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.
- 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
- LED 1 green = CC received
- LED 2 color shows CC value range:
- Red (0-31) = recording?
- Amber (32-63) = queued?
- Green (64-95) = playing?
- Blue (96-127) = other?
- Helps map Loopy Pro Generic mode values to Launchpad palette
- Set USB VID/PID via ESP32 core build flags (may work better than TinyUSB API)
- Heartbeat on LED 9 (amber pulse every 2s) confirms device is alive
- SysEx flashes ALL LEDs white for 200ms
- Regular MIDI flashes LED 0 white for 50ms
- Fixed note matching bug: removed channel check so notes 36-45 match
across channels 1-3 (Launchpad static/flashing/pulsing)
- Simplified LED lookup to match by note only (channel stored for mode)
- Replaced sparse palette with proper RGB gradients between key
breakpoints (Red, Orange, Yellow, Green, Cyan, Blue, Purple, Off)
ash