanted.

Then, I just converted all the code into assembly.

The most representative example is that i had to calculate the frequency of each note. In matlab, this take one line. In assembly i head to implement a look-up table which reprensents an important task.

I already shared things, I posted on the old forum how i use the external memory. And how i convert easily my code into a step by step debug code.

I think that the full code is hard to understand because due to storage capacity  of the program memory, I had to optimize it a lot.

I hope this will help you.