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/** \file
 *  \brief  Definitions and Prototypes for Physical Layer Interface of SHA204 Library
 *  \author Atmel Crypto Products
 *  \date 	September 30, 2010
 */
#ifndef SHA204_PHYSICAL_H
#define SHA204_PHYSICAL_H

#include <stdint.h>                                  // data type definitions

#include "sha204_config.h"                           // configuration values

#define SHA204_RSP_SIZE_MIN          ((uint8_t)  4)  //!< minimum number of bytes in response
#define SHA204_RSP_SIZE_MAX          ((uint8_t) 35)  //!< maximum size of response packet

#define SHA204_BUFFER_POS_COUNT      (0)             //!< buffer index of count byte in command or response
#define SHA204_BUFFER_POS_DATA       (1)             //!< buffer index of data in response

//! width of Wakeup pulse in 10 us units
#define SHA204_WAKEUP_PULSE_WIDTH    (uint8_t) (6.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5)

//! delay between Wakeup pulse and communication in ms
#define SHA204_WAKEUP_DELAY          (uint8_t) (3.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5)


uint8_t sha204p_send_command(int fd,uint8_t count, uint8_t *command);
uint8_t sha204p_receive_response(int fd,uint8_t size, uint8_t *response);
void    sha204p_init(void);
void    sha204p_set_device_id(uint8_t id);
uint8_t sha204p_wakeup(int fd);
uint8_t sha204p_idle(int fd);
uint8_t sha204p_sleep(int fd);
uint8_t sha204p_reset_io(int fd);
uint8_t sha204p_resync(int fd,uint8_t size, uint8_t *response);


#endif