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/**
* \file
* \brief ATCA Hardware abstraction layer for SAM4S I2C over ASF drivers.
*
* Prerequisite: add "TWI - Two-Wire Interface (Common API) (service)" module to application in Atmel Studio
*
* \copyright (c) 2015-2020 Microchip Technology Inc. and its subsidiaries.
*
* \page License
*
* Subject to your compliance with these terms, you may use Microchip software
* and any derivatives exclusively with Microchip products. It is your
* responsibility to comply with third party license terms applicable to your
* use of third party software (including open source software) that may
* accompany Microchip software.
*
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
* EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED
* WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A
* PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT,
* SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE
* OF ANY KIND WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF
* MICROCHIP HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE
* FORESEEABLE. TO THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL
* LIABILITY ON ALL CLAIMS IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED
* THE AMOUNT OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR
* THIS SOFTWARE.
*/
#ifndef HAL_SAM4S_I2C_ASF_H_
#define HAL_SAM4S_I2C_ASF_H_
#include <asf.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 2 // SAM4S has 2 TWI
/**
* \brief this is the hal_data for ATCA HAL
*/
typedef struct atcaI2Cmaster
{
uint32_t twi_id;
Twi * twi_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_SAM4S_I2C_ASF_H_ */