AMiRo-OS

#ifndef AI2CMULTIPLEXER

#define AI2CMULTIPLEXER

#include <ch.hpp>

#include <hal.h>

#include <amiro/bus/i2c/I2CDriver.hpp>

/**

 * @brief   AMiRo

 */

namespace amiro {

  /**

   * @brief   I²C Bus Multiplexer

   */

  class I2CMultiplexer {

  public:

    I2CMultiplexer(I2CDriver *driver);

    virtual ~I2CMultiplexer() = 0;

    virtual i2cflags_t getErrors();

    virtual msg_t masterTransmit(const I2CTxParams *params, systime_t timeout = TIME_INFINITE);

    virtual msg_t masterReceive(const I2CRxParams *params, systime_t timeout = TIME_INFINITE);

    virtual void acquireBus();

    virtual void releaseBus();

    virtual msg_t select(const uint8_t bus_id) = 0;

    virtual msg_t deselect() = 0;

  private:

    I2CDriver *driver;

#if I2C_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)

#if CH_USE_MUTEXES || defined(__DOXYGEN__)

    /**

    * @brief   Mutex protecting the bus.

    */

    ::Mutex                     mutex;

#elif CH_USE_SEMAPHORES

    ::Semaphore                 semaphore;

#endif

#endif /* I2C_USE_MUTUAL_EXCLUSION */

  };

} /* amiro */

#endif /* AI2CMULTIPLEXER */