dac_dma.h

Go to the documentation of this file.

/* ---------------------------------------------------------------------------- */
/*                  Atmel Microcontroller Software Support                      */
/*                       SAM Software Package License                           */
/* ---------------------------------------------------------------------------- */
/* Copyright (c) 2015, Atmel Corporation                                        */
/*                                                                              */
/* All rights reserved.                                                         */
/*                                                                              */
/* Redistribution and use in source and binary forms, with or without           */
/* modification, are permitted provided that the following condition is 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   */
/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE   */
/* 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.                           */
/* ---------------------------------------------------------------------------- */

#ifndef _DAC_DMA_
#define _DAC_DMA_
 
/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/
#include "chip.h"
 
#include <stdint.h>
#include <assert.h>
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
/*----------------------------------------------------------------------------
 *        Types
 *----------------------------------------------------------------------------*/

typedef void (*DacCallback)(uint8_t, void *);

typedef struct {
    uint8_t *pTxBuff;
    uint16_t TxSize;
    uint16_t loopback;
    uint8_t dacChannel;
    DacCallback callback;
    void *pArgument;
} DacCmd;
 

typedef struct {
    Dacc *pDacHw;
    DacCmd *pCurrentCommand;
    sXdmad *pXdmad;
    uint8_t dacId;
    volatile int8_t semaphore;
} DacDma;
 
 
/*------------------------------------------------------------------------------
 *         Definitions
 *------------------------------------------------------------------------------*/
#define DAC_OK          0
#define DAC_ERROR       1
#define DAC_ERROR_LOCK  2
 
#define DACC_CHANNEL_0 0
#define DACC_CHANNEL_1 1
 
/*------------------------------------------------------------------------------
 *         Exported functions
 *------------------------------------------------------------------------------*/
extern uint32_t Dac_ConfigureDma(DacDma *pDacd ,
                                  Dacc *pDacHw ,
                                  uint8_t DacId,
                                  sXdmad *pXdmad);
extern uint32_t Dac_SendData(DacDma *pDacd, DacCmd *pCommand);
 
 
/*------------------------------------------------------------------------------
 *         Macros function of register access
 *------------------------------------------------------------------------------*/
#define DACC_SoftReset(pDACC)                 ((pDACC)->DACC_CR = DACC_CR_SWRST)
#define DACC_CfgModeReg(pDACC, mode)          { (pDACC)->DACC_MR = (mode); }
#define DACC_GetModeReg(pDACC)                ((pDACC)->DACC_MR)
#define DACC_CfgTrigger(pDACC, mode)          { (pDACC)->DACC_TRIGR = (mode); }
 
#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)            {(pDACC)->DACC_IER = (mode);}
#define DACC_DisableIt(pDACC, mode)           {(pDACC)->DACC_IDR = (mode);}
#define DACC_GetStatus(pDACC)                 ((pDACC)->DACC_ISR)
#define DACC_GetChannelStatus(pDACC)          ((pDACC)->DACC_CHSR)
#define DACC_GetInterruptMaskStatus(pDACC)    ((pDACC)->DACC_IMR)
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* #ifndef _DAC_DMA_ */