/*
 * 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.
 *
 * This example code is in the public domain.
 */

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#define PIN        22
#define NUMPIXELS 12

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 500

// GUItool: begin automatically generated code
AudioInputI2S            i2s1;           //xy=200,69
AudioOutputI2S           i2s2;           //xy=365,94 

AudioConnection          patchCord1(i2s1, 0, i2s2, 0);
AudioConnection          patchCord2(i2s1, 1, i2s2, 1);

AudioControlSGTL5000     sgtl5000_1;     //xy=302,184
// GUItool: end automatically generated code


const int myInput = AUDIO_INPUT_LINEIN;

const int PWMpin1=20;

void setup() {
  // Audio connections require memory to work.  For more
  // detailed information, see the MemoryAndCpuUsage example
  AudioMemory(12);
  pinMode(PWMpin1, OUTPUT);

  // Enable the audio shield, select input, and enable output
  sgtl5000_1.enable();
  sgtl5000_1.inputSelect(myInput);
  sgtl5000_1.volume(0.5);
  analogWriteFrequency(PWMpin1, 40000);
  analogWrite(PWMpin1, 127); //initialze at 50% duty cycle
  pixels.begin();
  Serial.begin(9600);
  
}

elapsedMicros volmsec=0;
int counter = 0;
void loop() {
  // every 50 us, adjust the volume

  if (volmsec >= 20000) {
     float vol = analogRead(15);
    vol = vol / 1023.0;
    //audioShield.volume(vol); // <-- uncomment if you have the optional
    volmsec = 0;               //     volume pot on your audio shield
    if (counter%2==0) {
      for(int i=0; i<NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(counter, 0, counter));
        pixels.show();
      }
      if (counter == 50) {
        counter = 0;
      }
    }
    
    counter += 1;
  }
  if (volmsec > 100) {
    int audio_analog = analogRead(A7);
    int mapped = map(audio_analog, -127, 127, 0, 255);
    analogWrite(PWMpin1, mapped);
    Serial.println(mapped);
  }
  
}