Presence simulator

1/*** Presence simulator ***/
2
3#define numberOfLamps 2
4#define  LDRPin A5
5int relayPin[numberOfLamps]={2, 3};
6#define threshold 200
7#define  hysteresis 150
8
9int eveningLatency[numberOfLamps];
10int eveningDuration[numberOfLamps];
11int  morningDuration[numberOfLamps];
12int morningAnticipation[numberOfLamps];
13int  morningMaxOverflow=30;
14int nightMinDuration=240;
15int nightMaxDuration=1200;
16int  nightDuration=720; // Assume the first night duration 
17                       //  is 12 hours
18  //All values in minutes
19    
20enum {night, day} nightDay=day;
21
22/*
23Many  things depend on the time, so we
24need a chronometer.
25 */
26class chronometer
27{
28  unsigned long lastTime, actualTime;
29  public :
30  unsigned long elapsed;
31  void init(); // start the chronometer
32  void now();  // measure elapsed time  since init
33  chronometer();
34};
35
36void chronometer::init()
37{
38  actualTime=millis();
39  lastTime=actualTime;
40}
41
42void chronometer::now()
43{
44  actualTime=millis();
45  if (actualTime<lastTime) // Overflow of the millis couter
46    elapsed=(0xFFFFFFFFul-lastTime+actualTime);
47  else
48    elapsed=(actualTime-lastTime);
49}
50
51chronometer::chronometer()
52{
53  actualTime=millis();
54  lastTime=actualTime;
55}
56
57/* LDR and relay functions
58*/
59
60chronometer  lampChrono;
61
62void lampManagement(void)
63{
64  int limit1, limit2, limit3,  limit4, limit5, elapsedMinutes;
65
66  if(analogRead(LDRPin)>threshold)
67  {
68    for(int i=0; i<numberOfLamps; i++)
69      digitalWrite(relayPin[i],LOW);
70    if(nightDay==night) // The day has just began
71    {
72      nightDay=day;
73  /* Measure the duration of the previous night */
74      lampChrono.now();
75      if(lampChrono.elapsed>
76           ((unsigned long)nightMinDuration*60000ul)  &&
77         lampChrono.elapsed<
78           ((unsigned long)nightMaxDuration*60000ul))
79         nightDuration=
80           (int)(lampChrono.elapsed/60000ul);
81    }
82  }
83  else if(analogRead(LDRPin)<threshold-hysteresis) 
84  {
85    if(nightDay==day)  // The night has just began
86    {
87      nightDay=night;
88      lampChrono.init();
89      for (int relayNumber=0; relayNumber<numberOfLamps;
90               relayNumber++)
91      {
92        eveningDuration[relayNumber]=random(30, 120);
93        eveningLatency[relayNumber]=random(30);
94        morningDuration[relayNumber]=random(30,120);
95        morningAnticipation[relayNumber]=random(30);
96      }
97    }
98  }
99  if(nightDay==night)
100  {
101    lampChrono.now();
102    for(int relayNumber=0; relayNumber<numberOfLamps;
103            relayNumber++)
104    {
105      limit1=eveningLatency[relayNumber];
106      limit2=limit1+
107             eveningDuration[relayNumber];
108      limit3=nightDuration-
109             morningAnticipation[relayNumber]-
110             morningDuration[relayNumber];
111      limit4=limit3+
112             morningDuration[relayNumber];
113      limit5=nightDuration+morningMaxOverflow;
114      elapsedMinutes=(int)(lampChrono.elapsed/60000);
115      if((elapsedMinutes>=limit1 &&
116          elapsedMinutes<limit2)||
117         (elapsedMinutes>=limit3  &&
118          elapsedMinutes<limit4 &&
119          elapsedMinutes<limit5))
120         digitalWrite(relayPin[relayNumber],HIGH);
121       else
122         digitalWrite(relayPin[relayNumber],LOW);
123    }
124  }  
125}
126
127void functionalTest(void)
128{
129  while(millis()<10000)
130  {
131    if(analogRead(LDRPin)>threshold)
132    {
133      digitalWrite(relayPin[0],  LOW);
134      digitalWrite(relayPin[1], HIGH);
135    }
136    else if(analogRead(LDRPin)<threshold-hysteresis)
137    {
138      digitalWrite(relayPin[0], HIGH);
139      digitalWrite(relayPin[1],  LOW);
140    }
141  }
142  digitalWrite(relayPin[0], LOW);
143  digitalWrite(relayPin[1],  LOW);
144}
145
146void setup()
147{
148  for (int i=0; i<numberOfLamps; i++)
149  {
150    pinMode(relayPin[i], OUTPUT);
151    digitalWrite(relayPin[i], LOW);
152  }
153  analogReference(INTERNAL4V3);
154  functionalTest();
155}
156
157void loop()
158{
159    lampManagement();
160}
161