ash/loopy_midi_controller
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Fix pixel 6 beat timing: align with actual MIDI beats using tick-based counting (24 ticks per beat)

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ash
2026-07-03 07:00:02 +00:00
parent c83a500b3c
commit 9d2872a513
1 changed files with 33 additions and 14 deletions
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src/main.cpp
+33 -14
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@@ -26,10 +26,8 @@ TaskHandle_t midi_task_handle = NULL;
void midi_task(void* parameter) {
Serial.println("[TASK] MIDI task started on core 0");
// Beat timing fixes for precise beat alignment
const uint32_t BEAT_MS = 500; // 120 BPM target (500ms per beat)
uint32_t last_beat_time = 0;
uint32_t current_real_beat = 0;
// Beat timing fixes for precise beat alignment - sync to real MIDI time, not hardcoded tempo
uint32_t last_beat = 0;
uint32_t flash_start = 0;
while (true) {
@@ -39,19 +37,15 @@ void midi_task(void* parameter) {
uint32_t tick = midi_tick_count;
uint32_t now = millis();
// Precise beat detection: calculate which real-time beat we're on
uint32_t real_beat = now / BEAT_MS;
// Calculate beat using MIDI tick count (24 ticks per beat/PPQN)
uint32_t current_beat = tick / 24;
// Check if we've crossed a real-time beat boundary
if (real_beat != current_real_beat) {
// Track the current real-time beat
current_real_beat = real_beat;
last_beat_time = now;
// Flash pixel 6 on the precise real-time beat
// Check if we've crossed a beat boundary
if (current_beat != last_beat) {
last_beat = current_beat;
flash_start = now;
mux.set_led_color(6, 255, 255, 255);
mux.show();
flash_start = now;
}
// Handle flash animation
@@ -72,6 +66,31 @@ void midi_task(void* parameter) {
vTaskDelay(1);
}
}
}
// Handle flash animation
if (flash_start > 0) {
uint32_t elapsed = now - flash_start;
if (elapsed >= 80) {
mux.set_led_color(6, 20, 20, 20);
mux.show();
flash_start = 0;
} else {
float b = 1.0f - (float)elapsed / 80.0f;
uint8_t v = (uint8_t)(255 * b * b);
mux.set_led_color(6, v, v, v);
mux.show();
}
}
// Update last_clock_time at the end of MIDI update
// (checks happen during midi_transport.update())
vTaskDelay(1);
}
}
void sync_main.cpp():miditempfix() {
void handle_serial_command(const String& cmd) {
if (cmd == "dump" || cmd == "d") {