**兩隻小豬**

 此程式碼使用TIME函數，利用呼叫副程式的方式，來達到同步，因此省去delay，避免子程式互相延遲的問題。總共有4個子程式，分別是夜光燈、底部呼吸燈與2個音樂撥放程式。程式撰寫與測試的時間差不多2天。

#include <Arduino.h>
#include <SoftwareSerial.h>
#include "Garan.h"
#include "Timer.h"

Timer t;
const int bottomSet[4]={2,4,7,12};
const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = 11; // Analog output pin that the LED is attached to
int brightness[4] = {0,64,128,192};
int fadeAmount[4] = {5,5,5,5};

#if !defined(__MSP430_CPU__)
SoftwareSerial garanSerial(8, 10); // RX, TX
#else
SoftwareSerial garanSerial(P1_4, P1_5); // RX, TX
#endif
Garan player(garanSerial);
void setup() {
  pinMode(bottomSet[4],INPUT);
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(9, OUTPUT);
  t.every(100, music,1);
  t.every(100, musicSET);
  t.every(random(10)*random(10), ThePwm);
  t.every(1000, NightLed);
} 
void loop() {
  t.update();
}
//--------------------------------------------------------------------
void music()
{
  player.sequencePlay(2);
  player.setVolume(15);
}
void musicSET()
{
  for(int i=0;i<4;i++ )
  {
    if (digitalRead(bottomSet[i])==HIGH)
    {
      switch(i)
      {
        case 0:
          player.volumeDown();
        break;
        case 1:
          player.volumeUp();
        break;
        case 2:
          player.prev();
        break;
        case 3:
          player.next();
        break;
      }
    }
  }
}
void ThePwm()
{
  for (int i=0;i<4;i++){
    switch (i)
    {
      case 0:
        analogWrite(3, brightness[0]);
      break;
      case 1:
        analogWrite(5, brightness[1]);
      break;
      case 2:
        analogWrite(6, brightness[2]);
      break;
      case 3:
        analogWrite(9, brightness[3]);
      break;
    }
    brightness[i] = brightness[i] + fadeAmount[i];
    if (brightness[i] <= 0 || brightness[i] >= 255) {
      fadeAmount[i] = -fadeAmount[i] ; 
    }    
  }
}

void NightLed()
{
  int sensorValue = analogRead(analogInPin);          
  if (sensorValue >=1000 ){
    analogWrite(analogOutPin,255); 
  }
  else {digitalWrite(analogOutPin,LOW); }
}