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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, 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.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
/// \unit
///
/// !Purpose
///
/// Interface for configuration the Analog-to-Digital Converter (ADC) peripheral.
///
/// !Usage
///
/// -# Configurate the pins for ADC
/// -# Initialize the ADC with ADC_Initialize().
/// -# Select the active channel using ADC_EnableChannel()
/// -# Start the conversion with ADC_StartConversion()
// -# Wait the end of the conversion by polling status with ADC_GetStatus()
// -# Finally, get the converted data using ADC_GetConvertedData()
///
//------------------------------------------------------------------------------
#ifndef ADC12_H
#define ADC12_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include <utility/assert.h>
//------------------------------------------------------------------------------
// Definitions
//------------------------------------------------------------------------------
#define ADC12_CHANNEL_0 0
#define ADC12_CHANNEL_1 1
#define ADC12_CHANNEL_2 2
#define ADC12_CHANNEL_3 3
#define ADC12_CHANNEL_4 4
#define ADC12_CHANNEL_5 5
#define ADC12_CHANNEL_6 6
#define ADC12_CHANNEL_7 7
//------------------------------------------------------------------------------
// Macros function of register access
//------------------------------------------------------------------------------
#define ADC12_CfgModeReg(pAdc, mode) { \
ASSERT(((mode)&0xF00000C0)== 0, "ADC Bad configuration ADC MR");\
(pAdc)->ADC12B_MR = (mode);\
}
#define ADC12_GetModeReg(pAdc) ((pAdc)->ADC12B_MR)
#define ADC12_StartConversion(pAdc) ((pAdc)->ADC12B_CR = AT91C_ADC_START)
#define ADC12_SoftReset(pAdc) ((pAdc)->ADC12B_CR = AT91C_ADC_SWRST)
#define ADC12_EnableChannel(pAdc, channel) {\
ASSERT(channel < 8, "ADC Channel not exist");\
(pAdc)->ADC12B_CHER = (1 << (channel));\
}
#define ADC12_DisableChannel (pAdc, channel) {\
ASSERT((channel) < 8, "ADC Channel not exist");\
(pAdc)->ADC12B_CHDR = (1 << (channel));\
}
#define ADC12_EnableIt(pAdc, mode) {\
ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IER");\
(pAdc)->ADC12B_IER = (mode);\
}
#define ADC12_DisableIt(pAdc, mode) {\
ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IDR");\
(pAdc)->ADC12B_IDR = (mode);\
}
#define ADC12_EnableDataReadyIt(pAdc) ((pAdc)->ADC12B_IER = AT91C_ADC_DRDY)
#define ADC12_GetStatus(pAdc) ((pAdc)->ADC12B_SR)
#define ADC12_GetChannelStatus(pAdc) ((pAdc)->ADC12B_CHSR)
#define ADC12_GetInterruptMaskStatus(pAdc) ((pAdc)->ADC12B_IMR)
#define ADC12_GetLastConvertedData(pAdc) ((pAdc)->ADC12B_LCDR)
#define ADC12_CfgAnalogCtrlReg(pAdc,mode) {\
ASSERT(((mode) & 0xFFFCFF3C)==0, "ADC bad analog control config");\
(pAdc)->ADC12B_ACR = (mode);\
}
#define ADC12_CfgExtModeReg(pAdc, extmode) {\
ASSERT(((extmode) & 0xFF00FFFE)==0, "ADC bad extended mode config");\
(pAdc)->ADC12B_EMR = (extmode);\
}
#define ADC12_GetAnalogCtrlReg(pAdc) ((pAdc)->ADC12B_ACR)
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
extern void ADC12_Initialize (AT91S_ADC12B *pAdc,
unsigned char idAdc,
unsigned char trgEn,
unsigned char trgSel,
unsigned char sleepMode,
unsigned char resolution,
unsigned int mckClock,
unsigned int adcClock,
unsigned int startupTime,
unsigned int sampleAndHoldTime);
extern unsigned int ADC12_GetConvertedData(AT91S_ADC12B *pAdc, unsigned int channel);
extern unsigned int ADC12_IsInterruptMasked(AT91S_ADC12B *pAdc, unsigned int flag);
extern unsigned int ADC12_IsStatusSet(AT91S_ADC12B *pAdc, unsigned int flag);
extern unsigned char ADC12_IsChannelInterruptStatusSet(unsigned int adc_sr,
unsigned int channel);
#endif //#ifndef ADC12_H
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