metronome/rust/pm-grid
Me Here 72dbb2ecd0 pm-grid: hardening - bound the USB-MIDI TX queue + defensive set-list guard
Audit for panic/brick risks (a panic = black screen on this device):
- sx_send (live-sync broadcasts + 5s heartbeat) pushed to tx_q with no cap. If
  the editor disconnects without a BYE while sync_armed and nothing drains
  MIDI-IN, tx_q grows unbounded -> heap exhaustion -> brick. Now drops messages
  when tx_q > 256 (the heartbeat re-syncs when the host returns). Notes/clock
  were already capped.
- build_setlists now drops empty set lists, so load()/next_track() can never
  hit a `% 0`. (parse guarantees >=1 lane; built-ins/parsed lists are non-empty,
  this is belt-and-suspenders.)

Other unwrap()s are boot-time peripheral init; lanes[0]/items[0]/step[0] are all
safe (parse substitutes beep:4 for empty programs; built-ins lead the list).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 11:21:06 -05:00
..
.cargo pm-grid: USB-MIDI audio + make Rust the shipping Grid firmware 2026-06-03 15:19:38 -05:00
src pm-grid: hardening - bound the USB-MIDI TX queue + defensive set-list guard 2026-06-04 11:21:06 -05:00
.gitignore pm-grid: name the drive PM_G-1 + read set lists from it (on-device FAT) 2026-06-04 07:29:30 -05:00
build.rs Add pm-grid: Rust firmware for the Pico Scroll Pack (RP2040) 2026-06-03 07:22:48 -05:00
build.sh pm-grid: USB-MIDI audio + make Rust the shipping Grid firmware 2026-06-03 15:19:38 -05:00
Cargo.toml pm-grid: name the drive PM_G-1 + read set lists from it (on-device FAT) 2026-06-04 07:29:30 -05:00
memory.x pm-grid: USB Mass Storage (composite MIDI + 1MB flash-backed drive) 2026-06-03 16:25:51 -05:00
uf2.py Add pm-grid: Rust firmware for the Pico Scroll Pack (RP2040) 2026-06-03 07:22:48 -05:00