Initial commit

greenhouse.ino

+
+#include <dht.h>
+
+dht DHT;
+
+//#define __debug
+
+#define PROGRAM_VERSION "0.4.0"
+
+#define DHT11_PIN 2
+#define RelayPin 3
+#define LEDCount 6
+#define LED1Pin 4
+#define LED2Pin 5
+#define LED3Pin 6
+#define LED4Pin 7
+#define LED5Pin 8
+#define LED6Pin 9
+#define ButtonPin 13
+
+int leds[LEDCount];
+double Setpoint;
+int SetpointMode;
+boolean relayState;
+double temperaturaQueAchava;
+
+boolean fermentationMode;
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println("Kegerator");
+  Serial.print("PROGRAM VERSION: ");
+  Serial.println(PROGRAM_VERSION);
+  Serial.print("\tDHT LIBRARY VERSION: ");
+  Serial.println(DHT_LIB_VERSION);
+  Serial.println();
+  Serial.println("Type,  status,  Humidity (%),  Temperature (C),  Relay State (ON\\OFF)");
+
+  leds[0] = LED1Pin;
+  leds[1] = LED2Pin;
+  leds[2] = LED3Pin;
+  leds[3] = LED4Pin;
+  leds[4] = LED5Pin;
+  leds[5] = LED6Pin;
+  Setpoint = 24.0;
+  SetpointMode = 0;
+  temperaturaQueAchava = 200.0;
+  fermentationMode = false;
+
+  // Relay
+  relayState = false;
+  pinMode(RelayPin, OUTPUT);
+  digitalWrite(RelayPin, HIGH);
+
+  // LEDs
+  pinMode(LED1Pin, OUTPUT);
+  pinMode(LED2Pin, OUTPUT);
+  pinMode(LED3Pin, OUTPUT);
+  pinMode(LED4Pin, OUTPUT);
+  pinMode(LED5Pin, OUTPUT);
+  pinMode(LED6Pin, OUTPUT);
+  digitalWrite(LED1Pin, LOW);
+  digitalWrite(LED2Pin, LOW);
+  digitalWrite(LED3Pin, LOW);
+  digitalWrite(LED4Pin, LOW);
+  digitalWrite(LED5Pin, LOW);
+  digitalWrite(LED6Pin, LOW);
+
+  // Button
+  pinMode(ButtonPin, INPUT);
+}
+
+void loop()
+{
+  if ( hasBtnPressed() ) {
+
+    // increase mode
+    SetpointMode++;
+
+    // reset mode back to 0
+    if ( SetpointMode > 63 ) {
+      SetpointMode = 0;
+    }
+
+    // change leds
+    setLEDs(SetpointMode);
+
+
+    if ( SetpointMode > 31 ) {
+
+      // set fermentation mode
+      fermentationMode = true;
+
+      ///TODO set automatic fermentation temperatures
+      Setpoint = SetpointMode - 32 + 0.5;
+    }
+    else {
+
+      // set fermentation mode
+      fermentationMode = false;
+
+      // set manual temperatures
+      Setpoint = SetpointMode;
+    }
+  }
+
+  // Read data off of the DHT11 sensor
+  int chk = DHT.read11(DHT11_PIN);
+
+  // debug received data
+  debugDHT(chk);
+
+  double temperaturaQueDiz = DHT.temperature;
+  double tempetaturaQueEuAcho;
+
+  if (temperaturaQueAchava == 200.0)
+    temperaturaQueAchava = temperaturaQueDiz;
+
+  if (temperaturaQueAchava > temperaturaQueDiz)
+    tempetaturaQueEuAcho = temperaturaQueAchava - 0.25;
+  else if (temperaturaQueAchava < temperaturaQueDiz)
+    tempetaturaQueEuAcho = temperaturaQueAchava + 0.25;
+  else
+    tempetaturaQueEuAcho = temperaturaQueAchava;
+
+  //tempetaturaQueEuAcho = temperaturaQueDiz;
+
+#ifdef __debug
+  Serial.print("temperaturaAlvo = ");
+  Serial.print(Setpoint, 1);
+  Serial.print(", temperaturaQueDiz = ");
+  Serial.print(temperaturaQueDiz, 1);
+  Serial.print(",  tempetaturaQueEuAcho = ");
+  Serial.print(tempetaturaQueEuAcho, 1);
+  Serial.print(",  ");
+#endif
+
+  if ( tempetaturaQueEuAcho > (Setpoint + 1.0) ) {
+
+    // turn on compressor to start cooling
+    relayState = true;
+    digitalWrite( RelayPin, LOW );
+  }
+  else {
+    if ( tempetaturaQueEuAcho <= (Setpoint - 1.0) ) {
+
+      // turn off compressor to stop cooling
+      relayState = false;
+      digitalWrite( RelayPin, HIGH );
+    }
+  }
+
+#ifdef __debug
+  if (relayState) {
+    Serial.println( "ON" );
+  }
+  else {
+    Serial.println( "OFF" );
+  }
+#endif
+
+  temperaturaQueAchava = tempetaturaQueEuAcho;
+  delay(50);
+}
+
+void setLEDs( int number ) {
+  int calcNumber = number;
+
+  for ( int i = (LEDCount - 1); i >= 0; i++ ) {
+    boolean zero = calcNumber % 2 == 0 ? true : false;
+    calcNumber /= 2;
+
+    if (zero) {
+      digitalWrite(leds[i], LOW);
+    }
+    else {
+      digitalWrite(leds[i], HIGH);
+    }
+  }
+}
+
+boolean hasBtnPressed() {
+  if ( digitalRead(ButtonPin) == HIGH ) {
+
+    while ( digitalRead(ButtonPin) ) {
+      delay(20);
+    }
+
+    // debounce
+    delay(20);
+
+    return true;
+  }
+  else {
+    return false;
+  }
+}
+
+void debugDHT( int chk ) {
+#ifdef __debug
+  Serial.print("DHT11,   ");
+#endif
+  
+  switch (chk)
+  {
+    case DHTLIB_OK:
+#ifdef __debug
+      Serial.print("OK,  ");
+#endif
+      break;
+    case DHTLIB_ERROR_CHECKSUM:
+      Serial.print("Checksum error,  ");
+      break;
+    case DHTLIB_ERROR_TIMEOUT:
+      Serial.print("Time out error,  ");
+      break;
+    case DHTLIB_ERROR_CONNECT:
+      Serial.print("Connect error,  ");
+      break;
+    case DHTLIB_ERROR_ACK_L:
+      Serial.print("Ack Low error,  ");
+      break;
+    case DHTLIB_ERROR_ACK_H:
+      Serial.print("Ack High error,  ");
+      break;
+    default:
+      Serial.print("Unknown error,  ");
+      break;
+  }
+
+#ifdef __debug
+  //Serial.print(DHT.humidity, 1);
+  //Serial.print(",  ");
+#endif
+}
+