[sdiy] Getting dsPICs talking

[Jason Tribbeck]

Hi,

> Indeed it is. It's a very breadboard-friendly synth chip. You've got
> a 16-bit uP and a dual-channel 16 bit DAC which runs up to 100KHz.
> You can make envelope generators, LFOs, mod sources of many
> varieties, oscillators, etc etc. Plus 6 analog channels in for CVs.

I'm doing a similar synth project, although using dsPIC30s. I saw that
particular device, but it wasn't in stock (at the time), and I decided
to make a prototype using dsPIC30F4031 instead, using the DCI interface
for DAC (which I wouldn't have bothered about for the 33FJ128GP802).

What I'm using to communicate between the PICs (there are 3 in my
prototype, but should be extendable to many more) is the I2C interface,
since it's only two wires, and you can hook into an interrupt for the
I2C events. I've also got an FRAM for the synth program information
hooked into the I2C interface as well.
-- 
Jason Tribbeck