/* ----------------------------------------------------------------------------
 *         SAM Software Package License
 * ----------------------------------------------------------------------------
 * Copyright (c) 2011, Atmel Corporation
 *
 * 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 disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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 */

/**
 *  \file
 *
 *  \section Purpose
 *
 *  Interface for configuration the Analog-to-Digital Converter (DACC) peripheral.
 *
 *  \section Usage
 *
 *  -# Configurate the pins for DACC
 *  -# Initialize the DACC with DACC_Initialize().
 *  -# Select the active channel using DACC_EnableChannel()
 *  -# Start the conversion with DACC_StartConversion()
 *  -# Wait the end of the conversion by polling status with DACC_GetStatus()
 *  -# Finally, get the converted data using DACC_GetConvertedData()
 *
*/
#ifndef _DACC_
#define _DACC_

/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/
#include "chip.h"

#include <stdint.h>
#include <assert.h>

/*------------------------------------------------------------------------------
 *         Definitions
 *------------------------------------------------------------------------------*/
#define DACC_CHANNEL_0 0
#define DACC_CHANNEL_1 1

#ifdef __cplusplus
 extern "C" {
#endif

/*------------------------------------------------------------------------------
 *         Macros function of register access
 *------------------------------------------------------------------------------*/
#define DACC_CfgModeReg(pDACC, mode)  { \
             (pDACC)->DACC_MR = (mode);\
        }

#define DACC_GetModeReg(pDACC)                ((pDACC)->DACC_MR)

#define DACC_StartConversion(pDACC)           ((pDACC)->DACC_CR = DACC_CR_START)

#define DACC_SoftReset(pDACC)                 ((pDACC)->DACC_CR = DACC_CR_SWRST)

#define DACC_EnableChannel(pDACC, channel)    {\
            (pDACC)->DACC_CHER = (1 << (channel));\
        }

#define DACC_DisableChannel(pDACC, channel)  {\
            (pDACC)->DACC_CHDR = (1 << (channel));\
        }

#define DACC_EnableIt(pDACC, mode)            {\
            assert( ((mode)&0xFFF00000)== 0 ) ;\
            (pDACC)->DACC_IER = (mode);\
        }

#define DACC_DisableIt(pDACC, mode)           {\
            assert( ((mode)&0xFFF00000)== 0 ) ;\
            (pDACC)->DACC_IDR = (mode);\
        }

#define DACC_EnableDataReadyIt(pDACC)         ((pDACC)->DACC_IER = AT91C_DACC_DRDY)

#define DACC_GetStatus(pDACC)                 ((pDACC)->DACC_ISR)

#define DACC_GetChannelStatus(pDACC)          ((pDACC)->DACC_CHSR)

#define DACC_GetInterruptMaskStatus(pDACC)    ((pDACC)->DACC_IMR)

#define DACC_GetLastConvertedData(pDACC)      ((pDACC)->DACC_LCDR)

#define DACC_CfgAnalogCtrlReg(pDACC,mode)     {\
            assert( ((mode) & 0xFFFCFF3C)==0 ) ;\
            (pDACC)->DACC_ACR = (mode);\
        }

#define DACC_CfgExtModeReg(pDACC, extmode)    {\
            assert( ((extmode) & 0xFF00FFFE)==0 ) ;\
            (pDACC)->DACC_EMR = (extmode);\
        }

#define DACC_GetAnalogCtrlReg(pDACC)          ((pDACC)->DACC_ACR)

/*------------------------------------------------------------------------------
 *         Exported functions
 *------------------------------------------------------------------------------*/
extern void DACC_Initialize( Dacc* pDACC,
                     uint8_t idDACC,
                     uint8_t trgEn,
                     uint8_t trgSel,
                     uint8_t word,
                     uint8_t sleepMode,
                     uint32_t mck,
                     uint8_t refresh,/*refresh period*/
                     uint8_t user_sel,/*user channel selection*/
                     uint32_t tag_mode,/*using tag for channel number*/
                     uint32_t startup
                     );


extern void DACC_SetConversionData( Dacc* pDACC, uint32_t dwData ) ;

extern uint32_t DACC_WriteBuffer( Dacc* pDACC, uint16_t* pwBuffer, uint32_t dwSize ) ;

#ifdef __cplusplus
}
#endif

#endif /* #ifndef _DACC_ */