Removed AUDIO_BLOCK_SIZE in config.h

Added support for optionaly not using the reverb (needed for T_3.x when
xruns appear).

MicroDexed.ino

@@ -313,8 +313,11 @@ void setup()
   master_mixer_r.gain(0, 1.0);
   master_mixer_l.gain(0, 1.0);
 
+#ifdef USE_REVERB
   freeverbs1.roomsize(configuration.reverb_roomsize / 100.0);
   freeverbs1.damping(configuration.reverb_damping / 100.0);
+#endif
+
   master_mixer_r.gain(1, 0.0);
   master_mixer_l.gain(1, 0.0);
 

UI.hpp

@@ -146,12 +146,10 @@ void UI_func_engine(uint8_t param);
 void UI_func_information(uint8_t param);
 void UI_func_voice_selection(uint8_t param);
 void UI_func_volume(uint8_t param);
-void UI_func_back(uint8_t param);
+void UI_function_not_enabled(void);
-void UI_func_goToRootMenu(uint8_t param);
 void lcd_display_int(int16_t var, uint8_t size, bool zeros, bool brackets, bool sign);
 void lcd_display_float(float var, uint8_t size_number, uint8_t size_fraction, bool zeros, bool brackets, bool sign);
 
-
 // normal menu
 LCDMenuLib2_menu LCDML_0(255, 0, 0, NULL, NULL); // normal root menu element (do not change)
 LCDMenuLib2 LCDML(LCDML_0, _LCDML_DISP_rows, _LCDML_DISP_cols, lcdml_menu_display, lcdml_menu_clear, lcdml_menu_control);
@@ -777,6 +775,7 @@ void UI_func_sound(uint8_t param)
 
 void UI_func_reverb_roomsize(uint8_t param)
 {
+#ifdef USE_REVERB
   if (LCDML.FUNC_setup())         // ****** SETUP *********
   {
     // setup function
@@ -816,10 +815,14 @@ void UI_func_reverb_roomsize(uint8_t param)
     // you can here reset some global vars or do nothing
     eeprom_write();
   }
+#else
+  UI_function_not_enabled();
+#endif
 }
 
 void UI_func_reverb_damping(uint8_t param)
 {
+#ifdef USE_REVERB
   if (LCDML.FUNC_setup())         // ****** SETUP *********
   {
     // setup function
@@ -859,10 +862,14 @@ void UI_func_reverb_damping(uint8_t param)
     // you can here reset some global vars or do nothing
     eeprom_write();
   }
+#else
+  UI_function_not_enabled();
+#endif
 }
 
 void UI_func_reverb_level(uint8_t param)
 {
+#ifdef USE_REVERB
   if (LCDML.FUNC_setup())         // ****** SETUP *********
   {
     // setup function
@@ -904,6 +911,9 @@ void UI_func_reverb_level(uint8_t param)
     // you can here reset some global vars or do nothing
     eeprom_write();
   }
+#else
+  UI_function_not_enabled();
+#endif
 }
 
 void UI_func_chorus_frequency(uint8_t param)
@@ -1706,6 +1716,31 @@ void UI_func_volume(uint8_t param)
   lcd.show(1, 15, 1, "]");
 }
 
+void UI_function_not_enabled(void)
+{
+  if (LCDML.FUNC_setup())         // ****** SETUP *********
+  {
+    // setup function
+    lcd.setCursor(0, 0);
+    lcd.print(F("Function not"));
+    lcd.setCursor(0, 1);
+    lcd.print(F("enabled!"));
+  }
+
+  if (LCDML.FUNC_loop())          // ****** LOOP *********
+  {
+    if (LCDML.BT_checkEnter())
+    {
+      LCDML.FUNC_goBackToMenu();
+    }
+  }
+
+  if (LCDML.FUNC_close())     // ****** STABLE END *********
+  {
+    // you can here reset some global vars or do nothing
+  }
+}
+
 void lcd_display_int(int16_t var, uint8_t size, bool zeros, bool brackets, bool sign)
 {
   int16_t tmp = 0;
@@ -1736,6 +1771,7 @@ void lcd_display_int(int16_t var, uint8_t size, bool zeros, bool brackets, bool
   {
     p = int(pow(10, i));
     tmp = int(var / p);
+
     if (tmp == 0)
     {
       if (zeros == true)
@@ -1773,6 +1809,14 @@ void lcd_display_float(float var, uint8_t size_number, uint8_t size_fraction, bo
   if (brackets == true)
     lcd.print(F("["));
 
+  if (int(number) == 0)
+  {
+    if (zeros == true)
+      lcd.print(F("00"));
+    else
+      lcd.print(F(" 0"));
+  }
+  else
     lcd_display_int(int(number), size_number, zeros, false, sign);
   lcd.print(F("."));
   lcd_display_int(round(fraction * pow(10, size_fraction)), size_fraction, true, false, false);

config.h

@@ -30,33 +30,29 @@
 
 // ATTENTION! For better latency you have to redefine AUDIO_BLOCK_SAMPLES from
 // 128 to 64 in <ARDUINO-IDE-DIR>/cores/teensy3/AudioStream.h
-#define AUDIO_BLOCK_SAMPLES 64
 
 // If you want to test the system with Linux and withous any keyboard and/or audio equipment, you can do the following:
 // 1. In Arduino-IDE enable "Tools->USB-Type->Serial + MIDI + Audio"
 // 2. Build the firmware with "MIDI_DEVICE_USB" enabled in config.h.
-// 3. Afterconnecting to a Linux system there should be a MIDI an audio device available that is called "MicroMDAEPiano", so you can start the following:
+// 3. Afterconnecting to a Linux system there should be a MIDI an audio device available that is called "MicroMDexed", so you can start the following:
 // $ aplaymidi -p 20:0 <MIDI-File> # e.g. test.mid
 // $ arecord -f cd -Dhw:1,0 /tmp/bla.wav
 
-
+#define VERSION "0.9.8"
-#define VERSION "0.9.7"
 
 //*************************************************************************************************
 //* DEVICE SETTINGS
 //*************************************************************************************************
 
 // MIDI
-#define MIDI_DEVICE_DIN Serial1
+//#define MIDI_DEVICE_DIN Serial1
-//#define AUDIO_DEVICE_USB
+#define MIDI_DEVICE_USB 1
-//#define MIDI_DEVICE_USB 1
+#define MIDI_DEVICE_USB_HOST 1
-//#define MIDI_DEVICE_USB_HOST 1
-//#define MIDI_DEVICE_NUMBER 0
 
 // AUDIO
 // If nothing is defined Teensy internal DAC is used as audio output device!
 // Left and right channel audio signal is presented on pins A21 and A22.
-//#define AUDIO_DEVICE_USB
+#define AUDIO_DEVICE_USB
 //#define TEENSY_DAC
 //#define TEENSY_DAC_SYMMETRIC
 //#define TEENSY_AUDIO_BOARD
@@ -83,13 +79,12 @@
 #define MOD_WAVEFORM WAVEFORM_TRIANGLE // WAVEFORM_SINE WAVEFORM_TRIANGLE WAVEFORM_SAWTOOTH WAVEFORM_SAWTOOTH_REVERSE
 #define MOD_FILTER_OUTPUT MOD_LINKWITZ_RILEY_FILTER_OUTPUT // MOD_LINKWITZ_RILEY_FILTER_OUTPUT MOD_BUTTERWORTH_FILTER_OUTPUT MOD_NO_FILTER_OUTPUT
 #define MOD_FILTER_CUTOFF_HZ 3000
-#define USE_REVERB 1
+//#define USE_REVERB 1
 
 //*************************************************************************************************
 //* AUDIO SETTINGS
 //*************************************************************************************************
 // https://rechneronline.de/funktionsgraphen/
-#define VOLUME_CURVE 0.07
 #ifndef TEENSY_AUDIO_BOARD
 #if AUDIO_BLOCK_SAMPLES == 64
 #define AUDIO_MEM 450
@@ -99,6 +94,7 @@
 #define DELAY_MAX_TIME 600
 #define REDUCE_LOUDNESS 1
 #else
+#define SGTL5000_LINEOUT_LEVEL 29
 #if AUDIO_BLOCK_SAMPLES == 64
 #define AUDIO_MEM 900
 #else
@@ -117,7 +113,6 @@
 #define STANDARD_LCD_I2C
 //#define OLED_SPI
 
-
 // LCD Display
 //I2C_DISPLAY only
 #ifdef STANDARD_LCD_I2C
@@ -166,20 +161,19 @@
 #define TEENSY4
 #endif
 
-// Teensy Audio Shield:
+// Teensy Audio Shield (not used)
 //#define SDCARD_CS_PIN    10
 //#define SDCARD_MOSI_PIN  7
 //#define SDCARD_SCK_PIN   14
-#define SGTL5000_LINEOUT_LEVEL 29
 #ifndef TEENSY4
 // Teensy 3.5 & 3.6 SD card
 #define SDCARD_CS_PIN    BUILTIN_SDCARD
-#define SDCARD_MOSI_PIN  11  // not actually used
+#define SDCARD_MOSI_PIN  11
-#define SDCARD_SCK_PIN   13  // not actually used
+#define SDCARD_SCK_PIN   13
 #else
 #define SDCARD_CS_PIN    10
-#define SDCARD_MOSI_PIN  11  // not actually used
+#define SDCARD_MOSI_PIN  11
-#define SDCARD_SCK_PIN   13  // not actually used
+#define SDCARD_SCK_PIN   13
 #endif
 
 // Encoder with button
@@ -200,8 +194,6 @@
 #define BUT_DEBOUNCE_MS 20
 #define LONG_BUTTON_PRESS 500
 
-
-
 // Internal timer
 #define AUTOSTORE_MS 5000
 #define VOICE_SELECTION_MS 2000

effect_stereo_mono.h

@@ -37,7 +37,7 @@ class AudioEffectStereoMono : public AudioStream
     AudioEffectStereoMono(void):
       AudioStream(2, inputQueueArray)
     {
-      _enabled = false;
+      _enabled = true;
     }
 
     virtual void update(void);