metronome/rust/pm-daisy/Cargo.toml
Me Here d80c35984e pm-daisy: Daisy Pod spike — play the click engine on STM32H7 (host-verified, awaiting hardware)
Develop the full Daisy Pod spike so it can be flashed the moment the board
arrives. Architecture: one shared engine, two front-ends.

- pm-synth: make it `#![no_std]` (mirroring track-format), routing float math
  through `libm` so the SAME f32 code runs on the host and on the Daisy's
  Cortex-M7F (hardware FPU — no fixed-point port needed). Add `Player`, a
  self-running sequencer that owns the Synth + scheduled clicks and renders
  sample-by-sample, looping at the pattern boundary. Integer-only hot path
  (clicks pre-resolved to sample indices); exposes a `fired()` beat counter.
  Add SPIKE_PROGRAM/SPIKE_BARS as the shared source of truth.

- synthrender: render the SAME Player to pm-daisy-preview.wav — the host-side
  "simulator". Bit-identical preview of the hardware output (before its codec);
  far more useful than chip emulation (Renode can't model the audio codec).

- pm-daisy (new, workspace-excluded firmware): thin BSP binary for the Daisy
  Seed/Pod. embedded-alloc heap + board bring-up + SAI-DMA audio interrupt
  feeding Player::next_sample() into stereo frames, USER LED flashing per click.
  Audio loop follows the `daisy` crate's examples/audio.rs. Board revision
  (codec) is a Cargo feature; README documents matching it + both flash paths
  (probe-rs/RTT and USB DFU) + the QSPI-bootloader fallback.

Verified without hardware: host build + preview render (48 kHz, onsets on the
8th-note grid at 124 BPM); firmware cross-compiles + links for thumbv7em-none-
eabihf at ~87 KB (fits the 128 KB internal flash) across all three codec
revisions; track-format conformance + `node tests/run.mjs` (47 pass) still green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-05 11:41:10 -05:00

34 lines
1.7 KiB
TOML

[package]
name = "pm-daisy"
version = "0.1.0"
edition = "2021"
description = "PM Daisy-Pod spike: plays the PolyMeter click engine (pm-synth Player) out the Daisy Pod's audio jack, flashing the Seed LED on each click. STM32H750 / Cortex-M7F. See docs/daisy-spike.md."
[dependencies]
cortex-m = "0.7"
cortex-m-rt = "0.7"
stm32h7xx-hal = { version = "0.16", features = ["stm32h750v", "rt", "revision_v"] }
# Daisy Seed board-support. The board REVISION is a feature (below) — it selects the right audio
# codec driver (AK4556 / WM8731 / PCM3060). Picking the wrong one = silence. See README.
daisy = { version = "0.10", default-features = false, features = ["defmt"] }
embedded-alloc = "0.6" # pm-synth's Player parses into Vec/String + allocates voices → needs a heap
defmt = "0.3"
defmt-rtt = "0.4" # logs over RTT, read by `probe-rs run` (a debug probe)
panic-probe = { version = "0.3", features = ["print-defmt"] }
pm-synth = { path = "../pm-synth" } # the click engine + the shared Player (host-verified)
track-format = { path = "../track-format" } # parse the program string into a Track
# ----- Board revision: pick ONE to match the Daisy Seed on your Pod (check the sticker / silkscreen).
# Default targets the Daisy Seed 1.1 (WM8731), the common recent revision. Override on the CLI, e.g.
# cargo build --release --no-default-features --features seed_1_2
[features]
default = ["seed_1_1"]
seed = ["daisy/seed"] # original Daisy Seed (AK4556 codec)
seed_1_1 = ["daisy/seed_1_1"] # Daisy Seed 1.1 (WM8731 codec)
seed_1_2 = ["daisy/seed_1_2"] # Daisy Seed 1.2 / Seed2 DFM (PCM3060 codec)
[profile.release]
opt-level = "s" # size — the STM32H750 has only 128 KB internal flash (see memory.x / README)
lto = true
codegen-units = 1
debug = 2