#pragma once
//
//    FILE: FRAM.h
//  AUTHOR: Rob Tillaart
// VERSION: 0.3.2
//    DATE: 2018-01-24
// PURPOSE: Arduino library for I2C FRAM
//     URL: https://github.com/RobTillaart/FRAM_I2C
//


#include "Arduino.h"
#include "Wire.h"


#define FRAM_LIB_VERSION              (F("0.3.2"))


#define FRAM_OK                       0
#define FRAM_ERROR_ADDR               -10
#define FRAM_ERROR_I2C                -11
#define FRAM_ERROR_CONNECT            -12


class FRAM
{
public:
  FRAM(TwoWire *wire = &Wire);

#if defined (ESP8266) || defined(ESP32)
  // address and writeProtectPin is optional
  int      begin(uint8_t sda, uint8_t scl, const uint8_t address = 0x50, int8_t writeProtectPin = -1);
#endif
  // address and writeProtectPin is optional
  int      begin(const uint8_t address = 0x50, int8_t writeProtectPin = -1);
  bool     isConnected();

  void     write8(uint16_t memaddr, uint8_t value);
  void     write16(uint16_t memaddr, uint16_t value);
  void     write32(uint16_t memaddr, uint32_t value);
  void     write(uint16_t memaddr, uint8_t * obj, uint16_t size);

  uint8_t  read8(uint16_t memaddr);
  uint16_t read16(uint16_t memaddr);
  uint32_t read32(uint16_t memaddr);
  void     read(uint16_t memaddr, uint8_t * obj, uint16_t size);

  bool     setWriteProtect(bool b);
  bool     getWriteProtect();

  uint16_t getManufacturerID();
  uint16_t getProductID();
  uint16_t getSize();

private:
  uint8_t  _address;
  int8_t   _writeProtectPin = -1;  // default no pin ==> no write protect.

  uint16_t getMetaData(uint8_t id);
  void     writeBlock(uint16_t memaddr, uint8_t * obj, uint8_t size);
  void     readBlock(uint16_t memaddr, uint8_t * obj, uint8_t size);

  TwoWire*  _wire;
};


// -- END OF FILE --