| 复制代码/*
Exploring Arduino - Code Listing 2-3: LED Fade Sketch
http://www.exploringarduino.com/content/ch2
Copyright 2013 Jeremy Blum ( http://www.jeremyblum.com )
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License v3 as published by
the Free Software Foundation.
*/
const int LED=9;   //define LED for Pin 9
void setup()
{
  pinMode (LED, OUTPUT);    //Set the LED pin as an output
}
void loop()
{
  for (int i=0; i<256; i++)
  {
    analogWrite(LED, i);
    delay(10);
  }
  for (int i=255; i>=0; i--)
  {
    analogWrite(LED, i);
    delay(10);
  }
}
 
 如何将以上两个代码合在一起做出一个可以在切换LED灯同时让LED灯拥有呼吸灯的状态?
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