external interrupt program

Projects Programming
1

Hi Guys im a new arduino user,I d like to do a project with external interrupt.
This project should turn on 2 leds, one in digital port 13, and another in digital port 12, with press the interrupt extern 0 to led 13 or press interrupt extern 1 to led 12.

Look my code:

strange
const int botaoverde = 0;
const int botaoamarelo = 1; 
const int led1 =  13;      
const int led2 = 12;


volatile int flag1 = LOW;
volatile int flag2 = LOW;

void setup(){
   pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  attachInterrupt(botaoverde, tratador1, CHANGE);
  attachInterrupt(botaoamarelo, tratador2, CHANGE); 
}

void loop(){
  
  
  digitalWrite(led1,flag1);
  digitalWrite(led2,flag2);
}

void tratador1(){
  flag1= !flag1;
  
}

void tratador2(){
  flag2= !flag2;
  
}

look my "circuit"

i have a strange error or bug. when i turn on my arduino with the code the leds turn on, turn off, i dont know why this occur.
if i touth on anywhere the interrupt are a thrown!!!!

help me plz

arduino.bmp (321 KB)

2

Have a look for "floating pins" here on the forum or over at the tutorials.
Put some resistors on those LEDs before you damage something.

3

tnks man i will do it!