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#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN D0

// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 30
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

// These constants won't change. They're used to give names to the pins used:
const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9;  // Analog output pin that the LED is attached to

int sensorValue = 0;  // value read from the pot
int outputValue = 0;  // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
  pinMode(WIO_LIGHT, INPUT);

  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.

  strip.begin();             // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();              // Turn OFF all pixels ASAP
  strip.setBrightness(255);  // Set BRIGHTNESS to about 1/5 (max = 255)
}

void loop() {
  // read the analog in value:
  sensorValue = analogRead(WIO_LIGHT);
  // map it to the range of the analog out:
  outputValue = map(sensorValue, 0, 1023, 0, 30);
  LightColor(strip.Color(255,   0,   0), outputValue);
  // change the analog out value:
  analogWrite(analogOutPin, outputValue);

  // print the results to the Serial Monitor:
  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\t output = ");
  Serial.println(outputValue);

  // wait 2 milliseconds before the next loop for the analog-to-digital
  // converter to settle after the last reading:
  delay(2);
}

void LightColor(uint32_t color1, int pin) {
  for (int i = 0; i < strip.numPixels(); i++) {  // For each pixel in strip...
    strip.setPixelColor(pin, color1);
    strip.setPixelColor(pin+1, strip.Color(0, 0, 0));
   /* strip.setPixelColor(pin + 1, color1);
    strip.setPixelColor(pin + 2, color1);  //  Set pixel's color (in RAM)
    strip.setPixelColor(pin + 3, strip.Color(0, 0, 0));
    strip.setPixelColor(pin - 1, strip.Color(0, 0, 0));
   */ strip.show();  //  Update strip to match
    delay(1);   //  Pause for a moment
  }
}

void doubleColor(uint32_t color1, uint32_t color2, int wait) {
  for (int i = 0; i < strip.numPixels(); i++) {  // For each pixel in strip...
    strip.setPixelColor(i, color1);
    strip.setPixelColor(i + 1, color1);
    strip.setPixelColor(i + 2, color1);  //  Set pixel's color (in RAM)
    strip.setPixelColor(i - 1, color2);
    strip.show();  //  Update strip to match
    delay(wait);   //  Pause for a moment
  }
}