ash/loopy_midi_controller
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88fee54f96f68282e1784168c81a087a6d914560
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Author SHA1 Message Date
ash 88fee54f96 Remove beat 1 differentiation - all beats flash white 50ms 2026-07-03 08:36:14 +00:00
ash 868c5eda82 Auto-detect time signature from SPP deltas (bar boundaries) 2026-07-03 08:32:03 +00:00
ash d7f9bb16fd Fix beats_per_bar linkage (remove static) 2026-07-03 08:26:48 +00:00
ash b3f4eb1a8b Add SPP (Song Position Pointer) detection - uses SPP on START to set correct tick position. Add beats_per_bar (default 4) with button combo: hold 10 + press 1=4/4, 2=3/4, 3=6/4 2026-07-03 08:22:47 +00:00
ash 3226986709 Capture tick 0 (last_beat=UINT32_MAX) so downbeat is not skipped 2026-07-03 08:13:08 +00:00
ash e1507d5d7c Beat 1 = % 4 == 1 (last untested offset) 2026-07-03 08:09:35 +00:00
ash 3c5e0b07ae Try % 4 == 2 for beat 1; latency 55ms 2026-07-03 08:07:24 +00:00
ash 9d1a2fdc87 Shift beat-1 detection to % 4 == 3 (was off by 3 beats); latency 60ms 2026-07-03 08:04:40 +00:00
ash 7c93839f94 Bump flash latency to 50ms 2026-07-03 08:00:03 +00:00
ash 907279e1ea Make flash latency tunable at runtime via 'latency N' serial command 2026-07-03 07:57:31 +00:00
ash df1f678845 Add 20ms flash latency to compensate for audio buffer (flash was ahead of beat) 2026-07-03 07:53:04 +00:00
ash b859527169 Beat 1 = RED (100ms), other beats = WHITE (50ms) 2026-07-03 07:50:16 +00:00
ash ad977d3b09 Beat 1 = yellow, other beats = white — visible color contrast 2026-07-03 07:46:26 +00:00
ash acd3cc51fe Beat 1 (every 4th) = full white 50ms snap, others = barely visible 6,6,6 — sharp contrast for phase detection 2026-07-03 07:43:26 +00:00
ash eb5d66d29b Clean baseline: skip tick-0 flash, first flash at tick 24 (first beat boundary) 2026-07-03 07:40:53 +00:00
ash 354f18efe7 Beat 0 (first beat after START) full white, subsequent beats dimmer — marks bar downbeat 2026-07-03 07:27:06 +00:00
ash eda2a959dc Remove time signature assumption — all beats equal brightness 2026-07-03 07:25:58 +00:00
ash 53752365b8 Debug: beat 1 (downbeat) full white, other beats dimmer (64) — visually identify phase 2026-07-03 07:25:21 +00:00
ash ea45c927e7 Fix clock latency: process one USB packet per update() — no more batch-processing 0xF8 bursts 2026-07-03 07:19:05 +00:00
ash 72496d2daf Fix MIDI clock phase: handle 0xFA START to reset tick counter to downbeat 2026-07-03 07:13:38 +00:00
ash 1a70cbe870 Fix duplicate/stray code in midi_task function 2026-07-03 07:05:56 +00:00
ash ec0cdc9438 Fix midi_tick_count declaration and 0xF8 detection: add proper extern + transport clock parsing 2026-07-03 07:04:40 +00:00
ash 9d2872a513 Fix pixel 6 beat timing: align with actual MIDI beats using tick-based counting (24 ticks per beat) 2026-07-03 07:00:02 +00:00
ash c83a500b3c Fix pixel 6 beat timing: align flashes with real-time beats, not just MIDI ticks 2026-07-03 06:55:50 +00:00
ash a483eebd84 Add comprehensive README documenting project architecture, features, configuration, and customization 2026-07-03 03:57:17 +00:00
ash 06479f0ca2 Fix orange 0xFFAA00->0xFF6600, pads 8-9 white->purple 2026-07-02 07:04:22 +00:00
ash 66058a6722 Set per-pad LED colors with dim off state 
- Pad 0-1: Blue, 2-4: Orange, 5: Red, 6: White, 7: Amber, 8-9: White
- Off state (velocity=0): dim at ~8% brightness instead of black
- On state: full brightness of assigned color
- clear_all() sets dim colors instead of off
 2026-07-02 06:45:42 +00:00
ash 4ddb9a00bf Reduce cal_max 1220->1180 to absorb ADC jitter at toe 
Raw ADC jitter of ~40 counts at toe caused MIDI flickering
between 127 and ~123. Lowering cal_max so the >= cal_max
clamp at 127 absorbs the noise.
 2026-07-02 06:40:30 +00:00
ash c44bfb033b Fix button-to-MIDI latency: remove blocking serial, reduce debounce, faster loop 
Latency sources fixed:
- debounce 50ms -> 5ms (switch_stub.cpp:15)
- Removed [MIDI OUT] Serial.printf from send_cc() (midi_transport.cpp:93-98)
- Removed [APP] Switch pressed/released prints from update() (app_task.cpp:39,43)
- Removed [APP] Switch -> CC print from process_switch_event() (app_task.cpp:140-143)
- loop() delay 10ms -> 1ms (main.cpp:390)

Serial output at 115200 baud was taking 2-5ms per printf call
in the critical button-to-MIDI path, adding 7-15ms+ total latency
per button press. All removed from hot path.
 2026-07-02 06:22:23 +00:00
ash 0d22769cf6 Tweak cal_max: 1239 -> 1220 2026-07-02 04:24:29 +00:00
ash 9197294365 Increase pedal read rate: 20ms -> 5ms 2026-07-02 04:21:53 +00:00
ash 2cf49b8deb Calibrate expression pedal: cal_min=36, cal_max=1239 
Raw ADC observed range: heel=36, toe=1239.
Maps full pedal travel to MIDI 0-127.
 2026-07-02 04:19:30 +00:00
ash f6c0a01a14 Fix expression pedal pin: 5 -> 4 
Constructor was still GPIO5 despite physical move to GPIO4.
The pedal was reading the wrong (unconnected) pin, so no ADC changes.
 2026-07-02 04:17:30 +00:00
ash f0b6df1477 Remove serial cal commands, just log raw ADC on each value change 
- Print raw ADC + mapped MIDI value on every change
- Remove cal min/cal max serial commands (broken with multi-word)
- Keep cal_min=0, cal_max=4095 defaults
- User moves pedal full range and reports min/max raw values
 2026-07-02 04:14:39 +00:00
ash 8bde8efaff Add expression pedal calibration: cal min/cal max 
- Remove fixed 0-4095 mapping, use cal_min/cal_max instead
- Auto-calibrate minimum at boot (assumes pedal at heel)
- 'cal min' sets current position as heel (0)
- 'cal max' sets current position as toe (127)
- Map cal_min->0, cal_max->127 with clamping
- Update 'exp' command to show raw ADC + cal values
 2026-07-02 04:09:22 +00:00
ash 08d6fc8701 Add expression pedal support on GPIO5 (CC 4) 2026-07-02 04:00:06 +00:00
ash ae2891fca8 Fix palette: entries 121-127 now visible (was black). Remove local flash. 2026-06-30 05:05:06 +00:00
ash d59e36a9a5 Add direct local LED feedback on button press 2026-06-30 04:58:22 +00:00
ash 063fa2065d Send visible palette index 21 (yellow) instead of 127 (black) so feedback is visible 2026-06-30 04:49:30 +00:00
ash 62b0604508 Map buttons to custom CC values with reverse-map feedback 2026-06-30 04:43:42 +00:00
ash 3389cc9403 Send CC instead of NOTE_ON for Loopy Pro generic mirror. Clean up flash_activity. 2026-06-30 04:38:28 +00:00
ash 1728413cb8 Fix NOTE_ON feedback: pass led_index to set_led_state 2026-06-30 04:17:18 +00:00
ash c57847db78 Remove flash_activity that was stealing focus to LED 0 2026-06-30 04:14:07 +00:00
ash a4131adf2a Fix CC feedback: route to correct pixel by LED index 2026-06-30 04:04:43 +00:00
Ashley Strahle 3dc9e445be . 2026-06-30 13:54:41 +10:00
ash 1c1fc4d372 Remove heartbeat, relabel USB to JOC Midi 2026-06-30 03:46:31 +00:00
ash ac83ba269f USB name: JOC / JOC Midi (VID/PID still Launchpad X for Loopy Pro recognition) 2026-06-26 00:13:41 +00:00
ash 17c630f850 Fix update(): remove old sysex_flash_active logic 2026-06-26 00:07:50 +00:00
ash 268b793d87 Fix compilation: remove unused flash_sysex/flash_all/flash_one methods and member vars 2026-06-25 23:54:30 +00:00
ash a281eaa46e Clean up LED driver + rename USB to JOC Midi 
- Removed flash_sysex/flash_all/flash_one (conflicted with heartbeat)
- Simplified flash_activity: LED 0 white 50ms, restores properly
- Heartbeat only on LED 9 when no activity
- USB renamed: Manufacturer=JOC, Product=JOC Midi
 2026-06-25 23:47:39 +00:00