/*****************************************************************************
 *
 * \file
 *
 * \brief TWI Master driver for AVR UC3.
 *
 * This file defines a useful set of functions for the TWIM interface on AVR UC3
 * devices.
 *
 * Copyright (c) 2009-2012 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
 *
 ******************************************************************************/


#ifndef _TWI_MASTER_H_
#define _TWI_MASTER_H_

#include "compiler.h"
#include "sysclk.h"
#include "status_codes.h"
#include "twim.h"

typedef volatile avr32_twi_t *twi_master_t;
typedef twi_options_t twi_master_options_t;

static inline int twi_master_setup(twi_master_t twi, twi_master_options_t *opt)
{
  int status;
  opt->pba_hz = sysclk_get_pba_hz();
#if UC3D
    sysclk_enable_pba_module(SYSCLK_TWIM);
#else
    if ((uint32_t)twi == AVR32_TWIM0_ADDRESS) {
        sysclk_enable_pba_module(SYSCLK_TWIM0);
    } else if ((uint32_t)twi == AVR32_TWIM1_ADDRESS) {
        sysclk_enable_pba_module(SYSCLK_TWIM1);
    }
#endif
  status = twi_master_init(twi, (const twi_master_options_t *)opt);
  return(status);
}

#endif  // _TWI_MASTER_H_
