#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <effect_delay_ext8.h>

// GUItool: begin automatically generated code
AudioSynthWaveformSine   sine1;          //xy=382,432
AudioAmplifier           amp1;           //xy=606,441
AudioEffectDelayExternal delayExt1;      //xy=770,321
AudioMixer4              mixer1;         //xy=983,386
AudioOutputI2S           i2s1;           //xy=1131,343
AudioConnection          patchCord1(sine1, amp1);
AudioConnection          patchCord2(amp1, delayExt1);
AudioConnection          patchCord3(amp1, 0, mixer1, 1);
AudioConnection          patchCord4(delayExt1, 0, mixer1, 0);
AudioConnection          patchCord5(mixer1, 0, i2s1, 0);
AudioConnection          patchCord6(mixer1, 0, i2s1, 1);
AudioControlSGTL5000     sgtl5000;     //xy=943,541
// GUItool: end automatically generated code


void setup() {
  AudioMemory(100);

  sgtl5000.enable();
  sgtl5000.lineOutLevel(29);
  sgtl5000.dacVolumeRamp();
  sgtl5000.dacVolume(1.0);
  sgtl5000.unmuteHeadphone();
  sgtl5000.unmuteLineout();
  sgtl5000.volume(0.8,0.8); // Headphone volume
  sgtl5000.audioProcessorDisable();
  sgtl5000.autoVolumeDisable();
  sgtl5000.surroundSoundDisable();
  sgtl5000.enhanceBassDisable();
  delayExt1.delay(0,100);
  sine1.amplitude(1.0);
  sine1.frequency(440);
  sine1.phase(0.0);
  mixer1.gain(0,0.5);
  mixer1.gain(1,1.0);
  amp1.gain(1.0);
}

void loop() {
  static bool on_off;

  if(on_off)
    amp1.gain(0.0);
  else
    amp1.gain(1.0);
 
  on_off=!on_off;
 
  delay(1000);
}