#include "fix_fft.h"                                  
// fixed point Fast Fourier Transform library
/*
 * Simple Wokwi Microphone Demo
 https://spectrogram.sciencemusic.org/
 https://vk.com/club171670176
 https://github.com/juraspb/MusicToColor
 https://mysku.club/blog/diy/57947.html
 https://habr.com/ru/post/409893/?fl=ru,en
 https://mysku.club/blog/diy/65801.html
 https://learn.adafruit.com/gemma-powered-neopixel-led-sound-reactive-drums/circuit-diagram
 https://www.tweaking4all.com/hardware/arduino/adruino-led-strip-effects/#cylon
 */
const byte pinA = 13;
const byte val_num_samples = 255;
int myOffset[] = {100, 200, 300, 400, 500, 600, 700, 800, 900, 1000};

void setup() {
  Serial.begin(115200);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  //Serial.println("Hello Computer");
  //Serial.println("Hello Serial 1");
  //Serial.println("Hello Serial 2");
  //Serial.println("Hello Serial 3");
  analogReference(EXTERNAL);
}

void loop() {
for (byte i = 0; i < 10; i++)
{
  digitalWrite(10, HIGH);
  delay(5);
  
  int sample = analogRead(A0);
  Serial.print(abs(sample - 512)+myOffset[i]);
  Serial.print(" ");
  digitalWrite(13, abs(sample - 512) > 2 && abs(sample - 512) < 50);
  digitalWrite(12, abs(sample - 512) > 51 && abs(sample - 512) < 100);
  digitalWrite(11, abs(sample - 512) > 101 && abs(sample - 512) < 200);
  
  digitalWrite(10, LOW);
  delay(5);
}
Serial.println();
  //delay(500);
  //int sample = analogRead(A0);
  //Serial.println(abs(sample - 512));
  /*for (byte i = 0; i < numSamples; i++) {                    // read 128 analog input samples from ADC
   digitalWrite(13, HIGH);
    delay(500);
    int sample = analogRead(A0);
    Serial.println(sample);
    //re[i] = sample / 4 - numSamples;                         // scale the samples to fit within a char variable
    //im[i] = 0;                                        // there are no imaginary samples associated with the time domain so set to 0
  };*/
  /*
  */
  /*
  if (abs(sample - 512) > 10)
  {
    
  }
  */
    

}