teensy-audio/examples/HardwareTesting/PassThroughQuad/PassThroughQuad.ino

/*
 * A simple hardware test which receives audio from the audio shield
 * Line-In pins and send it to the Line-Out pins and headphone jack.
 *
 * Four audio channels are used.
 *
 * This example code is in the public domain.
 */

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

// GUItool: begin automatically generated code
AudioInputI2SQuad        i2s_quad1;      //xy=150,69
AudioOutputI2SQuad       i2s_quad2;      //xy=365,94
AudioConnection          patchCord1(i2s_quad1, 0, i2s_quad2, 2);
AudioConnection          patchCord2(i2s_quad1, 1, i2s_quad2, 3);
AudioConnection          patchCord3(i2s_quad1, 2, i2s_quad2, 0);
AudioConnection          patchCord4(i2s_quad1, 3, i2s_quad2, 1);
AudioControlSGTL5000     sgtl5000_1;     //xy=302,184
AudioControlSGTL5000     sgtl5000_2;     //xy=302,254
// GUItool: end automatically generated code


const int myInput = AUDIO_INPUT_LINEIN;
//const int myInput = AUDIO_INPUT_MIC;


void setup() {
  // Audio connections require memory to work.  For more
  // detailed information, see the MemoryAndCpuUsage example
  AudioMemory(12);

  // Enable the first audio shield, select input, and enable output
  sgtl5000_1.setAddress(LOW);
  sgtl5000_1.enable();
  sgtl5000_1.inputSelect(myInput);
  sgtl5000_1.volume(0.5);

  // Enable the second audio shield, select input, and enable output
  sgtl5000_2.setAddress(HIGH);
  sgtl5000_2.enable();
  sgtl5000_2.inputSelect(myInput);
  sgtl5000_2.volume(0.5);
}

void loop() {
}