AMiRo-OS

#ifndef EEPROM_HPP_

#define EEPROM_HPP_

#include <ch.hpp>

#include <hal.h>

#include <amiro/bus/i2c/I2CParams.hpp>

namespace amiro {

class I2CDriver;

class HWSPIDriver;

class EEPROM {

  public:

    /**

     * Base File Stream

     * eepromInit initializes this member.

     */

    BaseFileStream bfs;

    msg_t error;

    fileoffset_t position;

    size_t size;

    uint8_t page_size;

    /**

     * Maximum Write Cycle time

     * Expressed in multiples of 10 µs.

     */

    uint16_t max_t_wr;

    union {

#if HAL_USE_I2C

      struct {

        I2CDriver* i2c_driver;

        I2CTxParams i2c_txparams;

      };

#endif /* HAL_USE_I2C */

#if HAL_USE_SPI

      struct {

        HWSPIDriver* spi_driver;

      };

#endif /* HAL_USE_SPI */

    }; /* union */

#if CH_USE_MUTEXES

    /**

     * Mutex Lock

     */

    Mutex mutex;

#elif CH_USE_SEMAPHORES

    /**

     * Semaphore

     */

    Semaphore semaphore;

#endif

    enum {

      EEPROM_ERROR_NONE = 0x00u,

    };

  protected:

#if HAL_USE_I2C

    EEPROM(const struct BaseFileStreamVMT* vmt, size_t size, uint8_t page_size, uint16_t max_t_wr, uint8_t sla, I2CDriver* i2c_driver);

#endif /* HAL_USE_I2C */

#if HAL_USE_SPI

    EEPROM(const struct BaseFileStreamVMT* vmt, size_t size, uint8_t page_size, uint16_t max_t_wr, HWSPIDriver* spi_driver);

#endif /* HAL_USE_SPI */

    ~EEPROM();

  public:

    void acquire();

    void release();

    static int geterror(void* instance);

    static fileoffset_t getsize(void* instance);

    static fileoffset_t getposition(void* instance);

    static fileoffset_t lseek(void *instance, fileoffset_t offset);

};

} /* amiro */

#endif /* EEPROM_HPP_ */