IR with attiny85 do no fit (RESOLVED)

[ea4ejr]

Hello, I am making a very simple project with a IR remote to control one equipment; one key switch on a pin (led) and another key switch off. I have tested this sketch in an arduino mini and its run perfectly. But because it is very simple i want to change it to an attiny85 but project do not fit:

After compiling:

In file included from /home/pedro/Arduino/ir2/ir2/ir2.ino:1:0:
/home/pedro/Arduino/libraries/IRremote/src/IRremote.hpp:281:2: warning: #warning INFO: No definition for LED_BUILTIN found -> default LED feedback is disabled. [-Wcpp]
#warning INFO: No definition for LED_BUILTIN found -> default LED feedback is disabled.
^~~~~~~
Sketch uses 7178 bytes (87%) of program storage space. Maximum is 8192 bytes.
Global variables use 546 bytes (106%) of dynamic memory, leaving -34 bytes for local variables. Maximum is 512 bytes.
Not enough memory; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing your footprint.
data section exceeds available space in board

Compilation error: data section exceeds available space in board

Compilation error: data section exceeds available space in board

I have seen some solutions on internet but I think those are a botch.

This is my code

#include <IRremote.hpp>

const int RECV_PIN = 3;	// Pin de recepción del mando
const int led =4;
//unsigned int recibido; 
byte recibido;

void setup()
{ 
  pinMode(led, OUTPUT);
  pinMode(RECV_PIN, INPUT_PULLUP);

  IrReceiver.begin(RECV_PIN, DISABLE_LED_FEEDBACK);  // Empezamos la recepción  por IR

  digitalWrite(led, HIGH);
      delay(100);
   digitalWrite(led, LOW);

}
void loop()
{ 
  if (IrReceiver.decode()) {          
    recibido=IrReceiver.decodedIRData.command;
    IrReceiver.resume();             

if (recibido==0x45){digitalWrite(led, LOW);}
if (recibido==0x46){digitalWrite(led, HIGH);}
  delay (100);                 
}

You can see practically all memory is used by library.

¿How I can resolve this?

Many thanks.

[apf1979]

Have you Googled or searched the forums already?

I Googled attiny85 IR Library and found this very quickly.

How to Use the IR Library With an Attiny

[ea4ejr]

Yes, I have seen that page, but it is very old and the last comment (one year ago) says:

The current IRremote library was adapted to work with ATtinies out of the box, no need to download http://gammon.com.au/Arduino/IRremote_Attiny.zip any more.
For first testing use the Simple* examples from the library.

Many thanks

[Ballscrewbob]

You may HAVE to revert to an older library of find a smaller one.
The constraints of the ATTINY 85 will always present a challenge to your coding.

A better option would be a similar board but with more memory if you cannot find anything suitable.

[ea4ejr]

I resolved at last the problem.
Library load ALL protocols for IR, so I connect receiver to Arduino mini again and read in serial port the protocol uses the transmitter, in this case it is NEC, so I disabled the rest. The solution is put at the beginin of the file:

#define DECODE_NEC

After compilation only use 276 bytes (54%) of memory.

Many thanks to all answers.