counter system using eeprom

Using Arduino Storage
#1

Hello, this is a counter system. I try to save the values when the power is out, and I did that using the EEPROM function, but the problem is that it only retains 256 numbers. Can I make it keep more than 3000?
i using arduino uno .

#include <LiquidCrystal.h> 
int Contrast=75;
 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
#include <EEPROM.h> 
int ir_pin=13;
int counter=0;
int hitObject=false;
int pushbutton=13;
int button =0;//reset button
int i=0;
 void setup()
 { pinMode(ir_pin,INPUT);
  
    analogWrite(6,Contrast);
     lcd.begin(16, 2);
     lcd.setCursor(4, 0);
     lcd.print("counter");
     
counter=EEPROM.read(i);  //get the previously saved value from EEPROM address zero    

  } 
     void loop()
 { int val = digitalRead(ir_pin);                                                          
if((val==0)&&(hitObject==false))
 {
  counter++;
  EEPROM.update(i,counter);  //save the new value to EEPROM address zero
  hitObject=true;
lcd.setCursor(7,1);
lcd.print(counter);
lcd.setCursor(7,1);
     
     }
 else if((val==1)&&(hitObject==true))
 {
  hitObject=false;
 }
 if(button==1){
  counter=0;
 }
}
#2

What number do you get when you divide 3000 by 255? what remainder do you get?

#3

missdrew:
What number do you get when you divide 3000 by 255? what remainder do you get?

sry for that iam just beginner why i divide 3000by255?

#4

Use EEPROM.put() and EEPROM.get() to store integer values greater than 255. In the Arduino Uno, an integer is 2 bytes, but each eeprom address can only hold one byte. You will need to store you larger values in 2 eeprom memory locations, and the eeprom library will do that for you with EEPROM.put() and EEPROM.get().

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

#5

(deleted)

#6

iam fine, thanks alot peter i try it

Peter-CAD-HST:
Hello ahmed_sliem
How are you?
The used EEPROM.update() function is limited to the byte datatype.
Try this:

if (counter!=EEPROM.get(address) EEPROM.put(address,counter);

Good luck
br Peter
and stay healthy

#7

thanks

cattledog:
Use EEPROM.put() and EEPROM.get() to store integer values greater than 255. In the Arduino Uno, an integer is 2 bytes, but each eeprom address can only hold one byte. You will need to store you larger values in 2 eeprom memory locations, and the eeprom library will do that for you with EEPROM.put() and EEPROM.get().

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

#8

this my new code it read over 5000 number thats make me happy but itry now to make areset button (as apush button)
to back the value in adress 0 to zero how i make it ?
i try to use the clear funcation but nothing happen

#include <LiquidCrystal.h> 
int Contrast=75;
 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
#include <EEPROM.h> 
int ir_pin=13;
int counter;
int hitObject=false;
int button =8;//reset button
int i=0;
 void setup()
 { pinMode(ir_pin,INPUT);
  pinMode(button,INPUT);
  analogWrite(6,Contrast);
     lcd.begin(16, 2);
     lcd.setCursor(4, 0);
     lcd.print("counter");
     
EEPROM.get(i,counter);  //get the previously saved value from EEPROM address zero    

  } 
     void loop()
     {
  int val = digitalRead(ir_pin);                                                          
if((val==0)&&(hitObject==false))
 {
  counter++;
  EEPROM.put(i,counter);  //save the new value to EEPROM address zero
  hitObject=true;
lcd.setCursor(6,1);
lcd.print(counter);
lcd.setCursor(6,1);
     
     }
 else if((val==1)&&(hitObject==true))
 {
  hitObject=false;
  if (button==1)
  {EEPROM.write(i, 0);
 }
}
}
#9

(deleted)

#10