#include <Ultrasonic.h>
#define PIN_PIR           11
#define PIN_MOSFET         4
#define PIN_TRIG          13
#define PIN_ECHO          12  
#define PIN_BUZZER         8
#define PIN_BOTAO          6
#define PIN_LED_VERDE      1
#define PIN_LED_VERMELHO   2
bool BOT, PIR;
float DISTANCIA;
Ultrasonic ULTRA(PIN_TRIG, PIN_ECHO);

void setup() {
  
  pinMode(PIN_PIR, INPUT);
  pinMode(PIN_BUZZER, OUTPUT);
  pinMode(PIN_BOTAO, INPUT);
  pinMode(PIN_LED_VERDE, OUTPUT);
  pinMode(PIN_LED_VERMELHO, OUTPUT);
  pinMode(PIN_MOSFET, OUTPUT);
}

void loop() {
  
  DISTANCIA = ULTRA.read();
  PIR = digitalRead(PIN_PIR);
  BOT = digitalRead(PIN_BOTAO);

  MUDAR_LED();

  if(PIR){
    digitalWrite(PIN_MOSFET, HIGH);
  }else{
    digitalWrite(PIN_MOSFET, LOW);
  }

  if(DISTANCIA < 100){
    digitalWrite(PIN_MOSFET, HIGH);
  }else{
    digitalWrite(PIN_MOSFET, LOW);
  }


}

void MUDAR_LED(){

  if(BOT){
    digitalWrite(PIN_LED_VERDE, LOW);
    digitalWrite(PIN_LED_VERMELHO, HIGH);
  }else{
    digitalWrite(PIN_LED_VERMELHO, LOW);
    digitalWrite(PIN_LED_VERDE, HIGH);
  }

}