ws2812b效果研究之二 blink

对应于arduino中的fastled库中的blink例子，没啥好说的，也没啥算法，简单就可以理解。

/// @file    Blink.ino
/// @brief   Blink the first LED of an LED strip
/// @example Blink.ino

#include <FastLED.h>

// How many leds in your strip?
#define NUM_LEDS 108

// For led chips like WS2812, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
// Clock pin only needed for SPI based chipsets when not using hardware SPI
#define DATA_PIN 2
#define CLOCK_PIN 13

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup() { 
    // Uncomment/edit one of the following lines for your leds arrangement.
    // ## Clockless types ##

     FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);  // GRB ordering is typical

}

void loop() { 
  // Turn the LED on, then pause
  for(int i=0;i<NUM_LEDS;i+=5)
      leds[i] = CRGB::Green;
  FastLED.show();
  delay(500);
  // Now turn the LED off, then pause
  for(int i=0;i<NUM_LEDS;i++)
    leds[i] = CRGB::Black;
  FastLED.show();
  delay(500);
}