Added usb-audio output.

Removed TGA and PT8211 outputs due to heavy usage of the SGTL5000.

MicroMDAEPiano.ino

@@ -74,21 +74,13 @@ AudioConnection          patchCord13(freeverb_r, 0, mixer_r, 1);
 AudioConnection          patchCord14(freeverb_l, 0, mixer_l, 1);
 AudioConnection          patchCord15(mixer_r, volume_r);
 AudioConnection          patchCord16(mixer_l, volume_l);
-#if defined(TEENSY_AUDIO_BOARD)
+AudioOutputUSB           usb1;
+AudioConnection          patchCord17(volume_r, 0, usb1, 0);
+AudioConnection          patchCord18(volume_l, 0, usb1, 1);
 AudioOutputI2S           i2s1;
-AudioConnection          patchCord17(volume_r, 0, i2s1, 0);
+AudioConnection          patchCord19(volume_r, 0, i2s1, 0);
-AudioConnection          patchCord18(volume_l, 0, i2s1, 1);
+AudioConnection          patchCord20(volume_l, 0, i2s1, 1);
 AudioControlSGTL5000     sgtl5000_1;
-#elif defined(TGA_AUDIO_BOARD)
-AudioOutputI2S           i2s1;
-AudioConnection          patchCord17(volume_r, 0, i2s1, 1);
-AudioConnection          patchCord18(volume_l, 0, i2s1, 0);
-AudioControlWM8731master wm8731_1;
-#else
-AudioOutputPT8211        pt8211_1;
-AudioConnection          patchCord16(volume_r, 0, pt8211_1, 1);
-AudioConnection          patchCord17(volume_l, 0, pt8211_1, 0);
-#endif
 
 // Objects
 mdaEPiano* ep;
@@ -194,7 +186,6 @@ void setup()
   AudioNoInterrupts();
   AudioMemory(AUDIO_MEM);
 
-#ifdef TEENSY_AUDIO_BOARD
   sgtl5000_1.enable();
   sgtl5000_1.dacVolumeRamp();
   sgtl5000_1.dacVolume(1.0);
@@ -207,13 +198,6 @@ void setup()
   sgtl5000_1.autoVolumeEnable();
   sgtl5000_1.enhanceBassEnable();
   Serial.println(F("Teensy-Audio-Board enabled."));
-#elif defined(TGA_AUDIO_BOARD)
-  wm8731_1.enable();
-  wm8731_1.volume(1.0);
-  Serial.println(F("TGA board enabled."));
-#else
-  Serial.println(F("PT8211 enabled."));
-#endif
 
 #if defined (SHOW_DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
   // Initialize processor and memory measurements

config.h

@@ -39,11 +39,6 @@
 #define MIDI_DEVICE_USB 1
 #define MIDI_DEVICE_USB_HOST 1
 
-// AUDIO
-// If nothing is defined PT8211 is used as audio output device!
-#define TEENSY_AUDIO_BOARD 1
-//#define TGA_AUDIO_BOARD 1
-
 //*************************************************************************************************
 //* MIDI SETTINGS
 //*************************************************************************************************