Add Rainbow Equalizer Pattern Music

Pattern #2 for Rainbow equalizer along the strip. Splits audio into 6
frequency ranges.

Scripts/NeoPixel.ino

@@ -5,44 +5,68 @@
 int analogPin=0; //A0 pin for reading frequency
 int strobePin=2; //Ask MSGEQ7 for data
 int resetPin=3; //End communication with MSGEQ7
-int spectrumValue[7]; //Array for frequencies
+//int spectrumValue[7]; //Array for frequencies
 int filter=80;
 int highest;
 int rotation=0;
 int rotationdelay=0;
 
-int pattern = 0;
+int pattern = 1;
 
 
 Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);
 
+//Define Specific colors
+uint32_t red = strip.Color(255, 0, 0);
+uint32_t orange = strip.Color(255, 127, 0);
+uint32_t yellow = strip.Color(255, 255, 0);
+uint32_t green = strip.Color(0, 255, 0);
+uint32_t blue = strip.Color(0, 0, 255);
+uint32_t purple = strip.Color(75, 0, 130);
+
 void setup() {
-  Serial.begin(9600); //Debugging serial port
+  //Serial.begin(9600); //Debugging serial port
   /**
   pinMode setup for MSGEQ7
   **/
+  strip.begin();
+  strip.show();
   pinMode(analogPin, INPUT);
   pinMode(strobePin, OUTPUT);
   pinMode(resetPin, OUTPUT);
-
+  analogReference(DEFAULT);
   digitalWrite(resetPin, LOW);
   digitalWrite(strobePin, HIGH);
-  strip.begin();
-  strip.show();
 }
 
 void loop() {
-  switch(pattern){
-    case 0:
-    colorLoopProgression();
-    break;
-    case 1:
-      //placeholder
-      break;
+  if(pattern ==0){
+      colorLoopProgression();
+  }else if(pattern == 1){
+      RainbowEqualizer();
   }
 }
 
+void RainbowEqualizer(){
+  digitalWrite(resetPin, HIGH);
+  digitalWrite(resetPin, LOW);
+
+  int spectrumValue[6];
+  for (int i = 0; i < 6; i++)
+  {
+   digitalWrite(strobePin, LOW);
+   delayMicroseconds(30); // to allow the output to settle
+   spectrumValue[i] = map(analogRead(analogPin), 0, 1023, 0, 9);
+   setPixel(i*10, i*10+spectrumValue[i]);
+   setReverse(i*10, i*10+spectrumValue[i]);
+   strip.show();
+   digitalWrite(strobePin, HIGH);
+  }
+  delay(30);
+}
+
   void colorLoopProgression(){
+    int spectrumValue[7];
     digitalWrite(resetPin, HIGH);
     digitalWrite(resetPin, LOW);
     for (int i=0;i<7;i++){
@@ -51,19 +75,19 @@ void loop() {
       spectrumValue[i]=analogRead(analogPin);
       spectrumValue[i]=constrain(spectrumValue[i], filter, 1023);
       spectrumValue[i]=map(spectrumValue[i], filter,1023,0,255);
-      Serial.print(spectrumValue[i]);
-      Serial.print(" ");
+      //Serial.print(spectrumValue[i]);
+      //Serial.print(" ");
       digitalWrite(strobePin, HIGH);
     }
-    Serial.println();
+    //Serial.println();
 
     highest =0;
     for(int i=0; i<7; i++){
       if(spectrumValue[i]>spectrumValue[highest]){
         highest = i;
       }
     }
-    Serial.println(highest);
+   // Serial.println(highest);
     for(int i=30; i<60; i++){
       if(i<30+(spectrumValue[highest]/9)){
         int highestt=0;
@@ -130,15 +154,53 @@ void loop() {
     rotationdelay++;
     strip.show();
   }
-  uint32_t Wheel(byte WheelPos) {
-  WheelPos = 255 - WheelPos;
-  if(WheelPos < 85) {
-    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+
+  void setPixel(int start_bit, int pixelValue){
+    for(int j=start_bit; j<pixelValue; j++){
+      strip.setPixelColor(j, colorChoose(start_bit));
+    }
+  }
+
+
+  void setReverse(int start_bit, int pixelValue){
+    for(int k=start_bit+9; k>pixelValue;k--){
+      strip.setPixelColor(k, 0,0,0);
+    }
   }
-  if(WheelPos < 170) {
-    WheelPos -= 85;
-    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+
+  uint32_t colorChoose(int start_bit){
+    switch (start_bit){
+      case 0:
+        return red;
+        break;
+      case 10:
+        return orange;
+        break;
+      case 20:
+        return yellow;
+        break;
+      case 30:
+        return green;
+        break;
+      case 40:
+        return blue;
+        break;
+      case 50:
+        return purple;
+        break;
+    }
   }
-  WheelPos -= 170;
-  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
+
+
+  uint32_t Wheel(byte WheelPos) {
+    WheelPos = 255 - WheelPos;
+    if(WheelPos < 85) {
+      return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+    }
+    if(WheelPos < 170) {
+      WheelPos -= 85;
+      return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+    }
+    WheelPos -= 170;
+    return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
 }