raphaelmeyer / pico-synth

Pico Synth

Getting started

To set up the toolchain install:

• cmake
• clang toolchain
• arm-none-eabi toolchain
• go-task (taskfile)

Build the binaries:

go-task build

Plug in a Raspberry Pi Pico (BOOTSEL) and copy the uf2 from the build folder to the RPi in a shell on the host. Paths may differ.

cp _build/pico/pico/<executable>/<executable>.uf2 /run/media/.../RPI-RP2/

List the available build tasks:

go-task --list

Pico Synth

The executable of the pico-synth is generated in _build/pico/pico/pico-synth/pico-synth.uf2.

Hardware

• Raspberry Pi Pico
• ada3678 (UDA1334)

Wiring

I2S (ada3678)

14 (GP 10)    ---- BCLK
15 (GP 11)    ---- WSEL
16 (GP 12)    ---- DIN

36 (3V3 OUT)  ---- VIN
38 (GND)      ---- GND

Control (SPI slave)

21 (GP 16)  MOSI
22 (GP 17)  CS
24 (GP 18)  SCK
25 (GP 19)  MISO

Midi Adapter

The executable of the midi-adapter is generated in _build/pico/pico/midi-adapter/midi-adapter.uf2.

Hardware

• Raspberry Pi Pico
• ada2088 (ST7735R)

Wiring

Control (SPI master)

16 (GP 12)  MISO
17 (GP 13)  CS
19 (GP 14)  SCK
20 (GP 15)  MOSI

Display

22 (GP 17)    ---- TCS
24 (GP 18)    ---- SCK
25 (GP 19)    ---- SI
26 (GP 20)    ---- D/C
27 (GP 21)    ---- RST

36 (3V3 OUT)  ---- VIN
38 (GND)      ---- GND