// https://www.hackster.io/AhmedDarwish/dancing-fountain-arduino-with-msgeq7-spectrum-analyzer-a1fd46
// test for Arduino Nano
#define msg7RESET 3  // pin 7 on MSGEQ7
#define msg7Strobe 2  // pin 4 on MSGEQ7
#define msg7DCout 0   // pin 3 on MSGEQ7
const int LEDpins[7] = {4,5,6,7,8,9,10};

unsigned short numLEDs = 119; //per block
unsigned short LEDsPerStrip = numLEDs / 7;
unsigned short minMAPlimit = 0; //limits used to convert MSGEQ7 values
unsigned short maxMAPlimit = LEDsPerStrip;
unsigned short noiseFilter = 90; //used to get rid of unwanted noise
unsigned short readDataDelay = 3;
int bands[7];

void setup()
{
  Serial.begin(115200);
  Serial.println("Start setup");
  // for (int x=0; x<7; x++)
  // {
  //   pinMode(LEDpins[x], OUTPUT);
  // }
  pinMode(msg7RESET, OUTPUT);
  digitalWrite(msg7RESET, LOW);
  
  pinMode(msg7Strobe, OUTPUT);
  digitalWrite(msg7Strobe, LOW);
  pinMode(msg7DCout, INPUT);
}
void loop()
{
  readMSGEQ7();
    for (int i = 0 ; i < 7 ; i++)
    {
      Serial.print(i);
      Serial.print(" - ");
      Serial.println(bands[i]);
    }
  // digitalWrite(msg7RESET, HIGH);
  // delay(5);
  // digitalWrite(msg7RESET, LOW);
  // for (int x = 0 ; x < 7 ; x++)
  // {
  //   //Serial.print("x value : ");
  //   //Serial.println(x);
  //   digitalWrite(msg7Strobe, LOW);
  //   delayMicroseconds(35);
  //   int spectrumRead = analogRead(msg7DCout);
  //   //int spectrumRead = random(10, 1024);

  //   //Serial.print("x spectrumRead : ");
  //   //Serial.println(spectrumRead);
  //   int PWMvalue = map(spectrumRead, 0, 1024, 0, 255);
  // if (PWMvalue < 50)
  //   PWMvalue = PWMvalue / 2;
  // analogWrite(LEDpins[x], PWMvalue);
  // //digitalWrite(LEDpins[x], HIGH);
  // digitalWrite(msg7Strobe, HIGH);
  // //Serial.println(PWMvalue);
  // //delay(500);
  // }
  delay(3000);
}

void readMSGEQ7()  {
  digitalWrite(msg7RESET, HIGH);
  delayMicroseconds(2);
  digitalWrite(msg7RESET, LOW);
  delayMicroseconds(75);
  for (int i = 0 ; i < 7 ; i++)
  {
    digitalWrite(msg7Strobe, LOW);
    //delayMicroseconds(40);
    bands[i] = analogRead(msg7DCout);
    
    digitalWrite(msg7Strobe, HIGH);
    bands[i] = constrain(bands[i], noiseFilter, 1023); //getting rid of that noise
		//rightMSGEQ[i] = constrain(rightMSGEQ[i], noiseFilter, 1023);

		//bands[i] = map(bands[i], noiseFilter, 1023, minMAPlimit, maxMAPlimit); //convert to more suitable values
		//rightMSGEQ[i] = map(rightMSGEQ[i], noiseFilter, 1023, minMAPlimit, maxMAPlimit);
    delayMicroseconds(readDataDelay);
  }
  digitalWrite(msg7Strobe, LOW);
  digitalWrite(msg7RESET, LOW);
  delayMicroseconds(10);
  
}