[嵌入式]Arduino的WS2812呼吸灯

基于FastLED库
6号引脚输出

#include"FastLED.h"

#define NUM_LEDS 12
#define DATA_PIN 6
#define LED_TYPE WS2812
#define COLOR_ORDER GRB

int value = 5;       //起始亮度
int deltaHue = 230;  //相邻灯珠色差
//uint8_t max_bright = value;

CRGB leds[NUM_LEDS];

void setup(){
    pinMode(DATA_PIN,OUTPUT);
    LEDS.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
    //FastLED.setBrightness(max_bright);
    Serial.begin(115200);
}

void loop(){
    for(; value < 50; value++){
        FastLED.setBrightness(value);
        fill_rainbow(leds, 12, 10, deltaHue); 
        FastLED.show();
        Serial.println(value);
        delay(50);
    }
    for(; value > 5; value--){
        FastLED.setBrightness(value);
        fill_rainbow(leds, 12, 10, deltaHue); 
        FastLED.show();
        Serial.println(value);
        delay(50);
    }
    delay(100);
}