#include <SPI.h>
#include <Ethernet.h>

byte mac[] = {0xde, 0xde, 0xbe, 0xef, 0xac, 0xed}; 
IPAddress ip(192, 168, 2, 100 );
EthernetServer server =  EthernetServer(1234);


//Declaration des E/S
const int ES13  =  13;
const int BILLE =  22;
const int PIR   =  23;
const int BUZZ  =  8; //PWM OUT
const int TMP   =  0;
const int LUM   =  1;

//declaration et initialisation variable temperature
float mesure = 0;
float tension = 0;
float temperature = 0;
float tmp_max = 0;
float tmp_min = 100;
float luminosite = 0;

int chaine = 0;  
boolean intrus = false;
String state1 = "ALARM OFF";
String state13 = "D13 OFF";
String temp = "0";

void alarme()
{
  analogWrite(BUZZ,255);
  delay(1000);

  analogWrite(BUZZ,200);
  //delay(1000);

}

void setup()   
{ 
  
  Ethernet.begin(mac, ip);
  server.begin();
  
  Serial.begin(19200);
  
  // initialize the LED pin as an output:
  pinMode(ES13, OUTPUT); 
  pinMode(PIR, INPUT);  
  pinMode(BILLE, INPUT); 
  pinMode(BUZZ, OUTPUT);
  
  analogReference(INTERNAL1V1);

} 

void loop()
{ 
  
  Get_Alarme();
  
  Get_lumiere();
  
  WebClient();
  
  //affichage_serial();
  
  delay(1000);
   
} 

void WebClient(void){
 EthernetClient client = server.available();

    
  if (client && client.connected()) {
    affichage_serveur();
   Serial.println("client connected");
    // si le client nous envoie quelque chose
    if (client.available() > 0) {
      chaine = client.read();
      if (chaine == 48)
        chaine = '0';
      else if (chaine == 49)
        chaine = '1';
      else if (chaine == 50)
        chaine = '2';
      else if (chaine == 51)
        chaine = '3';
      Serial.println(chaine);
      // On regarde ce que le client nous demande
      switch(chaine){
      case '0': // allumer la led
        digitalWrite(ES13, HIGH);
        state13 = "D13 ON";
        break;
      case '1': // éteindre la led
        digitalWrite(ES13, LOW);
        state13 = "D13 OFF";
        break;
      case '2': // allumer l'alarme
        state1 = "ALARM ON";
        break;
      case '3': // éteindre l'alarme
        state1 = "ALARM OFF";
        break;
        
      }
    }
    
  }
  client.flush();
  client.stop(); 
  
}

void Get_Alarme(void){
  if(state1 == "ALARM ON" || intrus == true)
  {     
    if(digitalRead(BILLE) == LOW || intrus == true || digitalRead(PIR) == HIGH){
        alarme();
        intrus = true;
    }    
  }
  
  if(state1 == "ALARM OFF") {
      analogWrite(BUZZ,0);
      intrus = false;
  }
}

void Get_lumiere(void){
  luminosite = analogRead(LUM); 
  
  mesure = analogRead(TMP);
  tension = mesure * 1.1 / 1024;
  
  temperature = tension * 100;

}

void affichage_serveur (void){
  server.print("DEBUT ");
  
  server.print(state13);
  server.print(" ");
  server.print(state1);
  server.print(" TEMPERATURE ");
  server.print(temperature);
  server.print(" INTRUSION ");
  server.print(intrus);
  server.print(" LUMINOSITE ");
  server.print(luminosite);
  
  server.println(" FIN");
}

void affichage_serial (void){
  Serial.print("DEBUT ");
  
  Serial.print(state13);
  Serial.print(" "); 
  Serial.print(state1);
  Serial.print(" TEMPERATURE "); 
  Serial.print(temperature);
  Serial.print(" INTRUSION "); 
  Serial.print(intrus);
  Serial.print(" LUMINOSITE "); 
  Serial.print(luminosite);
  
  Serial.println(" FIN");
  Serial.flush();
}