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/**
* \file
* \brief ATCA Hardware abstraction layer for SAMD21 I2C over START drivers.
*
* Prerequisite: add SERCOM I2C Master Polled support 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_SAMD21_I2C_START_H_
#define HAL_SAMD21_I2C_START_H_
#include "atmel_start.h"
#include <stdlib.h>
/** \defgroup hal_ Hardware abstraction layer (hal_)
*
* \brief
* These methods define the hardware abstraction layer for communicating with a CryptoAuth device
*
@{ */
#define MAX_I2C_BUSES 6 // SAMD21 has up to 6 SERCOMS that can be configured as I2C
/** \brief this is the hal_data for ATCA HAL for Atmel START SERCOM
*/
typedef struct atcaI2Cmaster
{
struct i2c_m_sync_desc i2c_master_instance;
uint32_t sercom_core_freq;
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_SAMD21_I2C_START_H_ */