IRremote: Every second value is FFFFFFFF

Projects Programming
1

Colleagues, please tell me the answer to my question!

I read the transmitted codes of several remote controls. Almost always, after real code, the library returns a value FFFFFFFF.

The program is very simple:

#include "IRremote.h"


IRrecv irrecv(2);

decode_results results;

void setup() {
  Serial.begin(9600);
  irrecv.enableIRIn();

}

void loop() {
  if ( irrecv.decode( &results )) {
    Serial.println( results.value, HEX );
    irrecv.resume();
  }

}

What am I doing wrong and where does this FFFFFFFFF value come from?

Ogogon.

2

0xffffffff is the "repeat code" sent when a button is held down.

3

When you hold the button down your IR remote sends the repeat code.

i.e. 0xFFFFFFFFF

4

This is an example of the code that I use when I want to ignore the repeat codes.

#include "IRremote.h"

IRrecv irrecv(2);

decode_results results;

void setup()
{
   Serial.begin(9600);
   irrecv.enableIRIn();
}

void loop()
{
   readIR();
}

void readIR()
{
   if (irrecv.decode( &results ))
   {
      unsigned long IRval = results.value;
      if (IRval == 0xffffffff)
      {
         irrecv.resume();
         return;
      }
      Serial.println( results.value, HEX );
      irrecv.resume();
   }
}