Crate picoem_devices 

Off-chip device models for the picoem emulator workspace.

This crate holds external (board-level) devices that compose with the chip emulators (rp2040_emu, rp2350_emu) but are not part of the chips themselves. Each device is a concrete struct with its own API — no trait polymorphism.

Devices fall into two categories:

• Pin-driving (e.g. PSRAM) — participates in the per-cycle GPIO merge inside the emulator’s update_gpio(). Hosted on Bus as a typed field.
• Observer (e.g. LCD decoder, I2S capture) — reads GPIO state from outside the step loop. Called by the app or harness, not by the emulator core.

Re-exports

pub use i2s_capture::I2sCapture;

pub use lcd::LcdDecoder;

pub use lcd::LcdState;

pub use psram::Psram;

Modules

i2s_capture

I2S capture -> WAV writer.

lcd

LCD bit-bang decoder for the emulator showcase.

psram

apmemory APS6404L-3SQR-SN external SPI PSRAM model (8 MB).