#include "./persist.h"
#include <EEPROM.h>


void Persist::init()
{
  PersistHeader header;
  EEPROM.get(0, header);

  if (header.identifier == PersistIdentifier)
  {
    if (header.version >= 1)
        this->readHeights();

    this->initialized = true;
  }
}


void Persist::readHeights()
{
  EEPROM.get(PersistHeightsAddress, this->heights);
}


void Persist::writeHeights()
{
  EEPROM.put(PersistHeightsAddress, this->heights);
}


void Persist::setHeightOffset(uint8_t newValue)
{
  if (newValue == this->heights.offset)
    return;

  this->heights.offset = newValue;
  this->writeHeights();
}