Midi-Clock - In, Slave)

[ErichHeinemann]

Hi, i already modified the code a bit to get a sync to the internal MIDI in Volca-Beats. I am not the "master" of github, I will create a side-project to share the code with You. My Acidbox already sync to TD3 but still 3 x 303 != 909.

[ErichHeinemann]

I changed this in AcidBanger to get a "slave" ...
I´ll try to get a version which works autonomous or as a slave, depending on receiving clock and pressed buttons..
We do not need an internal MIDI-Tick if an eexternal clock it ticking.
I added a new general boolean:
ext_midi_clock_master

void run_tick() {
  /* Run button scan at 250 Hz */
  now = millis();
  button_divider++;
  if (button_divider >= 4) {
    for (int i = 0; i < ButLast; i++) {
      read_button( &buttons[i] );
    }
    run_ui();
    button_divider = 0;
  }

  /* If MIDI is playing, then check for tick */
  if ( ext_midi_clock_master==false && midi_playing && (now - last_midi_tick) >= midi_tick_ms   ) {
    do_midi_tick();
    last_midi_tick += midi_tick_ms;
    if (last_midi_tick < now) {
      /* we are at least one tick late, give up */
      last_midi_tick = now;
    }
  }
}

In the part for the UI inside run_ui:

  // Handle play
  if (just_pressed(ButPlay)) {
    if (midi_playing) {
#ifdef DEBUG_JUKEBOX
      DEBUG("stopping midi");
#endif
      do_midi_stop();
    } else {
#ifdef DEBUG_JUKEBOX
      DEBF("starting midi clock, dt=%lu", midi_tick_ms);
#endif
      last_midi_tick = now;
      do_midi_start();
      ext_midi_clock_master = false;
      do_midi_tick();
    }
  }

... in thee MIDI-Handler

uint8_t volca_midi_devider = 0;

inline void handleSongPosition( uint pos ){
  #ifdef DEBUG_MIDI
    DEBUG("MIDI SongPosition ");
    DEBUG( pos );
  #endif
}
inline void handleClock( ){
  #ifdef DEBUG_MIDI
  //  DEBUG("MIDI Clock ");
  #endif
  if( midi_playing ){
    if( volca_midi_devider==0 ){
      set_midi_tick_ms( now - last_midi_tick );
      now = millis();
      last_midi_tick = now;
      do_midi_tick();
    }
    volca_midi_devider ++;
    if( volca_midi_devider >5 ){
      volca_midi_devider=0;
    }
  }
}

inline void handleStart( ){
  #ifdef DEBUG_MIDI
    DEBUG("MIDI Start ");
  #endif
  midi_step = -1;
  volca_midi_devider=0;
  init_midi(); // Acidbanger
}
  
inline void handleContinue( ){
  #ifdef DEBUG_MIDI
    DEBUG("MIDI Continue ");
  #endif
}
inline void handleStop(){ 
  #ifdef DEBUG_MIDI
    DEBUG("MIDI Stop ");
  #endif
  do_midi_stop();
}

[copych]

Thanks again, @ErichHeinemann , the project lacks enthusiastic people like you!!! I'll incorporate this code soon!

[01GOD]

Hi, i already modified the code a bit to get a sync to the internal MIDI in Volca-Beats. I am not the "master" of github, I will create a side-project to share the code with You. My Acidbox already sync to TD3 but still 3 x 303 != 909.

Thanks! By the way, 808 actually is a better fit. I've used those 3 roland products together. The 909 bass drum with overdrive is fun though.