read & write EEPROM ?

Using Arduino Programming Questions
#1

Hi guys, I'm a new member. I get some problem with EEPROM 's arduino 328. Here is my code

void setMin(){                        
  lcd.setCursor(0,0);
  lcd.print("Gioi han Nhiet");
       lcd.setCursor(0,1); lcd.print("Min: ");
       lcd.setCursor(5,1); lcd.print(Min);
       lcd.setCursor(11,1); lcd.print((char)223);
       lcd.setCursor(12,1); lcd.print("C");
        
        if (up.isUniquePress()) {
         Min = Min + 5;
         lcd.setCursor(5,1); lcd.print(Min);      
          }
        else if (down.isUniquePress()) {
         Min = Min - 5;
         lcd.setCursor(5,1); lcd.print(Min);      
          }   
}

void setMax(){                           
   lcd.setCursor(0,0);
   lcd.print("Gioi han Nhiet");
       lcd.setCursor(0,1); lcd.print("Max: ");
       lcd.setCursor(5,1); lcd.print(Max);
       lcd.setCursor(11,1); lcd.print((char)223);
       lcd.setCursor(12,1); lcd.print("C");
      if (up.isUniquePress()) {
      Max = Max + 5;
      lcd.setCursor(5,1); lcd.print(Max);      
    }
      else if (down.isUniquePress()) {
      Max = Max - 5;
      lcd.setCursor(5,1); lcd.print(Max);      
    }
}

I want to write ,read Min Max value to EEPROM and show it on LCD. Somebody help me write code. pls

#2

Have you seen this and this?

#3

Or this?

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Auto Format
This formats your code nicely: i.e. indents it so that opening and closing curly braces line up, and that the statements inside curly braces are indented more.

EEPROM has limited writes. 100,000 writes is a lot but only if you control time between writes.

There is likely different code examples available with different EEPROM use strategies. I have not used EEPROM but I have seen forum threads about it.

I use SD card for storage. You can even make your own SD to Arduino adapter.

#4