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atca_device.c
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atca_device.c
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/**
* \file
* \brief Atmel CryptoAuth device object
*
* Copyright (c) 2015 Atmel Corporation. All rights reserved.
*
* \atmel_crypto_device_library_license_start
*
* \page License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel integrated circuit.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* \atmel_crypto_device_library_license_stop
*/
#include <stdlib.h>
#include "atca_device.h"
/** \defgroup device ATCADevice (atca_)
* \brief ATCADevice object - composite of command and interface objects
@{ */
/** \brief atca_device is the C object backing ATCADevice. See the atca_device.h file for
* details on the ATCADevice methods
*/
struct atca_device {
ATCACommand mCommands; // has-a command set to support a given CryptoAuth device
ATCAIface mIface; // has-a physical interface
};
/** \brief constructor for an Atmel CryptoAuth device
* \param[in] cfg pointer to an interface configuration object
* \return reference to a new ATCADevice
*/
ATCADevice newATCADevice(ATCAIfaceCfg *cfg )
{
ATCADevice cadev = NULL;
if (cfg == NULL)
return NULL;
cadev = (ATCADevice)malloc(sizeof(struct atca_device));
cadev->mCommands = (ATCACommand)newATCACommand(cfg->devtype);
cadev->mIface = (ATCAIface)newATCAIface(cfg);
if (cadev->mCommands == NULL || cadev->mIface == NULL) {
free(cadev);
cadev = NULL;
}
return cadev;
}
/** \brief returns a reference to the ATCACommand object for the device
* \param[in] dev reference to a device
* \return reference to the ATCACommand object for the device
*/
ATCACommand atGetCommands( ATCADevice dev )
{
return dev->mCommands;
}
/** \brief returns a reference to the ATCAIface interface object for the device
* \param[in] dev reference to a device
* \return reference to the ATCAIface object for the device
*/
ATCAIface atGetIFace( ATCADevice dev )
{
return dev->mIface;
}
/** \brief destructor for a device NULLs reference after object is freed
* \param[in] cadev pointer to a reference to a device
*
*/
void deleteATCADevice( ATCADevice *cadev ) // destructor
{
struct atca_device *dev = *cadev;
if ( *cadev ) {
deleteATCACommand( (ATCACommand*)&(dev->mCommands));
deleteATCAIface((ATCAIface*)&(dev->mIface));
free((void*)*cadev);
}
*cadev = NULL;
}
/** @} */