Added global midi_bpm and synced delay (to midi_bpm).

MicroDexed.ino

@@ -220,13 +220,12 @@ void create_audio_engine_chain(uint8_t instance_id)
 uint8_t sd_card = 0;
 Sd2Card card;
 SdVolume volume;
-uint8_t midi_ticks[10] = {0, 6, 9, 12, 18, 24, 36, 48, 72, 96};
+float midi_ticks_factor[10] = {0.0, 0.0625, 0.09375, 0.125, 0.1875, 0.25, 0.375, 0.5, 0.75 , 1.0};
 uint8_t midi_bpm_counter = 0;
-elapsedMillis midi_bpm;
+uint8_t midi_bpm = 0;
-#ifdef USE_FX
+int16_t _midi_bpm = -1;
-uint8_t midi_timing_counter[NUM_DEXED] = {0, 0};
+bool midi_clock_running = false;
-elapsedMillis midi_timing_timer[NUM_DEXED];
+elapsedMillis midi_bpm_timer;
-#endif
 elapsedMillis long_button_pressed;
 elapsedMillis control_rate;
 uint8_t active_voices[NUM_DEXED];
@@ -1374,71 +1373,75 @@ void handleTuneRequest(void)
 
 void handleClock(void)
 {
-#ifdef DEBUG
+  if (midi_clock_running != true)
+    return;
+
   if (midi_bpm_counter % 24 == 0)
   {
+    midi_bpm = (60000.0f / float(midi_bpm_timer) + 0.5);
+
+    if (_midi_bpm > -1 && _midi_bpm != midi_bpm)
+    {
+#ifdef DEBUG
       Serial.print(F("MIDI Clock: "));
-    Serial.print(60000.0f / midi_bpm, 2);
+      Serial.print(midi_bpm);
-    Serial.print(F("bpm ("));
+      Serial.print(F(" bpm ("));
-    Serial.print(midi_bpm, DEC);
+      Serial.print(midi_bpm_timer, DEC);
       Serial.println(F("ms per quarter)"));
-    midi_bpm = 0;
-    midi_bpm_counter = 0;
-  }
-  midi_bpm_counter++;
 #endif
 
 #ifdef USE_FX
-  for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)
-  {
-    if (midi_ticks[configuration.fx.delay_sync[instance_id]] > 0)
-    {
       /*
-        1   1/16  =  6 ticks
+         1   1/16  =  6 ticks / 0.0625
-        2   1/16T =  9 ticks
+         2   1/16T =  9 ticks / 0.09375
-        3   1/8   = 12 ticks
+         3   1/8   = 12 ticks / 0.125
-        4   1/8T  = 18 ticks
+         4   1/8T  = 18 ticks / 0.1875
-        5   1/4   = 24 ticks
+         5   1/4   = 24 ticks / 0.25
-        6   1/4T  = 36 ticks
+         6   1/4T  = 36 ticks / 0.375
-        7   1/2   = 48 ticks
+         7   1/2   = 48 ticks / 0.5
-        8   1/2T  = 72 ticks
+         8   1/2T  = 72 ticks / 0.75
-        9   1/1   = 96 ticks
+         9   1/1   = 96 ticks / 1.0
       */
-      if (midi_timing_counter[instance_id] % midi_ticks[configuration.fx.delay_sync[instance_id]] == 0)
+      for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)
       {
-        int32_t t = midi_timing_timer[instance_id];
+        if (configuration.fx.delay_sync[instance_id] > 0)
-        delay_fx[instance_id]->delay(0, constrain(t*10, DELAY_TIME_MIN*10, DELAY_TIME_MAX*10));
+        {
+          uint16_t t = uint16_t(60.0 / float(midi_bpm) * 1000.0 * midi_ticks_factor[configuration.fx.delay_sync[instance_id]] + 0.5);
+          delay_fx[instance_id]->delay(0, constrain(t, DELAY_TIME_MIN * 10, DELAY_TIME_MAX * 10));
 #ifdef DEBUG
-        Serial.print(F("Delay-Sync to "));
+          Serial.print(F("Setting Delay-Sync to "));
-        Serial.print(constrain(t, DELAY_TIME_MIN, DELAY_TIME_MAX), DEC);
+          Serial.print(constrain(t, DELAY_TIME_MIN * 10, DELAY_TIME_MAX * 10), DEC);
-        Serial.print(F(" ms / "));
+          Serial.println(F(" ms"));
-        Serial.print(midi_timing_counter[instance_id], DEC);
-        Serial.println(F(" ticks"));
 #endif
-        midi_timing_counter[instance_id] = 0;
-        midi_timing_timer[instance_id] = 0;
-      }
-      midi_timing_counter[instance_id]++;
         }
       }
-#else
-  ;
 #endif
+    }
+
+    _midi_bpm = midi_bpm;
+    midi_bpm_counter = 0;
+    midi_bpm_timer = 0;
+  }
+
+  midi_bpm_counter++;
 }
 
 void handleStart(void)
 {
-  ;
+  midi_clock_running = true;
+  midi_bpm_timer = 0;
+  midi_bpm_counter = 0;
+  _midi_bpm = -1;
 }
 
 void handleContinue(void)
 {
-  ;
+  midi_clock_running = true;
 }
 
 void handleStop(void)
 {
-  ;
+  midi_clock_running = false;
 }
 
 void handleActiveSensing(void)

config.h

@@ -32,7 +32,7 @@
 
 // ATTENTION! For better latency you have to redefine AUDIO_BLOCK_SAMPLES from
 // 128 to 64 in <ARDUINO-IDE-DIR>/cores/teensy3/AudioStream.h
-// For this audio buffers (AUDIO_MEM) are doubled!
+// For this you have manually change audio buffers (AUDIO_MEM) to the doubled value!
 
 // If you want to test the system with Linux and without any keyboard and/or audio equipment, you can do the following:
 // 1. In Arduino-IDE enable "Tools->USB-Type->Serial + MIDI + Audio"
@@ -59,7 +59,7 @@
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy/hardware/teensy/avr/cores/teensy4/usb_midi.h
 //#define USB_MIDI_SYSEX_MAX 4104
 
-#define VERSION "1.0.18"
+#define VERSION "1.0.19"
 
 //*************************************************************************************************
 //* DEVICE SETTINGS
@@ -131,8 +131,7 @@
 //#if AUDIO_BLOCK_SAMPLES == 64
 //#define AUDIO_MEM 256
 //#else
-#define AUDIO_MEM 128
+#define AUDIO_MEM 750
-#define AUDIO_MEM_F32 10
 //#endif
 
 #ifdef TEENSY_AUDIO_BOARD
@@ -164,17 +163,20 @@
 #if defined(TEENSY3_6)
 #define DELAY_MAX_TIME 250
 #elif defined(TEENSY4)
-#define DELAY_MAX_TIME 750
+#define DELAY_MAX_TIME 500
 #else
 #define DELAY_MAX_TIME 125
 #endif
 #else
 #if defined(TEENSY3_6)
 #define DELAY_MAX_TIME 500
+#define AUDIO_MEM 360
 #elif defined(TEENSY4)
-#define DELAY_MAX_TIME 1500
+#define DELAY_MAX_TIME 1000
+#define AUDIO_MEM 750
 #else
 #define DELAY_MAX_TIME 250
+#define AUDIO_MEM 200
 #endif
 #endif
 
@@ -420,7 +422,7 @@
 
 #define DELAY_SYNC_MIN 0
 #define DELAY_SYNC_MAX 9
-#define DELAY_SYNC_DEFAULT 7
+#define DELAY_SYNC_DEFAULT 0
 
 #define REVERB_ROOMSIZE_MIN 0
 #define REVERB_ROOMSIZE_MAX 100

synth_dexed.h

@@ -1,6 +1,5 @@
 #include <Arduino.h>
 #include <Audio.h>
-#include <OpenAudio_ArduinoLibrary.h>
 #include "config.h"
 
 /*****************************************************