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/* Atmel Microcontroller Software Support */
/* SAM Software Package License */
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/* Copyright (c) 2015, Atmel Corporation */
/* */
/* All rights reserved. */
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/* this list of conditions and the disclaimer below. */
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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 _DAC_DMA_
#define _DAC_DMA_
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "chip.h"
#include <stdint.h>
#include <assert.h>
#ifdef __cplusplus
extern "C" {
#endif
/*----------------------------------------------------------------------------
* Types
*----------------------------------------------------------------------------*/
/** DAC transfer complete callback. */
typedef void (*DacCallback)(uint8_t, void *);
/** \brief Dac Transfer Request prepared by the application upper layer.
*
* This structure is sent to the DAC_SendCommand function to start the transfer.
* At the end of the transfer, the callback is invoked by the interrupt handler.
*/
typedef struct {
/** Pointer to the Tx data. */
uint8_t *pTxBuff;
/** Tx size in bytes. */
uint16_t TxSize;
/** Tx loop back. */
uint16_t loopback;
/** DACC channel*/
uint8_t dacChannel;
/** Callback function invoked at the end of transfer. */
DacCallback callback;
/** Callback arguments. */
void *pArgument;
} DacCmd;
/** Constant structure associated with DAC port. This structure prevents
client applications to have access in the same time. */
typedef struct {
/** Pointer to DAC Hardware registers */
Dacc *pDacHw;
/** Current SpiCommand being processed */
DacCmd *pCurrentCommand;
/** Pointer to DMA driver */
sXdmad *pXdmad;
/** DACC Id as defined in the product datasheet */
uint8_t dacId;
/** Mutual exclusion semaphore. */
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_ */
