First test for sequencer-sync towards the audio interrupt.

MicroDexed.ino

@@ -36,6 +36,7 @@
 #include "effect_modulated_delay.h"
 #include "effect_stereo_mono.h"
 #include "effect_mono_stereo.h"
+#include "sequencer_timer.h"
 #ifdef USE_PLATEREVERB
 #include "effect_platervbstereo.h"
 #else
@@ -251,6 +252,9 @@ AudioConnection          patchCord22(drum_mixer_l, 0, master_mixer_l, 2);
 #endif
 #endif
 
+AudioSequencerTimer      sequencer_timer;
+AudioConnection          patchCord25(reverb_mixer_r, sequencer_timer);
+
 //
 // Dynamic patching of MicroDexed objects
 //
@@ -400,6 +404,29 @@ extern LCDMenuLib2 LCDML;
 
 extern void getNoteName(char* noteName, uint8_t noteNumber);
 
+void testfunc(void)
+{
+  static int8_t takt;
+
+  switch (takt % 4)
+  {
+    case 0:
+      Serial.println("EINS!");
+      break;
+    case 1:
+      Serial.println("ZWEI!");
+      break;
+    case 2:
+      Serial.println("DREI!");
+      break;
+    case 3:
+      Serial.println("VIER!");
+      takt = -1;
+      break;
+  }
+  takt++;
+}
+
 /***********************************************************************
    SETUP
  ***********************************************************************/
@@ -665,6 +692,9 @@ void setup()
   audio_thru_mixer_l.gain(3, 0.0);
 #endif
 
+  sequencer_timer.set_bpm(60);
+  sequencer_timer.step_function(&testfunc);
+
 #ifdef DEBUG
   Serial.println(F("<setup end>"));
 #endif

sequencer.cpp

@@ -12,6 +12,9 @@ extern void handleNoteOff(byte , byte , byte );
 extern void UI_func_sequencer(uint8_t);
 extern const char* seq_find_shortname(uint8_t);
 
+
+
+
 void sequencer(void)
 {
 

sequencer_timer.cpp

@@ -0,0 +1,39 @@
+#include <Audio.h>
+#include "config.h"
+#include "sequencer_timer.h"
+
+void AudioSequencerTimer::update(void)
+{
+  audio_block_t *in;
+
+  in = receiveReadOnly(0);
+  if (in)
+    release(in);
+
+  tick++;
+
+  if (tick >= float(beat)*float(bpm) + 0.5)
+  {
+    if (sequencer_step_function != NULL)
+      (*sequencer_step_function)();
+    tick = 0;
+  }
+}
+
+uint32_t AudioSequencerTimer::get_tick(void)
+{
+  return (tick);
+}
+
+void AudioSequencerTimer::set_bpm(uint8_t b)
+{
+  bpm = b;
+}
+
+void AudioSequencerTimer::step_function(void(*func)())
+{
+  if (func != NULL)
+    sequencer_step_function = func;
+  else
+    sequencer_step_function = NULL;
+}

sequencer_timer.h

@@ -0,0 +1,27 @@
+#ifndef _SEQUENCER_TIMER_H_
+#define _SEQUENCER_TIMER_H_
+
+class AudioSequencerTimer : public AudioStream
+{
+  public:
+    AudioSequencerTimer(void):
+      AudioStream(1, inputQueueArray)
+    {
+      tick = 0;
+      bpm = 60;
+      sequencer_step_function = NULL;
+    }
+
+    virtual uint32_t get_tick(void);
+    virtual void set_bpm(uint8_t b);
+    virtual void step_function(void(*func)());
+    virtual void update(void);
+
+  private:
+    audio_block_t *inputQueueArray[1];
+    uint8_t bpm;
+    void (*sequencer_step_function)();
+    volatile uint32_t tick;
+    const float beat = AUDIO_SAMPLE_RATE_EXACT / float(AUDIO_BLOCK_SAMPLES) / 60.0;
+};
+#endif