arduino_struct_array_demo.ino

// In this file I want to show how to create an array of a struct for the Arduino.
// I create a struct that contains ints for RGB color components.
// Then, I create an array of this struct, and use it to display a color 
// show on an Adafruit 40 RGB LED shield array.

// Check out my Arduino blog at txplore.com, and my video courses at txplore.tv!

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 6

Adafruit_NeoPixel strip = Adafruit_NeoPixel(40, PIN, NEO_GRB + NEO_KHZ800);

struct ledRGBComponents {
  int red;
  int green;
  int blue;
};

ledRGBComponents ledRGBSequence[] = {
  {255,0,0},
  {0,255,0},
  {0,0,255},
  {127,127,127},
  {100,50,150},
  {50,150,250}
 };

int counter;

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

void loop() {
  // Some example procedures showing how to display to the pixels:
  for (counter = 0; counter < sizeof(ledRGBSequence) - 1; counter++){
    colorWipe(strip.Color(ledRGBSequence[counter].red, ledRGBSequence[counter].green, ledRGBSequence[counter].blue), 50); 
  }

}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}