title: Arduino interrupts functions
body: <p>I want to call some functions at the rising edge and falling edge of a square wave pulses. I used  attachInterrupt(digitalPinToInterrupt(interruptPin), udara, RISING) for rising edge and  attachInterrupt(digitalPinToInterrupt(interruptPin), blank,FALLING) for falling edge. But I didn`t get the serial outputs of rise and fall conservatively. what is the answer for the problem? My code is written as follows.</p>
  
  <pre><code>enter code here
  const byte interruptPin = 2;
  
  void setup() {
      Serial.begin(9600);
      pinMode(interruptPin, INPUT);
  
  }
  
  void loop() {
      attachInterrupt(digitalPinToInterrupt(interruptPin), udara, RISING);
      attachInterrupt(digitalPinToInterrupt(interruptPin), blank, FALLING);
  }
  
  void udara() {
      Serial.println("rise");
  
  }`
  
  void blank() {
      Serial.println("fall");
  }
  </code></pre>