/********************************

 since the amtel avr xplained is actuaaly nanao v3 
with built in rgb strip of 3 leds connected to pin 2 as
 data input to run amtel avr xplained go to arduino ide and 
 install from board maneger
 amtel avr xplained mini and upload the code
 since the mcu is not a component of wokwi i used arduino nanao
 the three leds sepaeratl shown are built in board


 arvind patil 23/07/24

****************************************/

#include <Adafruit_NeoPixel.h>

#include <Adafruit_NeoPixel.h>

#define PIN        2   // The pin connected to the NeoPixel strip
#define NUMPIXELS  3  // The number of LEDs in the strip

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  rainbowCycle(20);  // Rainbow cycle with delay
}

// Function to generate rainbow colors across 0-255 positions
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if (WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  } else if (WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  } else {
    WheelPos -= 170;
    return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  }
}

// Function for rainbow cycle
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for (j = 0; j < 256 * 5; j++) { // 5 cycles of all colors on wheel
    for (i = 0; i < strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}