| /* ---------------------------------------------------------------------------- |
| * ATMEL Microcontroller Software Support |
| * ---------------------------------------------------------------------------- |
| * Copyright (c) 2009, 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 (ADC) peripheral. |
| * |
| * \section 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 _ADC_ |
| #define _ADC_ |
| |
| /*---------------------------------------------------------------------------- |
| * Headers |
| *----------------------------------------------------------------------------*/ |
| #include "chip.h" |
| |
| #include <assert.h> |
| #include <stdint.h> |
| |
| /*------------------------------------------------------------------------------ |
| * Definitions |
| *------------------------------------------------------------------------------*/ |
| /* SAM3S */ |
| #define ADC_FREQ_MAX 20000000 |
| #define ADC_FREQ_MIN 1000000 |
| |
| #define ADC_STARTUP_NORM 40 |
| #define ADC_STARTUP_FAST 12 |
| |
| #define ADC_CHANNEL_0 0 |
| #define ADC_CHANNEL_1 1 |
| #define ADC_CHANNEL_2 2 |
| #define ADC_CHANNEL_3 3 |
| #define ADC_CHANNEL_4 4 |
| #define ADC_CHANNEL_5 5 |
| #define ADC_CHANNEL_6 6 |
| #define ADC_CHANNEL_7 7 |
| #define ADC_CHANNEL_8 8 |
| #define ADC_CHANNEL_9 9 |
| #define ADC_CHANNEL_10 10 |
| #define ADC_CHANNEL_11 11 |
| #define ADC_CHANNEL_12 12 |
| #define ADC_CHANNEL_13 13 |
| #define ADC_CHANNEL_14 14 |
| #define ADC_CHANNEL_15 15 |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /*------------------------------------------------------------------------------ |
| * Macros function of register access |
| *------------------------------------------------------------------------------*/ |
| |
| #define ADC_GetModeReg( pAdc ) ((pAdc)->ADC_MR) |
| |
| #define ADC_StartConversion( pAdc ) ((pAdc)->ADC_CR = ADC_CR_START) |
| |
| |
| #define ADC_EnableChannel( pAdc, channel ) {\ |
| assert( channel < 16 ) ;\ |
| (pAdc)->ADC_CHER = (1 << (channel));\ |
| } |
| |
| #define ADC_DisableChannel(pAdc, channel) {\ |
| assert( (channel) < 16 ) ;\ |
| (pAdc)->ADC_CHDR = (1 << (channel));\ |
| } |
| |
| #define ADC_EnableIt(pAdc, dwMode) {\ |
| (pAdc)->ADC_IER = (dwMode);\ |
| } |
| |
| #define ADC_DisableIt(pAdc, dwMode) {\ |
| (pAdc)->ADC_IDR = (dwMode);\ |
| } |
| |
| #define ADC_EnableTS(pAdc,dwMode) {\ |
| (pAdc)->ADC_ACR |= dwMode;\ |
| } |
| |
| #define ADC_EnableDataReadyIt(pAdc) ((pAdc)->ADC_IER = AT91C_ADC_DRDY) |
| |
| #define ADC_GetStatus(pAdc) ((pAdc)->ADC_ISR) |
| |
| #define ADC_GetCompareMode(pAdc) (((pAdc)->ADC_EMR)& (ADC_EMR_CMPMODE_Msk)) |
| |
| #define ADC_GetChannelStatus(pAdc) ((pAdc)->ADC_CHSR) |
| |
| #define ADC_GetInterruptMaskStatus(pAdc) ((pAdc)->ADC_IMR) |
| |
| #define ADC_GetLastConvertedData(pAdc) ((pAdc)->ADC_LCDR) |
| |
| /*------------------------------------------------------------------------------ |
| * Exported functions |
| *------------------------------------------------------------------------------*/ |
| extern void ADC_Initialize( Adc* pAdc, uint32_t idAdc ); |
| extern void ADC_CfgTiming( Adc* pAdc, uint32_t tracking, uint32_t settling, uint32_t transfer ); |
| extern void ADC_cfgFrequency( Adc* pAdc, uint32_t startup, uint32_t prescal ); |
| extern void ADC_CfgTrigering( Adc* pAdc, uint32_t trgEn, uint32_t trgSel, uint32_t freeRun ); |
| extern void ADC_CfgLowRes( Adc* pAdc, uint32_t resolution ); |
| extern void ADC_CfgPowerSave( Adc* pAdc, uint32_t sleep, uint32_t fwup ); |
| extern void ADC_CfgChannelMode( Adc* pAdc, uint32_t useq, uint32_t anach ); |
| extern void ADC_check( Adc* pAdc, uint32_t mck_freq ); |
| |
| extern uint32_t ADC_GetConvertedData( Adc* pAdc, uint32_t dwChannel ) ; |
| extern void ADC_SetCompareChannel( Adc* pAdc, uint32_t dwChannel ) ; |
| extern void ADC_SetCompareMode( Adc* pAdc, uint32_t dwMode ) ; |
| extern void ADC_SetComparisonWindow( Adc* pAdc, uint32_t dwHi_Lo ) ; |
| extern uint32_t ADC_IsInterruptMasked( Adc* pAdc, uint32_t dwFlag ) ; |
| extern uint32_t ADC_IsStatusSet( Adc* pAdc, uint32_t dwFlag ) ; |
| extern uint32_t ADC_IsChannelInterruptStatusSet( uint32_t adc_sr, uint32_t dwChannel ) ; |
| extern uint32_t ADC_ReadBuffer( Adc* pADC, int16_t *pwBuffer, uint32_t dwSize ) ; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* #ifndef _ADC_ */ |