Added Teensy internal DAC output option and set defaut output.

MicroDexed.ino

@@ -80,6 +80,10 @@ AudioOutputI2S           i2s1;
 AudioConnection          patchCord11(volume_r, 0, i2s1, 0);
 AudioConnection          patchCord12(volume_l, 0, i2s1, 1);
 AudioControlWM8731master wm8731_1;
+#elif defined(TEENSY_DAC)
+AudioOutputAnalogStereo  dacOut;
+AudioConnection          patchCord11(volume_r, 0, dacOut, 0);
+AudioConnection          patchCord12(volume_l, 0, dacOut, 1);
 #else
 AudioOutputPT8211        pt8211_1;
 AudioConnection          patchCord11(volume_r, 0, pt8211_1, 0);
@@ -190,6 +194,8 @@ void setup()
   wm8731_1.enable();
   wm8731_1.volume(1.0);
   Serial.println(F("TGA board enabled."));
+#elif defined(TEENSY_DAC)
+  Serial.println(F("Internal DAC enabled."));
 #else
   Serial.println(F("PT8211 enabled."));
 #endif

config.h

@@ -51,8 +51,10 @@
 #define MIDI_DEVICE_NUMBER 0
 
 // AUDIO
-// If nothing is defined PT8211 is used as audio output device!
-#define TEENSY_AUDIO_BOARD 1
+// 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 TEENSY_DAC
+// #define TEENSY_AUDIO_BOARD 1
 // #define TGA_AUDIO_BOARD
 
 //*************************************************************************************************