OpenAudio_ArduinoLibrary/examples/Tympan_TLV320AIC/Tympan_TLV320AIC.ino

/*
 * Tympan_TLV320AIC.ino
 * 
 * Created: BPF and WEA, Creare LLC, Jan/Feb 2017
 * Purpose: Demonstrate basic audio pass-thru using the Tympan Audio Board,
 *     which is based on the TI TLV320AIC3206
 * 
 * License: MIT License, Use At Your Own Risk
 * 
 */

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
#include <OpenAudio_ArduinoLibrary.h>  //AudioControlTLV320AIC3206 lives here

// define audio classes and connections
AudioControlTLV320AIC3206       tlv320aic3206_1;
AudioInputI2S       audioInput; 
AudioOutputI2S      audioOutput;  
AudioConnection          patchCord1(audioInput, 0, audioOutput, 0);
AudioConnection          patchCord2(audioInput, 1, audioOutput, 1);

// define the setup
void setup(void)
{
  //allocate the audio memory first
  AudioMemory(160);  //big number to accomodate the delay effect

  //begin the serial comms
  Serial.begin(115200);
  delay(500);
  Serial.println("Tympan_TLV320AIC: starting...");
  
  // Setup the TLV320
  tlv320aic3206_1.enable(); // activate AIC

  // Choose the desired input
  tlv320aic3206_1.inputSelect(TYMPAN_INPUT_ON_BOARD_MIC); // use the on board microphones // default
  //  tlv320aic3206_1.inputSelect(TYMPAN_INPUT_JACK_AS_MIC); // use the microphone jack - defaults to mic bias 2.5V
  //  tlv320aic3206_1.inputSelect(TYMPAN_INPUT_JACK_AS_LINEIN); // use the microphone jack - defaults to mic bias OFF
  //  tlv320aic3206_1.inputSelect(TYMPAN_INPUT_LINE_IN); // use the line in pads on the TYMPAN board - defaults to mic bias OFF

  //Adjust the MIC bias, if using TYMPAN_INPUT_JACK_AS_MIC
  //  tlv320aic3206_1.setMicBias(TYMPAN_MIC_BIAS_OFF); // Turn mic bias off
  //  tlv320aic3206_1.setMicBias(TYMPAN_MIC_BIAS_2_5); // set mic bias to 2.5 // default
  //  tlv320aic3206_1.setMicBias(TYMPAN_MIC_BIAS_1_7); // set mic bias to 1.7
  //  tlv320aic3206_1.setMicBias(TYMPAN_MIC_BIAS_1_25); // set mic bias to 1.25
  //  tlv320aic3206_1.setMicBias(TYMPAN_MIC_BIAS_VSUPPLY); // set mic bias to supply voltage

  // VOLUMES
  tlv320aic3206_1.volume(10);  // -63.6 to +24 dB in 0.5dB steps.  uses float
  tlv320aic3206_1.micGain(10); // set MICPGA volume, 0-47.5dB in 0.5dB setps

  Serial.println("Done");
}

void loop(void)
{
  // Nothing to do - just looping input to output
  delay(2000);
  Serial.println("Running...");
}