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Rate-limit exp pedal: step ±1/update, stationary jitter ignored

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ash
2026-07-04 05:15:09 +00:00
parent 17def39f93
commit 1dec81e329
1 changed files with 9 additions and 4 deletions
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src/expression_pedal.cpp
+9 -4
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@@ -40,10 +40,15 @@ void ExpressionPedal::update(UsbMidiTransport& midi) {
uint8_t new_value = adc_to_midi(smoothed_raw); uint8_t new_value = adc_to_midi(smoothed_raw);
current_value = new_value; current_value = new_value;
if (current_value != last_sent_value) { // Rate-limited send: step ±1 per update when value deviates >1 from last sent.
last_sent_value = current_value; // This prevents stationary jitter (adjacent-value dither) while keeping
midi.send_cc(midi_channel, midi_cc, current_value); // movement smooth (values increment one at a time, faster than any foot).
Serial.printf("[EXP] CC%d: %d (raw ADC: %d)\n", midi_cc, current_value, current_raw); if (current_value > last_sent_value + 1) {
last_sent_value++;
midi.send_cc(midi_channel, midi_cc, last_sent_value);
} else if (current_value < last_sent_value - 1) {
last_sent_value--;
midi.send_cc(midi_channel, midi_cc, last_sent_value);
} }
} }