Simon Gardling 11d283585c forza-trigger: drop pedal-off early-returns (root cause of "no reaction")
Live diagnostic on yarn revealed the daemon was receiving 324-byte FH5
packets correctly (5.7MB on the systemd socket; strace showed steady
recvfrom + write to /dev/hidraw7) but writing trigger mode 0x05
(no-resistance) on nearly every tick. Cause: `accel` and `brake` are
0 most of the time during normal play (off-throttle on straight
sections, off-brake when not braking). Both handlers had:

  if accel/255 <= THROTTLE_INPUT_THRESHOLD: effect.off(); return
  if brake/255 <= BRAKE_INPUT_THRESHOLD:    effect.off(); return

Every off-pedal packet set the trigger to OFF. Brief pedal-on moments
set vibration. The result: rapidly oscillating off↔vibration state,
imperceptible at 60 Hz packet rate.

These early-returns were holdovers from the previous Race-Element 1:1
port (variant A), which IS designed to be silent unless slipping.
Variant D's whole point is "always feels something" — Cosmii has no
pedal-off gate, and its baseline branch produces feedback even at
brake=0/accel=0 with strength clamped to MIN.

Fix: remove both early-returns. Foot-off-pedal flows through the
baseline branch and produces feedback(strength=MIN_*_RESISTANCE). The
user feels light constant resistance instead of silence. Trigger only
returns to physical-rest when out-of-race (run-loop's reset_triggers).

Also drop the now-dead BRAKE_INPUT_THRESHOLD / THROTTLE_INPUT_THRESHOLD
constants. Two tests renamed and updated to assert MIN-strength
baseline feedback instead of effect.off() on zero pedal.

54/54 tests pass. Build clean.
2026-05-07 14:18:47 -04:00
2026-05-04 20:33:27 -04:00
2026-05-05 12:40:11 -04:00
2026-05-05 12:40:11 -04:00
2026-05-06 10:32:58 -04:00
2026-05-04 14:46:41 -04:00
2026-05-03 00:35:48 -04:00
2026-04-22 07:28:56 -04:00
2026-05-06 18:53:36 -04:00
2026-04-25 22:24:36 -04:00
2026-04-23 20:23:37 -04:00

My NixOS configs

Hosts

  • mreow: My personal Framework 13 laptop
  • yarn: Machine I usually just play games on. Boots into SteamOS-like interface.
  • muffin: Homeserver, runs various services.

Desktop/Laptop

What do I use?

Browser: Firefox 🦊 (actually Zen Browser :p)

Text Editor: Doom Emacs

Terminal: ghostty

Shell: fish with the pure prompt

WM: niri

Background

  • Got my background from here and used the command magick input.png -filter Point -resize 2880x1920! output.png to upscale it bilinearly
Description
Unified NixOS flake for mreow, yarn, muffin
Readme 8 MiB
Languages
Nix 77.5%
Python 17.2%
Shell 3.5%
Emacs Lisp 1.8%