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140 lines
5.2 KiB
C
140 lines
5.2 KiB
C
/*! \file *********************************************************************
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*
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* \brief API for SAM3 Analog-to-Digital Converter (ADC/ADC12B) controller.
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*
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* ----------------------------------------------------------------------------
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* SAM Software Package License
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* ----------------------------------------------------------------------------
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* Copyright (c) 2011, 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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* - Compiler: IAR EWARM and CodeSourcery GCC for ARM
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* - Supported devices: All SAM devices with a Analog-to-Digital Converter can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.com/
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*
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*******************************************************************************/
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#ifndef ADC_H_INCLUDED
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#define ADC_H_INCLUDED
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#include "../chip.h"
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#define ADC_FREQ_MAX 5000000
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#define ADC_STARTUP 20
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#define ADC12_FREQ_MAX 20000000
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#define ADC12_FREQ_MIN 1000000
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#define ADC12_STARTUP_NORM 40
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#define ADC12_STARTUP_FAST 12
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/* Definitions for ADC resolution */
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typedef enum _adc_resolution_t {
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#if SAM3N_SERIES || SAM3U_SERIES
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ADC_8_BITS = ADC_MR_LOWRES_BITS_8, /* ADC 8-bit resolution */
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#endif /* SAM3N_SERIES || SAM3U_SERIES */
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ADC_10_BITS = ADC_MR_LOWRES_BITS_10, /* ADC 10-bit resolution */
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#if SAM3S_SERIES || SAM3XA_SERIES
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ADC_12_BITS = ADC_MR_LOWRES_BITS_12, /* ADC 12-bit resolution */
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#endif /* SAM3S_SERIES || SAM3XA_SERIES */
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ADC_NONE
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} adc_resolution_t;
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#if SAM3U_SERIES
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typedef enum _adc12_resolution_t {
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ADC12_10_BITS = ADC12B_MR_LOWRES_BITS_10, /* ADC 10-bit resolution */
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ADC12_12_BITS = ADC12B_MR_LOWRES_BITS_12 /* ADC 12-bit resolution */
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} adc12_resolution_t;
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#endif /* SAM3U_SERIES */
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/* Definitions for ADC trigger */
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typedef enum _adc_trigger_t {
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ADC_TRIG_SW = ADC_MR_TRGEN_DIS, /* Starting a conversion is only possible by software. */
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ADC_TRIG_EXT = ((ADC_MR_TRGSEL_ADC_TRIG0 <<ADC_MR_TRGSEL_Pos) & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN, /* External trigger */
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ADC_TRIG_TIO_CH_0 = (ADC_MR_TRGSEL_ADC_TRIG1 & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN, /* TIO Output of the Timer Counter Channel 0 */
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ADC_TRIG_TIO_CH_1 = (ADC_MR_TRGSEL_ADC_TRIG2 & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN, /* TIO Output of the Timer Counter Channel 1 */
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ADC_TRIG_TIO_CH_2 = (ADC_MR_TRGSEL_ADC_TRIG3 & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN, /* TIO Output of the Timer Counter Channel 2 */
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#if SAM3S_SERIES || SAM3XA_SERIES || SAM3U_SERIES
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ADC_TRIG_PWM_EVENT_LINE_0 = (ADC_MR_TRGSEL_ADC_TRIG4 & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN, /* PWM Event Line 0 */
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ADC_TRIG_PWM_EVENT_LINE_1 = (ADC_MR_TRGSEL_ADC_TRIG5 & ADC_MR_TRGSEL_Msk) | ADC_MR_TRGEN /* PWM Event Line 1 */
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#endif
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} adc_trigger_t;
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/* Definitions for ADC channel number */
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typedef enum _adc_channel_num_t {
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ADC_CHANNEL_0 = 0,
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ADC_CHANNEL_1 = 1,
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ADC_CHANNEL_2 = 2,
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ADC_CHANNEL_3 = 3,
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ADC_CHANNEL_4 = 4,
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ADC_CHANNEL_5 = 5,
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ADC_CHANNEL_6 = 6,
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ADC_CHANNEL_7 = 7,
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#if SAM3S_SERIES || SAM3N_SERIES || SAM3XA_SERIES
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ADC_CHANNEL_8 = 8,
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ADC_CHANNEL_9 = 9,
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ADC_CHANNEL_10 = 10,
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ADC_CHANNEL_11 = 11,
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ADC_CHANNEL_12 = 12,
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ADC_CHANNEL_13 = 13,
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ADC_CHANNEL_14 = 14,
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ADC_TEMPERATURE_SENSOR = 15,
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ADC_ALL_CHANNEL = 0xffff
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#elif SAM3U_SERIES
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ADC_ALL_CHANNEL = 0xff
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#endif /* SAM3U_SERIES */
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} adc_channel_num_t;
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typedef enum _adc_gainvalue_t {
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ADC_GAINVALUE_0 = 0,
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ADC_GAINVALUE_1 = 1,
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ADC_GAINVALUE_2 = 2,
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ADC_GAINVALUE_3 = 3
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} adc_gainvalue_t ;
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#if SAM3S_SERIES || SAM3XA_SERIES
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typedef enum {
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ADC_SETTLING_TIME_0 = ADC_MR_SETTLING_AST3,
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ADC_SETTLING_TIME_1 = ADC_MR_SETTLING_AST5,
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ADC_SETTLING_TIME_2 = ADC_MR_SETTLING_AST9,
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ADC_SETTLING_TIME_3 = ADC_MR_SETTLING_AST17
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}adc_settling_time_t;
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#endif
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#if SAM3S_SERIES || SAM3N_SERIES || SAM3XA_SERIES
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#include "adc_sam3snxa.h"
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#elif SAM3U_SERIES
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#include "adc10_sam3u.h"
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#include "adc12_sam3u.h"
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#endif
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#endif /* #ifndef ADC_H_INCLUDED */
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