/*
 * 
 * Watering System v2.0
 * 
 * Resources:
 * 
 * LCD Wiring:
 * https://wiki.52pi.com/index.php?title=1602_Serial_LCD_Module_Display_SKU:Z-0234
 * 
 * LCD Libraries:
 * http://www.ardumotive.com/i2clcden.html
 * 
 * Sensor Values
 * Dry: (520 - 430]
 * Wet: (430  - 350]
 * Water: (350  - 260]
 * 
 * 
*/

//-- Libraries --------------------------------------------------------------------------
#include 
#include 

//-- Define pin setup -------------------------------------------------------------------
int outNotify01 = 13; // output of buzzer and LED

int driveOutput01 = 2; //Water Pump Swicth Output pin
int driveOutput02 = 3;
int driveOutput03 = 4;
int driveOutput04 = 5;


//-- Global addresses -------------------------------------------------------------------
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);


//-- Global Variables -------------------------------------------------------------------
int debugCount = 0;
int intSensorCount = 4;
const int intNeedWaterLevel = 430;
const int intSensorCheckCount = 9;

void setup() {

  pinMode(outNotify01, OUTPUT);
  
  pinMode(driveOutput01, OUTPUT);digitalWrite(driveOutput01, HIGH );
  pinMode(driveOutput02, OUTPUT);digitalWrite(driveOutput02, HIGH );
  pinMode(driveOutput03, OUTPUT);digitalWrite(driveOutput03, HIGH );
  pinMode(driveOutput04, OUTPUT);digitalWrite(driveOutput04, HIGH );

  lcd.begin(16,2);   // iInit the LCD for 16 chars 2 lines
  lcd.backlight();   // Turn on display, lcd.noBaklight() to turn off
  
}

void loop() {

 int sensorVal01 = 0;
 int sensorVal02 = 0;
 int sensorVal03 = 0;
 int sensorVal04 = 0;
  
 for (int i = 0; i < intSensorCheckCount; i++) {

  sensorVal01 = analogRead(A0); // define analog pin locations

  lcd.setCursor(0, 0);
  lcd.print("SENSOR 01: " + String(sensorVal01) + "." + String(i));

  if(sensorVal01 >= intNeedWaterLevel){

       lcd.setCursor(0, 1);
       lcd.print("I need water");

       digitalWrite(outNotify01, HIGH);delay(100);digitalWrite(outNotify01, LOW);
       digitalWrite(driveOutput01, LOW );
    
  } else {

      // turn off LED and buzzer ----------
      digitalWrite(outNotify01, LOW);

      // display status -------------------
      lcd.setCursor(0, 1);
      lcd.print("I am happy :)");

      // turn off pump --------------------
      digitalWrite(driveOutput01, HIGH );

      // small delay, break out of loop ---
      delay(2000);
      break;
    
   }

  // delay until next check
  delay(1500);

 }

 subDoSensorDelay();

 for (int i = 0; i < intSensorCheckCount; i++) {

  sensorVal02 = analogRead(A1);

  lcd.setCursor(0, 0);
  lcd.print("SENSOR 02: " + String(sensorVal02) + "." + String(i));

  if(sensorVal02 >= intNeedWaterLevel){

       lcd.setCursor(0, 1);
       lcd.print("I need water");

       digitalWrite(outNotify01, HIGH);delay(100);digitalWrite(outNotify01, LOW);
       digitalWrite(driveOutput02, LOW );
    
  } else {

      digitalWrite(outNotify01, LOW);
      
      lcd.setCursor(0, 1);
      lcd.print("I am happy :)");

      digitalWrite(driveOutput02, HIGH );

      delay(2000);
      break;
    
   }

  delay(1500);

 }

 subDoSensorDelay();

 for (int i = 0; i < intSensorCheckCount; i++) {

  sensorVal03 = analogRead(A2);

  lcd.setCursor(0, 0);
  lcd.print("SENSOR 03: " + String(sensorVal03) + "." + String(i));

  if(sensorVal03 >= intNeedWaterLevel){

       lcd.setCursor(0, 1);
       lcd.print("I need water");

       digitalWrite(outNotify01, HIGH);delay(100);digitalWrite(outNotify01, LOW);
       digitalWrite(driveOutput03, LOW );
    
  } else {

      digitalWrite(outNotify01, LOW);
      
      lcd.setCursor(0, 1);
      lcd.print("I am happy :)");

      digitalWrite(driveOutput03, HIGH );

      delay(2000);
      break;
    
   }

  delay(1500);

 }

 subDoSensorDelay();

 for (int i = 0; i < intSensorCheckCount; i++) {

  sensorVal04 = analogRead(A3);

  lcd.setCursor(0, 0);
  lcd.print("SENSOR 04: " + String(sensorVal04) + "." + String(i));

  if(sensorVal04 >= intNeedWaterLevel){

       lcd.setCursor(0, 1);
       lcd.print("I need water");

       digitalWrite(outNotify01, HIGH);delay(100);digitalWrite(outNotify01, LOW);
       digitalWrite(driveOutput04, LOW );
    
  } else {

      digitalWrite(outNotify01, LOW);
      
      lcd.setCursor(0, 1);
      lcd.print("I am happy :)");

      digitalWrite(driveOutput04, HIGH );

      delay(2000);
      break;
    
   }

  delay(1500);

 }


 // final delay before looping again
 subDoSensorDelay();


}



//-- Helper Functions ----------------------------------------------------------------------

void subDoSensorDelay(){

 digitalWrite(driveOutput01, HIGH );
 digitalWrite(driveOutput02, HIGH );
 digitalWrite(driveOutput03, HIGH );
 digitalWrite(driveOutput04, HIGH );

 lcd.clear();
 delay(3000);

}

void subDoExit(){

  lcd.clear(); // clear display
  lcd.noBacklight(); // turn off display

}