#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2


#define LOGO16_GLCD_HEIGHT 16 
#define LOGO16_GLCD_WIDTH  16 
static const unsigned char PROGMEM logo16_glcd_bmp[] =
{ B00000000, B11000000,
  B00000001, B11000000,
  B00000001, B11000000,
  B00000011, B11100000,
  B11110011, B11100000,
  B11111110, B11111000,
  B01111110, B11111111,
  B00110011, B10011111,
  B00011111, B11111100,
  B00001101, B01110000,
  B00011011, B10100000,
  B00111111, B11100000,
  B00111111, B11110000,
  B01111100, B11110000,
  B01110000, B01110000,
  B00000000, B00110000 };

#if (SSD1306_LCDHEIGHT != 32)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif


const int Led = 9;

const int Relay = 4;

const int diffDegree = 3;

long waitTime = 60000;
long TimeRequestMillis; 

char* relaystate = "Close";

bool lock = false;

void setup() {
  Serial.begin(115200);

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // initialize with the I2C addr 0x3C (for the 128x32)
  display.display();
  delay(2000);

  // Clear the buffer.
  display.clearDisplay();
  
  pinMode(Relay, OUTPUT);
  digitalWrite(Relay, LOW);

  TimeRequestMillis = millis();
   }
   

void loop() {

  unsigned long currentMillis = millis();
  
  int valeur_brute = analogRead(A0);

  float temperature_Panneaux = valeur_brute * (5.0 / 1023.0 * 100.0);

  //Serial.println("LM35 : "+temperature_celcius);  *0.63652437

  //Serial.print("Temperature LM35: ");
  //Serial.println(temperature_Panneaux);

  int valeur_brute2 = analogRead(A1);

  float temperature_Boiler = valeur_brute2 * (5.0 / 1023.0 * 100.0);

  //Serial.print("Temperature2 LM35: ");
  //Serial.println(temperature_Boiler);

  if(lock == false){
  
    if((temperature_Panneaux > temperature_Boiler + diffDegree) && (lock == false)){ //mettre plus diff de degré
    digitalWrite(Relay, HIGH);
    relaystate = "Open";
    }
    else{
    digitalWrite(Relay, LOW);
    relaystate = "Close"; 
    }   
    Serial.println("Lock");
    lock = true;
  }

  if(currentMillis - TimeRequestMillis > waitTime){    
    TimeRequestMillis = currentMillis;
    Serial.println("Unlocked !");
    lock = false;
    }

    

  // text display tests
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.print("Panneaux: ");
  display.print(temperature_Panneaux);
  display.println("C");
  display.print("Boiler: ");
  display.print(temperature_Boiler);
  display.println("C");
  display.print("Statut relay : ");
  display.println(relaystate);
  display.display();
  delay(2000); //mettre plus ! ;) 
  display.clearDisplay();
  
}