Merged with alarm code

Arduino Code/Temp_Sensor/Temp_Sensor.ino

@@ -1,34 +1,43 @@
 #include <OneWire.h>
 #include <DallasTemperature.h>
 #include <EEPROM.h>
+#include <SimpleTimer.h>
 
 const int TSensor=4;
-const int LED=7;
-const int VALVE=2;
+const int ONLED=7;
+const int READYLED=2;
 
 const byte ON = 2;
 const byte OFF = 1;
 
-OneWire
-oneWire(TSensor);
+const int MAX_HOT = 35;
 
-DallasTemperature
-sensors(&oneWire);
+bool waitingCycles = false;
+int counterForHotWater = 0;
+bool timerStarted = false;
+
+OneWire oneWire(TSensor);
+
+DallasTemperature sensors(&oneWire);
+
+SimpleTimer timer;
+const int buzzer1=9;
+const int buzzer2=8;
 
 typedef struct {
   int targetTemp;
   int currentTemp;
-  bool hotValveClosed;
   bool coldValveClosed;
-  bool grayWaterClosed;
+  bool mainLineClosed;
+  bool showerReady;
 } stats;
 
 stats statuses;
 
 void setup(void) {
   // put your setup code here, to run once:
-  pinMode(LED,OUTPUT);
-  pinMode(VALVE,OUTPUT);
+  pinMode(ONLED,OUTPUT);
+  pinMode(READYLED,OUTPUT);
 
   Serial.begin(9600);
   sensors.begin();
@@ -42,22 +51,113 @@ void setup(void) {
   EEPROMWriteInt(0, temp);  
 
   statuses.targetTemp = temp;
-  statuses.currentTemp = 0;
-  statuses.hotValveClosed = true;
-  statuses.coldValveClosed = false;
-  statuses.grayWaterClosed = false;
+  statuses.currentTemp = 0; 
+  statuses.coldValveClosed = true;
+  statuses.mainLineClosed = false;
+  statuses.showerReady = false;
 
+  digitalWrite(ONLED,HIGH);
 }
 
-void loop(void) {
-  sensors.requestTemperatures();
+void firstwarning() {
+  tone(buzzer1,500);            //((buzzer1,500) to send 500Hz sound signal
+  delay(200);                     // for 0.5 sec
+  noTone(buzzer1);
+  tone(buzzer2,500);              //same
+  delay(500);
+  noTone(buzzer2);
+  timer.setTimeout(180000, secondwarning); // calls function after 3min
+}
+
+void secondwarning() {
+  timer.setTimer(5000, buzzerfunc1, 3);
+  timer.setInterval(60000, repeat); // repeats the function every 1min
+}
+void repeat() {                  //Calling functions to make the buzzer beep alternatively.
+  timer.setTimer(3000, buzzerfunc2, 5); // buzzerfunc2 will run 5 times every 3sec when function repeat is ran
+}
+
+void buzzerfunc1(){             //function for buzzer1
+  tone(buzzer1,700);            //((buzzer1,500) to send 700Hz sound signal
+  delay(500);                     // for 0.5 sec
+  noTone(buzzer1);
+  tone(buzzer2,700);            //((buzzer1,500) to send 700Hz sound signal
+  delay(700);                     // for 0.7 sec
+  noTone(buzzer2);
+}
 
-  if (sensors.getTempCByIndex(0) > 30) {
-    statuses.hotValveClosed = true;
+void buzzerfunc2(){             //function for buzzer1
+  tone(buzzer1,1000);            //((buzzer1,500) to send 1000Hz sound signal
+  delay(300);                     // for 0.3 sec
+  noTone(buzzer1);
+  tone(buzzer2,1000);            //((buzzer1,500) to send 1000Hz sound signal
+  delay(500);                     // for 0.5 sec
+  noTone(buzzer2);
+}
+
+void showerReadyAlert(){
+  tone(buzzer1,1000);         //((buzzer1,1000) to send 1000Hz sound signal
+  tone(buzzer2,1000);           //((buzzer2,1000) to send 1000Hz sound signal
+  delay(1000);                     // for 1 sec
+  noTone(buzzer1);
+  noTone(buzzer2);
+}
+
+void loop(void) {
+  //
+  // Look here for incoming iphone messages
+  // from serial port
+  //
+  //
+
+  if (waitingCycles) {
+    counterForHotWater += 1;
+
+    if (counterForHotWater == 5) {
+      //Open cold valve
+
+
+      waitingCycles = false;
+    }
+
   } else {
-    statuses.hotValveClosed = false;
-  }
+    sensors.requestTemperatures();
+    int currentTemp = sensors.getTempCByIndex(0);
+
+    if (counterForHotWater == 5) {
+      if (!(statuses.showerReady)) {
+        //Shower not ready
+        if (currentTemp > statuses.targetTemp) {
+          //Alert with app
+          statuses.showerReady = true;
+
+          //Alert with Buzzers and LED
+          showerReadyAlert();
+          digitalWrite(READYLED,HIGH);
+
+        }
+      } else {
+        // Shower begun, start timer
+        if (timerStarted == false) {
+          timer.setTimeout(300000, firstwarning);
+          timerStarted = true;
+        }
 
+        //Poll timer
+        timer.run();
+      }
+    } else {
+      //Waiting to enable cold valve
+      if (currentTemp > MAX_HOT) {
+        //Open cold valve
+        statuses.coldValveClosed = false;
+        waitingCycles = true;
+        counterForHotWater = 1;
+      }
+    }
+  }
+
+
   //Update current temperature
   statuses.currentTemp = (int)sensors.getTempCByIndex(0);