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/*
* \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
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