/**
 * \file
 * \brief ATCA Hardware abstraction layer for XMEGA-A3BU I2C over ASF drivers.
 *
 * Prerequisite: add I2C Master Polled support to application in Atmel Studio
 *
 * \copyright (c) 2015-2020 Microchip Technology Inc. and its subsidiaries.
 *
 * \page License
 *
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 * and any derivatives exclusively with Microchip products. It is your
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 * accompany Microchip software.
 *
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 * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED
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 */

#ifndef HAL_XMEGA_A3BU_I2C_ASF_H_
#define HAL_XMEGA_A3BU_I2C_ASF_H_

#include <asf.h>
#include "twi_master.h"

/** \defgroup hal_ Hardware abstraction layer (hal_)
 *
 * \brief
 * These methods define the hardware abstraction layer for communicating with a CryptoAuth device
 * using I2C driver of ASF.
 *
   @{ */


#define MAX_I2C_BUSES    4   // XMEGA A3BU has up to 4 PORT that can be configured as I2C

/** \brief this is the hal_data for ATCA HAL created using ASF
 */
typedef struct atcaI2Cmaster
{
    twi_master_t i2c_master_instance;
    int          ref_ct;
    // for conveniences during interface release phase
    int bus_index;
} ATCAI2CMaster_t;

void change_i2c_speed(ATCAIface iface, uint32_t speed);

/** @} */
#endif /* HAL_XMEGA_A3BU_I2C_ASF_H_ */