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