/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2014, 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 | |
* 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. | |
* ---------------------------------------------------------------------------- | |
*/ | |
/** | |
* \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_ */ |