Temp_DHT.ino

   1 /* YourDuino.com Example Software Sketch
   2    DHT11 Humidity and Temperature Sensor test
   3    Credits: Rob Tillaart
   4    http://arduino-direct.com/sunshop/index.php?l=product_detail&p=162
   5    terry@yourduino.com */
   6
   7 /*-----( Import needed libraries )-----*/
   8 #include <dht11.h>
   9 #include <Wire.h>
  10 #include <BMP085.h>
  11 #include <WeatherSensorWH2.h>
  12
  13 /*-----( Declare objects )-----*/
  14 dht11 DHT11;
  15 BMP085 bmp;
  16
  17 /*-----( Declare Constants, Pin Numbers )-----*/
  18 #define DHT11PIN 4
  19
  20 #define RF_IN 3
  21
  22 #define REDPIN 11
  23 #define GREENPIN 12
  24
  25 volatile byte got_interval = 0;
  26 volatile byte interval = 0;
  27
  28 volatile unsigned long old = 0, packet_count = 0;
  29 volatile unsigned long spacing, now, average_interval;
  30
  31 WeatherSensorWH2 weather;
  32
  33 ISR(TIMER1_COMPA_vect)
  34 {
  35   static byte count = 0;
  36   static byte was_hi = 0;
  37
  38   if (digitalRead(RF_IN) == HIGH) {
  39     count++;
  40     was_hi = 1;
  41   } else {
  42     if (was_hi) {
  43       was_hi = 0;
  44       interval = count;
  45       got_interval = 1;
  46       count = 0;
  47     }
  48   }
  49 }
  50
  51 void setup()   /*----( SETUP: RUNS ONCE )----*/
  52 {
  53   Serial.begin(9600);
  54   Serial.println("STATUS:START");
  55
  56   bmp.begin();
  57
  58   pinMode(REDPIN,OUTPUT);
  59   pinMode(GREENPIN,OUTPUT);
  60
  61   pinMode(RF_IN, INPUT);
  62   TCCR1A = 0x00;
  63   TCCR1B = 0x09;
  64   TCCR1C = 0x00;
  65   OCR1A = 399;
  66   TIMSK1 = 0x02;
  67   sei();
  68
  69 }/*--(end setup )---*/
  70
  71 unsigned long previousMillis = 0;
  72 unsigned long indoor_interval = 60000;
  73 unsigned long outdoor_interval = 45000;
  74 unsigned long previousIndoor = 0;
  75 unsigned long previousOutdoor = 0;
  76
  77 void loop()   /*----( LOOP: RUNS CONSTANTLY )----*/
  78 {
  79
  80   byte i;
  81   byte *packet;
  82
  83   if (got_interval) {
  84     weather.accept(interval);
  85     if (weather.acquired()) {
  86       now = millis();
  87       spacing = now - old;
  88       old = now;
  89       packet_count++;
  90       average_interval = now / packet_count;
  91    /*
  92       Serial.print("Spacing: ");
  93       Serial.println(spacing, DEC);
  94       Serial.print("Packet count: ");
  95       Serial.println(packet_count, DEC);
  96
  97       Serial.print("Average spacing: ");
  98       Serial.println(average_interval, DEC);
  99
 100
 101       packet = weather.get_packet();
 102       for(i=0;i<5;i++) {
 103         Serial.print("0x");
 104         Serial.print(packet[i], HEX);
 105         Serial.print("/");
 106         Serial.print(packet[i], DEC);
 107         Serial.print(" ");
 108       }
 109
 110       Serial.print("crc: ");
 111       Serial.print(weather.calculate_crc(), HEX);
 112       Serial.println((weather.valid() ? " OK" : " BAD"));
 113
 114    */
 115
 116       if (weather.valid()) {
 117
 118         Serial.print("SENSOR:TYPE=OUTDOOR,");
 119
 120         Serial.print("ID=");
 121         Serial.print(weather.get_sensor_id(), HEX);
 122
 123         Serial.print(",HUMIDITY=");
 124         Serial.print(weather.get_humidity(), DEC);
 125
 126         Serial.print(",TEMPERATURE=");
 127         Serial.println(weather.get_temperature_formatted());
 128
 129         previousOutdoor = millis();
 130         digitalWrite(REDPIN,HIGH);
 131
 132       } else {
 133
 134         Serial.println("ERROR:OUTDOOR");
 135         previousOutdoor = millis();
 136         digitalWrite(REDPIN,LOW);
 137
 138       }
 139
 140      }
 141
 142    got_interval = 0;
 143
 144   }
 145
 146
 147   if ((unsigned long)(millis() - previousMillis) >= indoor_interval) {
 148
 149     previousMillis = millis();
 150
 151     int chk = DHT11.read(DHT11PIN);
 152
 153     if (chk==0) {
 154
 155       Serial.print("SENSOR:TYPE=INDOOR,");
 156       Serial.print("HUMIDITY=");
 157       Serial.println((float)DHT11.humidity, 2);
 158
 159 //      Serial.print(",TEMPERATURE=");
 160 //      Serial.println((float)DHT11.temperature, 2);
 161
 162       Serial.print("SENSOR:TYPE=BARO,");
 163       Serial.print("PRESSURE=");
 164       Serial.print(bmp.readPressure());
 165       Serial.print(",TEMPERATURE=");
 166       Serial.println(bmp.readTemperature());
 167
 168       previousIndoor = millis();
 169       digitalWrite(GREENPIN,HIGH);
 170
 171
 172     } else {
 173
 174       Serial.println("ERROR:INDOOR");
 175       previousIndoor = millis();
 176       digitalWrite(GREENPIN,LOW);
 177
 178     }
 179
 180   }
 181
 182   if ((unsigned long)(millis() - previousIndoor) >= indoor_interval*10) {
 183
 184       Serial.println("ERROR:INDOOR TIMEOUT");
 185       previousIndoor = millis();
 186       digitalWrite(GREENPIN,LOW);
 187
 188   }
 189
 190   if ((unsigned long)(millis() - previousOutdoor) >= outdoor_interval*10) {
 191
 192       Serial.println("ERROR:OUTDOOR TIMEOUT");
 193       previousOutdoor = millis();
 194       digitalWrite(REDPIN,LOW);
 195
 196   }
 197
 198
 199 }/* --(end main loop )-- */
 200
 201 /* ( THE END ) */