186 lines
5.3 KiB
C
186 lines
5.3 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file STM32/adc_lld.h
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* @brief STM32 ADC subsystem low level driver header
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* @addtogroup STM32_ADC
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* @{
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*/
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#ifndef _ADC_LLD_H_
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#define _ADC_LLD_H_
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#undef FALSE
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#undef TRUE
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#include <stm32f10x.h>
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#define FALSE 0
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#define TRUE (!FALSE)
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @brief ADC1 driver enable switch.
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* @details If set to @p TRUE the support for ADC1 is included.
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* @note The default is @p TRUE.
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*/
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#if !defined(USE_STM32_ADC1) || defined(__DOXYGEN__)
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#define USE_STM32_ADC1 TRUE
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#endif
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/**
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* @brief ADC1 DMA priority (0..3|lowest..highest).
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*/
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#if !defined(ADC1_DMA_PRIORITY) || defined(__DOXYGEN__)
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#define ADC1_DMA_PRIORITY 1
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#endif
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/**
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* @brief ADC1 interrupt priority level setting.
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* @note @p BASEPRI_KERNEL >= @p STM32_ADC1_IRQ_PRIORITY > @p PRIORITY_PENDSV.
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*/
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#if !defined(STM32_ADC1_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_ADC1_IRQ_PRIORITY 0x70
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#endif
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief ADC sample data type.
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*/
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typedef uint16_t adcsample_t;
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/**
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* @brief Channels number in a conversion group.
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*/
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typedef uint16_t adc_channels_num_t;
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/**
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* @brief ADC notification callback type.
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* @param[in] buffer pointer to the most recent samples data
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* @param[in] n number of buffer rows available starting from @p buffer
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*/
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typedef void (*adccallback_t)(adcsample_t *buffer, size_t n);
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/**
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* @brief Conversion group configuration structure.
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* @details This implementation-dependent structure describes a conversion
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* operation.
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*/
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typedef struct {
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/**
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* @brief Number of the analog channels belonging to the conversion group.
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*/
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adc_channels_num_t acg_num_channels;
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/**
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* @brief ADC CR1 register initialization data.
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*/
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uint32_t acg_cr1;
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/**
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* @brief ADC CR2 register initialization data.
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*/
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uint32_t acg_cr2;
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/**
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* @brief ADC SMPR1 register initialization data.
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*/
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uint32_t acg_smpr1;
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/**
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* @brief ADC SMPR2 register initialization data.
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*/
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uint32_t acg_smpr2;
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/**
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* @brief ADC SQR1 register initialization data.
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*/
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uint32_t acg_sqr1;
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/**
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* @brief ADC SQR2 register initialization data.
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*/
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uint32_t acg_sqr2;
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/**
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* @brief ADC SQR3 register initialization data.
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*/
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uint32_t acg_sqr3;
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} ADCConversionGroup;
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/**
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* @brief Driver configuration structure.
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*/
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typedef struct {
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} ADCConfig;
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/**
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* @brief Structure representing an ADC driver.
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*/
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typedef struct {
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/**
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* @brief Driver state.
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*/
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adcstate_t ad_state;
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/**
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* @brief Current configuration data.
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*/
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const ADCConfig *ad_config;
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/**
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* @brief Semaphore for completion synchronization.
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*/
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Semaphore ad_sem;
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/* End of the mandatory fields.*/
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/**
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* @brief Pointer to the ADCx registers block.
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*/
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ADC_TypeDef *ad_adc;
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/**
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* @brief Pointer to the DMA channel registers block.
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*/
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DMA_Channel_TypeDef *ad_dma;
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} ADCDriver;
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void adc_lld_init(void);
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void adc_lld_start(ADCDriver *adcp);
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void adc_lld_stop(ADCDriver *adcp);
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void adc_lld_start_conversion(ADCDriver *adcp,
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ADCConversionGroup *grpp,
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void *samples,
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size_t depth,
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adccallback_t callback);
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void adc_lld_stop_conversion(ADCDriver *adcp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ADC_LLD_H_ */
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/** @} */
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