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147 lines
5.2 KiB
C
147 lines
5.2 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2009, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/**
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* \file
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*
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* \section Purpose
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*
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* Interface for configuration the Analog-to-Digital Converter (DACC) peripheral.
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*
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* \section Usage
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*
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* -# Configurate the pins for DACC
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* -# Initialize the DACC with DACC_Initialize().
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* -# Select the active channel using DACC_EnableChannel()
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* -# Start the conversion with DACC_StartConversion()
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* -# Wait the end of the conversion by polling status with DACC_GetStatus()
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* -# Finally, get the converted data using DACC_GetConvertedData()
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*
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*/
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#ifndef _DACC_
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#define _DACC_
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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#include "../chip.h"
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#include <stdint.h>
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#include <assert.h>
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/*------------------------------------------------------------------------------
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* Definitions
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*------------------------------------------------------------------------------*/
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#define DACC_CHANNEL_0 0
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#define DACC_CHANNEL_1 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*------------------------------------------------------------------------------
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* Macros function of register access
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*------------------------------------------------------------------------------*/
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#define DACC_CfgModeReg(pDACC, mode) { \
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(pDACC)->DACC_MR = (mode);\
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}
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#define DACC_GetModeReg(pDACC) ((pDACC)->DACC_MR)
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#define DACC_StartConversion(pDACC) ((pDACC)->DACC_CR = DACC_CR_START)
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#define DACC_SoftReset(pDACC) ((pDACC)->DACC_CR = DACC_CR_SWRST)
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#define DACC_EnableChannel(pDACC, channel) {\
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(pDACC)->DACC_CHER = (1 << (channel));\
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}
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#define DACC_DisableChannel(pDACC, channel) {\
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(pDACC)->DACC_CHDR = (1 << (channel));\
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}
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#define DACC_EnableIt(pDACC, mode) {\
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assert( ((mode)&0xFFF00000)== 0 ) ;\
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(pDACC)->DACC_IER = (mode);\
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}
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#define DACC_DisableIt(pDACC, mode) {\
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assert( ((mode)&0xFFF00000)== 0 ) ;\
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(pDACC)->DACC_IDR = (mode);\
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}
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#define DACC_EnableDataReadyIt(pDACC) ((pDACC)->DACC_IER = AT91C_DACC_DRDY)
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#define DACC_GetStatus(pDACC) ((pDACC)->DACC_ISR)
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#define DACC_GetChannelStatus(pDACC) ((pDACC)->DACC_CHSR)
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#define DACC_GetInterruptMaskStatus(pDACC) ((pDACC)->DACC_IMR)
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#define DACC_GetLastConvertedData(pDACC) ((pDACC)->DACC_LCDR)
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#define DACC_CfgAnalogCtrlReg(pDACC,mode) {\
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assert( ((mode) & 0xFFFCFF3C)==0 ) ;\
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(pDACC)->DACC_ACR = (mode);\
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}
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#define DACC_CfgExtModeReg(pDACC, extmode) {\
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assert( ((extmode) & 0xFF00FFFE)==0 ) ;\
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(pDACC)->DACC_EMR = (extmode);\
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}
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#define DACC_GetAnalogCtrlReg(pDACC) ((pDACC)->DACC_ACR)
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/*------------------------------------------------------------------------------
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* Exported functions
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*------------------------------------------------------------------------------*/
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extern void DACC_Initialize( Dacc* pDACC,
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uint8_t idDACC,
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uint8_t trgEn,
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uint8_t trgSel,
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uint8_t word,
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uint8_t sleepMode,
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uint32_t mck,
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uint8_t refresh,/*refresh period*/
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uint8_t user_sel,/*user channel selection*/
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uint32_t tag_mode,/*using tag for channel number*/
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uint32_t startup
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);
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extern void DACC_SetConversionData( Dacc* pDACC, uint32_t dwData ) ;
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extern uint32_t DACC_WriteBuffer( Dacc* pDACC, uint16_t* pwBuffer, uint32_t dwSize ) ;
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#ifdef __cplusplus
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}
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#endif
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#endif /* #ifndef _DACC_ */
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