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152 lines
5.3 KiB
C
152 lines
5.3 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 (ACC) peripheral.
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*
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* \section Usage
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*
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* -# Configurate the pins for ACC
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* -# Initialize the ACC with ACC_Initialize().
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* -# Select the active channel using ACC_EnableChannel()
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* -# Start the conversion with ACC_StartConversion()
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* -# Wait the end of the conversion by polling status with ACC_GetStatus()
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* -# Finally, get the converted data using ACC_GetConvertedData()
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*
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*/
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#ifndef _ACC_
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#define _ACC_
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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 ACC_SELPLUS_AD12B0 0
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#define ACC_SELPLUS_AD12B1 1
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#define ACC_SELPLUS_AD12B2 2
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#define ACC_SELPLUS_AD12B3 3
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#define ACC_SELPLUS_AD12B4 4
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#define ACC_SELPLUS_AD12B5 5
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#define ACC_SELPLUS_AD12B6 6
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#define ACC_SELPLUS_AD12B7 7
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#define ACC_SELMINUS_TS 0
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#define ACC_SELMINUS_ADVREF 1
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#define ACC_SELMINUS_DAC0 2
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#define ACC_SELMINUS_DAC1 3
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#define ACC_SELMINUS_AD12B0 4
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#define ACC_SELMINUS_AD12B1 5
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#define ACC_SELMINUS_AD12B2 6
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#define ACC_SELMINUS_AD12B3 7
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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 ACC_CfgModeReg(pAcc, mode) { \
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(pAcc)->ACC_MR = (mode);\
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}
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#define ACC_GetModeReg( pAcc ) ((pAcc)->ACC_MR)
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#define ACC_StartConversion( pAcc ) ((pAcc)->ACC_CR = ACC_CR_START)
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#define ACC_SoftReset( pAcc ) ((pAcc)->ACC_CR = ACC_CR_SWRST)
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#define ACC_EnableChannel( pAcc, dwChannel ) {\
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assert( dwChannel < 16 ) ;\
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(pAcc)->ACC_CHER = (1 << (dwChannel));\
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}
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#define ACC_DisableChannel( pAcc, dwChannel ) {\
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assert( dwChannel < 16 ) ;\
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(pAcc)->ACC_CHDR = (1 << (dwChannel));\
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}
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#define ACC_EnableIt( pAcc, dwMode ) {\
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assert( ((dwMode)&0xFFF00000)== 0 ) ;\
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(pAcc)->ACC_IER = (dwMode);\
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}
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#define ACC_DisableIt( pAcc, dwMode ) {\
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assert( ((dwMode)&0xFFF00000)== 0 ) ;\
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(pAcc)->ACC_IDR = (dwMode);\
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}
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#define ACC_EnableDataReadyIt( pAcc ) ((pAcc)->ACC_IER = AT91C_ACC_DRDY)
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#define ACC_GetStatus( pAcc ) ((pAcc)->ACC_ISR)
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#define ACC_GetChannelStatus( pAcc ) ((pAcc)->ACC_CHSR)
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#define ACC_GetInterruptMaskStatus( pAcc ) ((pAcc)->ACC_IMR)
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#define ACC_GetLastConvertedData( pAcc ) ((pAcc)->ACC_LCDR)
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#define ACC_CfgAnalogCtrlReg( pAcc, dwMode ) {\
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assert( ((dwMode) & 0xFFFCFF3C) == 0 ) ;\
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(pAcc)->ACC_ACR = (dwMode);\
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}
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#define ACC_CfgExtModeReg( pAcc, extmode ) {\
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assert( ((extmode) & 0xFF00FFFE) == 0 ) ;\
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(pAcc)->ACC_EMR = (extmode);\
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}
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#define ACC_GetAnalogCtrlReg( pAcc ) ((pAcc)->ACC_ACR)
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/*------------------------------------------------------------------------------
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* Exported functions
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*------------------------------------------------------------------------------*/
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extern void ACC_Configure( Acc *pAcc, uint8_t idAcc, uint8_t ucSelplus, uint8_t ucSelminus,
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uint16_t wAc_en, uint16_t wEdge, uint16_t wInvert ) ;
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extern void ACC_SetComparisionPair( Acc *pAcc, uint8_t ucSelplus, uint8_t ucSelminus ) ;
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extern uint32_t ACC_GetComparisionResult( Acc* pAcc, uint32_t dwStatus ) ;
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#ifdef __cplusplus
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}
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#endif
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#endif /* #ifndef _ACC_ */
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