#include <FastLED.h>
#define LED_PIN     0
#define NUM_LEDS    140
int frequency = 0; 
CRGB leds[NUM_LEDS];
//int frequency , amp;



void setup() {
  Serial.begin(9600);
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
 
}
 /*
  for (int i = 2; i < (SAMPLES/2); i++){       // Don't use sample 0 and only first SAMPLES/2 are usable. Each array element represents a frequency bin and its value the amplitude.
      

      if (i>0   && i<=5  ) bandValues[1]  += (int)vReal[i];
      if (i>5   && i<=10 ) bandValues[2]  += (int)vReal[i];
      if (i>10  && i<=15 ) bandValues[3]  += (int)vReal[i];
      if (i>15  && i<=20 ) bandValues[4]  += (int)vReal[i];
    
  }

  int barHeight = 35;

  for (byte band = 0; band < NUM_BANDS; band++) {

    // Scale the bars for the display
    int barHeight = bandValues[band] / AMPLITUDE; 
    if (barHeight > TOP) barHeight = TOP;

    // Small amount of averaging between frames
    barHeight = ((oldBarHeights[band] * 1) + barHeight) / 2;

    // Move peak up
    if (barHeight > peak[band]) {
      peak[band] = min(TOP, barHeight);
    }
  int barHeight = 35;

  for (byte band = 0; band < NUM_BANDS; band++) {

    // Scale the bars for the display
    int barHeight = bandValues[band] / AMPLITUDE; 
    if (barHeight > TOP) barHeight = TOP;

    // Small amount of averaging between frames
    barHeight = ((oldBarHeights[band] * 1) + barHeight) / 2;

    // Move peak up
    if (barHeight > peak[band]) {
      peak[band] = min(TOP, barHeight);
    }
*/
void loop() {

   if (Serial.available() > 0) {
    // read the incoming byte:
    frequency = Serial.read();

    // say what you got:
    Serial.print("I received: ");
    Serial.println(frequency, DEC);
  }
 
  for (int i = 0; i <= 140; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);
  }

if (frequency>0   && frequency<=5  ) 
{
for (int i = 0; i <= 35; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

}

if (frequency>5   && frequency<=10  ) 
{

for (int i = 0; i <= 35; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);
}

for (int i = 35; i <= 70; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

}

if (frequency>10   && frequency<=15  ) 
{

for (int i = 0; i <= 35; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}
for (int i = 35; i <= 70; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

for (int i = 70; i <= 105; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

}

if (frequency >= 25 ) 
{

for (int i = 0; i <= 35; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}
for (int i = 35; i <= 70; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

for (int i = 70; i <= 105; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

for (int i = 105; i <= 140; i++) {
    leds[i] = CRGB ( 0, 0, 255);
    FastLED.show();
    delay(40);

}

}


}