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diyelectromusic / picodexed

Port of Synth_Dexed to the Raspberry Pi PIco
MIT License
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Trying to build binary for Pimoroni Pico VGA Demo Base #2

Closed mwedmark closed 1 month ago

mwedmark commented 1 month ago

I've managed to build binary in Windows (after many changes done to many things) for this board Board

I didn't manage to autochange files using diff files (should have been a multi file patch maybe??) so I did the changes manually. I hope I got it right..

I can see that the board receives USB-MIDI (LED blinking) via USB-cable from Windows DAW called LMMS. But no sound on I2S?? Should the current code work with that I2S?

I've changed the pin output to suit the new board?? I think... -snip- //#define I2S_DATA_PIN 9 //#define I2S_BCLK_PIN 10 //#define I2S_LRCLK_PIN 11 // Implied by BCLK=10

define I2S_DATA_PIN 31

define I2S_BCLK_PIN 32

define I2S_LRCLK_PIN 34 // Implied by BCLK=10

-snip-

Any ideas? Maybe some knowledgeable could present working binaries for this sister board too?

diyelectromusic commented 1 month ago

The fact that the 5100, 5101, 5102 all share the same datasheet and pinout seems to imply they should be drop-in compatible, but I've only got 5102 modules to try here I'm afraid.

I seem to recall that the reason the LRCLK_PIN was implied from BCLK is because the Pico's PIO implementation of I2S needed them on consecutive GPIO pins so I don't quite know what's going on there...

Actually, looking at the pinout diagram, they've labelled physical pins, but not GPIO numbers!? So I think you'd need to use:

define I2S_DATA_PIN 26 // GPIO 26 on pin 31

define I2S_BCLK_PIN 27 // GPIO 27 on pin 32

define I2S_LRCLK_PIN 28 // Implied by BCLK=27; GPIO 28 on pin 34

But I haven't looked at this code for a while now, so anything could be happening really :)

Kevin

mwedmark commented 1 month ago

Good grief, thank you! That was the missing link after changing a lot of other things to get it to compile! Super, thanks! next step is to play some MIDI-files AND connect it to my MIDI-synth and play some! Does the code include working reverb effect or was it removed? How is it added to sound?