#include <LiquidCrystal.h>
//VARIAVEIS PARA LER A TENSAO
  const int analogPin = A3; // potentiometer wiper (middle terminal) connected to analog pin 3
                    // outside leads to ground and +5V
  int val = 0;  // variable to store the value read
  int led1 = 4;
  int led2 = 5;
  LiquidCrystal lcd(12,11,10,9,8,7);
  const int buttonPin = 13;  // the number of the pushbutton pin
  const int relays = 12; // the number of the LED pin
  int run;
  int relayState = LOW;   // the current state of relay
  int lastButtonState;    // the previous state of button
  int currentButtonState; // the current state of button



void setup() {
  run = 0; //starts stopped
  
  Serial.begin(9600);   //  setup serial
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(relays, OUTPUT);
  lcd.begin(16, 2);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  digitalWrite(relays, LOW);
  currentButtonState = digitalRead(buttonPin);
}

void loop() {
   // read the state of the pushbutton value:
  bool buttonState = digitalRead(buttonPin);
  if(digitalRead(buttonPin) == LOW){ //funcitons based off of button pulling input pin LOW
    lastButtonState    = currentButtonState;      // save the last state
    currentButtonState = digitalRead(buttonPin); // read new state

  if(lastButtonState == HIGH && currentButtonState == LOW) {
    Serial.println("The button is pressed");

    // toggle state of relay
    relayState = !relayState;

    // control relay arccoding to the toggled state
    digitalWrite(relays, relayState); 
  }
  if(currentButtonState == HIGH){
    exit(0);

  }
  

  //LER E ESCREVER A TENSAO
  val = analogRead(analogPin);  // read the input pin
  Serial.println(val);          // debug value


 
 
  //FAZER A LEITURA DA CORRENTE DO CIRCUITO
  unsigned int x=0;
  float AcsValue=0.0,Samples=0.0,AvgAcs=0.0,AcsValueF=0.0;

  for (int x = 0; x < 150; x++){ //Get 150 samples
  AcsValue = analogRead(A0);     //Read current sensor values  
  Samples = Samples + AcsValue;  //Add samples together
  delay (3); // let ADC settle before next sample 3ms
}
AvgAcs=Samples/150.0;//Taking Average of Samples

//((AvgAcs * (5.0 / 1024.0)) is converitng the read voltage in 0-5 volts
//2.5 is offset(I assumed that arduino is working on 5v so the viout at no current comes
//out to be 2.5 which is out offset. If your arduino is working on different voltage than
//you must change the offset according to the input voltage)
//0.185v(185mV) is rise in output voltage when 1A current flows at input
AcsValueF = (2.5 - (AvgAcs * (5.0 / 1024.0)) )/0.185;

Serial.print(AcsValueF);//Print the read current on Serial monitor
Serial.print("ma");
delay(50);



if (AcsValueF>=0 && AcsValueF<=200) {
  lcd. print("Passou no teste\n");
  digitalWrite(led1, HIGH);
  delay(3000);
  digitalWrite(led1, LOW);
  delay(1000);
  lcd.clear();
  
  

 
}
else{
  lcd. print("Nao passou no teste\n");
  digitalWrite(led2, HIGH);
  delay(3000);
  digitalWrite(led2, LOW);
  delay(1000);
  lcd.clear();

} //code you only run if button was pressed, stops running when button pressed again, so forth...
   }
}