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