/**************************************************************************//**
*   @file   AD5570.c
*   @brief  Implementation of AD5570 Driver for Microblaze processor.
*   @author Istvan Csomortani (istvan.csomortani@analog.com)
*
*******************************************************************************
* Copyright 2011(c) Analog Devices, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*  - Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*  - 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.
*  - Neither the name of Analog Devices, Inc. nor the names of its
*    contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*  - The use of this software may or may not infringe the patent rights
*    of one or more patent holders.  This license does not release you
*    from the requirement that you obtain separate licenses from these
*    patent holders to use this software.
*  - Use of the software either in source or binary form, must be run
*    on or directly connected to an Analog Devices Inc. component.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* INTELLECTUAL PROPERTY RIGHTS, 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.
*
*******************************************************************************
*   SVN Revision: $WCREV$
******************************************************************************/

/*****************************************************************************/
/* Include Files                                                             */
/*****************************************************************************/
#include "AD5570.h"
#include "Communication.h"
#include "Console.h"

/**************************************************************************//**
 * @brief Initialize SPI and Initial Values for AD5570 Board.
 *
 * @param None.
 *
 * @return retValue - Result of the initialization.
 *                    Example: 0 - if initialization was successful;
 *                            -1 - if initialization was unsuccessful.
******************************************************************************/
int AD5570_Init(void)
{
    char status = -1;

    /* Initialize the SPI interface */
    status = SPI_Init(0, 1000000, 0, 0);

    /* Initialize the LDAC GPIO pin */
    AD5570_PD_OUT;
    AD5570_PD_HIGH;
    AD5570_CLR_OUT;
    AD5570_CLR_HIGH;
    AD5570_LDAC_OUT;
    AD5570_LDAC_LOW;

    return status;
}

/***************************************************************************//*
 * @brief Set the shift register of the DAC with the given value
 *
 * @param The value which will be written to the shift register
 *
 * @return None
******************************************************************************/
void AD5570_SetRegister(unsigned short data)
{
    unsigned char buff[2] = { 0,0 };

    buff[1] = data & 0xFF;
    buff[0] = (data & 0xFF00) >> 8;
    SPI_Write(AD5570_SLAVE_ID, buff, 2);
}
