Hi
I am trying to save a 2 variables i and j in EEPROM, I can change those values by buttons, but after disconnecting the power both values are not saved and on LCD I have i=0 and j=0.
Please help me to fix the problem.
#include <LiquidCrystal.h>
#include <EEPROM.h>
LiquidCrystal lcd(PA0, PA1, PA2, PA3, PA4, PA5);
int i;
int ovfi;
int j;
int ovfj;
void setup()
{
pinMode(PB6, INPUT_PULLDOWN);
pinMode(PB9, INPUT_PULLDOWN);
pinMode(PB5, INPUT_PULLDOWN);
pinMode(PB8, INPUT_PULLDOWN);
lcd.begin(16, 2);
EEPROM.read(256);
EEPROM.read(0);
}
void loop()
{
ovfi = 3000 - i;
if (digitalRead(PB8) == HIGH)
{
if (i < 3000)
{
i++;
}
}
if (digitalRead(PB5) == HIGH)
{
if (i > 0)
{
i--;
}
}
EEPROM.write(256, i);
//////////////////////////////////
ovfi = 3000 - j;
if (digitalRead(PB9) == HIGH)
{
if (i < 3000)
{
j++;
}
}
if (digitalRead(PB6) == HIGH)
{
if (i > 0)
{
j--;
}
}
EEPROM.write(0, i);
/////////////////////////////////
lcd.setCursor(0, 0);
lcd.print(EEPROM.read(256));
lcd.setCursor(0, 1);
lcd.print(EEPROM.read(0));
}