#ifndef __persist
#define __persist
#include <stdint.h>
#include <string.h>


#define PersistIdentifier 0x42
#define PersistVersion1 1


struct PersistHeader
{
  uint8_t identifier;
  uint8_t version;
};


#define PersistHeightsAddress sizeof(PersistHeader)
struct PersistHeights
{
  uint8_t offset;
  uint16_t setting[2];
};



class Persist
{
  public:
    Persist()
    {
      memset(&this->heights, 0, sizeof(PersistHeights));
    }

    bool init();

    // How many centimeters up the reflective surface is from the ground
    uint8_t getHeightOffset() { return this->heights.offset; }
    void setHeightOffset(uint8_t newValue);


  private:
    void readHeights();
    void writeHeights();

    PersistHeights heights;
};

#endif