/*
 * \file
 *
 * \brief ATSHA204 header file for the communication layer for the device
 *
 *
 * Copyright (c) 2011-2015 Atmel Corporation. All rights reserved.
 *
 * \asf_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 microcontroller product.
 *
 * 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.
 *
 * \asf_license_stop
 *
 */
/*
 * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
 */

#ifndef SHA204_COMM_H
#   define SHA204_COMM_H

#include <compiler.h>               //!< compiler dependent definitions

#include "sha204_physical.h"        //!< declarations that are common to all interface implementations

//! maximum command delay
#define SHA204_COMMAND_EXEC_MAX      (69)

//! minimum number of bytes in command (from count byte to second CRC byte)
#define SHA204_CMD_SIZE_MIN          ((uint8_t)  7)

//! maximum size of command packet (CheckMac)
#define SHA204_CMD_SIZE_MAX          ((uint8_t) 84)

//! number of CRC bytes
#define SHA204_CRC_SIZE              ((uint8_t)  2)

//! buffer index of status byte in status response
#define SHA204_BUFFER_POS_STATUS     (1)

//! buffer index of first data byte in data response
#define SHA204_BUFFER_POS_DATA       (1)

//! status byte after wake-up
#define SHA204_STATUS_BYTE_WAKEUP    ((uint8_t) 0x11)

//! command parse error
#define SHA204_STATUS_BYTE_PARSE     ((uint8_t) 0x03)

//! command execution error
#define SHA204_STATUS_BYTE_EXEC      ((uint8_t) 0x0F)

//! communication error
#define SHA204_STATUS_BYTE_COMM      ((uint8_t) 0xFF)

/** 
 * \brief This structure contains the parameters for the \ref sha204c_send_and_receive function.
 */
struct sha204_send_and_receive_parameters {
	uint8_t *tx_buffer;         //!< pointer to send buffer
	uint8_t rx_size;            //!< size of receive buffer
	uint8_t *rx_buffer;         //!< pointer to receive buffer
	uint8_t poll_delay;         //!< how long to wait before polling for response-ready
	uint8_t poll_timeout;       //!< how long to poll before timing out
};

/**
 * \defgroup sha204_communication_group SHA204 Service - hardware independent communication functions
 * @{
 */
void sha204c_calculate_crc(uint8_t length, uint8_t *data, uint8_t *crc);
uint8_t sha204c_wakeup(uint8_t *response);
uint8_t sha204c_send_and_receive(struct sha204_send_and_receive_parameters *args);
//! @}

#endif