Arduino LED Dimmer , TV Remote Controll,  Saving  EEPROM

The code to control LED brightness should always get its value by reading it from EEPROM.

The code to receive remote control data should only write the received data to EEPROM.

There are lots of examples of reading and writing EEPROM including on the arduino site:

https://www.arduino.cc/en/Reference/EEPROM

to write to EEPROM:

EEPROM.put(eeAddress, f);

to read from EEPROM:

EEPROM.get(eeAddress, customVar);

Thanks for Reply ;

I read all possible information online. But I am not expert , therefore I did not find good solution. I tried that code, that ist not perfect, but its work. I need better code for that. please help me for it.

In start LED brightness is good as saved in EEPROM. But I can not controll properly with remote at start. I press remote button one time, that Its work. Secondly the button ( to increase brightnes) increase light at first press at 255.

my Code

#include <EEPROM.h>

#include <IRremote.h>

int bright;

int before;

int out=9; //connect your LED to pin 9

int steps=10; //dimmer steps, vary those to increase/decrease the steps between full brightness and turned off

int RECV_PIN = 11; //data out of IR receiver connects to pin 11

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup(){

  irrecv.enableIRIn(); // start the receiver

  before=5; //LED is turned off

  bright=255; //brightness value is at maximum (255)

  if( EEPROM.read(0)>0){

    analogWrite(out,EEPROM.read(0));

  }

  pinMode(out,OUTPUT);

  Serial.begin(9600);

}

void loop() {

  if (irrecv.decode(&results)) {

  if (results.value==0x2FDB847 && before>0 ){ //Code to decrease the brightness

        if(bright-255/steps<0){

      analogWrite(out,bright);

    }

    else{

    bright=bright-255/steps;

    analogWrite(out,bright);

    delay(50);

     EEPROM.write(0, bright);

    Serial.println(bright);

  }}

  if (results.value==0x2FD9867 ){ //Code to increase the brightness

       if(bright+255/steps>255){

      analogWrite(out,bright);

    }

    else{   

    bright=bright+255/steps;

    analogWrite(out,bright);

    delay(50);

     EEPROM.write(0, bright);

    Serial.println(bright);

  }}

  irrecv.resume();

}}

If I am reading this correctly, in the main loop, right after the decode line, you should write the results.value to EEPROM.

That is the only time you need to write to EEPROM.

The "if" statements to test whether to increase or decrease brightness should not look at the results.value - they should test the value that was stored in EEPROM.

On start up, the EEPROM value should be used to set brightness before the main loop.

If I am reading this correctly, in the main loop, right after the decode line, you should write the results.value to EEPROM.

That is the only time you need to write to EEPROM.

The "if" statements to test whether to increase or decrease brightness should not look at the results.value - they should test the value that was stored in EEPROM.

On start up, the EEPROM value should be used to set brightness before the main loop.