Question about EEPROM [SOLVED]

[Xavier Lopez]

Dear Fernando, I apologize for the basics of this question but after reading and rereading several pages about the EEPROM and the pointers I do not quite understand a part of your code.
In the following piece of code:

Code: Select all

void SaveLEDToEEPROM()
{
  byte k = 222;
  EEPROM.write(796, k);         // Salva ponteiro para os LEDs na EEPROM
  for (int i = 1; i < 97; i++)
  {
    EEPROM.write(i, wled[i - 1]);
    EEPROM.write(i + 96, bled[i - 1]);
    EEPROM.write(i + (96 * 2), rbled[i - 1]);
    EEPROM.write(i + (96 * 3), rled[i - 1]);
    EEPROM.write(i + (96 * 4), uvled[i - 1]);
  }
  SalvarCanalExtraEEPROM();
}

void SaveTempToEEPROM()
{
  byte k = 66;
  EEPROM.write(693, k);
  tempSettings.tempset = int(setTempC * 10);
  tempSettings.tempoff = int(offTempC * 10);
  tempSettings.tempalarm = int(alarmTempC * 10);
  EEPROM_writeAnything(482, tempSettings);
}

void SalvartpaEEPROM()
{
  EEPROM.write(488, hora);
  EEPROM.write(489, minuto);
  EEPROM.write(490, duracaomaximatpa);

  for (byte i = 0; i < 7; i++)
  {
    EEPROM.write((491 + i), semana_e[i]);
  }
}

void SavePHRToEEPROM()
{
  EEPROM.write(508, (setPHR * 10));
  EEPROM.write(509, (offPHR * 10));
  EEPROM.write(510, (alarmPHR * 10));
}

void SaveORPToEEPROM()
{
  byte k = 66;
  EEPROM.write(705, k);
  ORPSettings.ORPset = int(setORP);
  ORPSettings.ORPoff = int(offORP);
  ORPSettings.ORPalarm = int(alarmORP);
  EEPROM_writeAnything(514, ORPSettings);
}

I do not understand why variable "byte" acquires different values, normally it is "66", sometimes it is "222" and sometimes it does not exist.
I just need a brief explanation or a link to some website that gives examples for newbies.
Again my apologies for bothering you with such basic questions. Best regards.

[Fernando Garcia]

Hi!

This are random values that I have selected. It can be any number.

It's to know if configuration of some parameter were saved in EEPROM sometime.

If the value never was saved this default values will be used.

I'm not a monster don't need ask with all this fear.

Best regards.