266 lines
8.3 KiB
C
266 lines
8.3 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 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/ext_lld.h
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* @brief STM32 EXT subsystem low level driver header.
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*
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* @addtogroup EXT
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* @{
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*/
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#ifndef _EXT_LLD_H_
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#define _EXT_LLD_H_
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#if HAL_USE_EXT || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/**
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* @brief Available number of EXT channels.
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* @note The number of available channels varies depending on the STM32
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* subfamily:
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* - STM32F10X_CL, 20 channels.
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* - STM32F2XX, 23 channels.
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* - STM32L1XX_MD, 23 channels.
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* - All other STM32F10X_xx, 19 channels.
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* .
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*/
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#if defined(STM32F10X_CL) || defined(__DOXYGEN__)
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#define EXT_MAX_CHANNELS 20
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#elif defined(STM32F2XX)
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#define EXT_MAX_CHANNELS 23
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#else
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#define EXT_MAX_CHANNELS 19
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#endif
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/**
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* @brief Mask of the available channels.
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*/
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#define EXT_CHANNELS_MASK (EXT_MAX_CHANNELS - 1)
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/**
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* @name EXTI configuration helpers
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* @{
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*/
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/**
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* @brief EXTI-GPIO association macro.
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* @details Helper macro to associate a GPIO to each of the Mx EXTI inputs.
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*/
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#define EXT_MODE_EXTI(m0, m1, m2, m3, m4, m5, m6, m7, \
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m8, m9, m10, m11, m12, m13, m14, m15) \
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{ \
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((m0) << 0) | ((m1) << 4) | ((m2) << 8) | ((m3) << 12), \
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((m4) << 0) | ((m5) << 4) | ((m6) << 8) | ((m7) << 12), \
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((m8) << 0) | ((m9) << 4) | ((m10) << 8) | ((m11) << 12), \
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((m12) << 0) | ((m13) << 4) | ((m14) << 8) | ((m15) << 12) \
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}
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#define EXT_MODE_GPIOA 0 /**< @brief GPIOA identifier. */
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#define EXT_MODE_GPIOB 1 /**< @brief GPIOB identifier. */
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#define EXT_MODE_GPIOC 2 /**< @brief GPIOC identifier. */
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#define EXT_MODE_GPIOD 3 /**< @brief GPIOD identifier. */
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#define EXT_MODE_GPIOE 4 /**< @brief GPIOE identifier. */
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#define EXT_MODE_GPIOF 5 /**< @brief GPIOF identifier. */
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#define EXT_MODE_GPIOG 6 /**< @brief GPIOG identifier. */
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#define EXT_MODE_GPIOH 7 /**< @brief GPIOH identifier. */
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#define EXT_MODE_GPIOI 8 /**< @brief GPIOI identifier. */
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/** @} */
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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 EXTI0 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI0_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI0_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI1 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI1_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI2 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI2_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI2_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI3 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI3_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI3_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI4 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI4_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI4_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI9..5 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI5_9_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI5_9_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI15..10 interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI10_15_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI10_15_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI16 (PVD) interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI16_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI16_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI17 (RTC) interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI17_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI17_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI18 (USB) interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI18_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI18_IRQ_PRIORITY 6
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#endif
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/**
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* @brief EXTI19 (ETH) interrupt priority level setting.
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*/
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#if !defined(STM32_EXT_EXTI19_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_EXT_EXTI19_IRQ_PRIORITY 6
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#endif
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/*===========================================================================*/
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/* Derived constants and error checks. */
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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 EXT channel identifier.
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*/
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typedef uint32_t expchannel_t;
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/**
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* @brief Type of an EXT generic notification callback.
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*
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* @param[in] extp pointer to the @p EXPDriver object triggering the
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* callback
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*/
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typedef void (*extcallback_t)(EXTDriver *extp, expchannel_t channel);
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/**
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* @brief Channel configuration structure.
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*/
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typedef struct {
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/**
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* @brief Channel mode.
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*/
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uint32_t mode;
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/**
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* @brief Channel callback.
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* @details In the STM32 implementation a @p NULL callback pointer is
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* valid and configures the channel as an event sources instead
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* of an interrupt source.
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*/
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extcallback_t cb;
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} EXTChannelConfig;
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/**
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* @brief Driver configuration structure.
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* @note It could be empty on some architectures.
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*/
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typedef struct {
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/**
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* @brief Channel configurations.
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*/
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EXTChannelConfig channels[EXT_MAX_CHANNELS];
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/* End of the mandatory fields.*/
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/**
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* @brief Initialization values for EXTICRx registers.
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*/
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uint16_t exti[4];
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} EXTConfig;
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/**
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* @brief Structure representing an EXT driver.
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*/
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struct EXTDriver {
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/**
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* @brief Driver state.
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*/
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extstate_t state;
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/**
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* @brief Current configuration data.
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*/
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const EXTConfig *config;
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/* End of the mandatory fields.*/
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};
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#if !defined(__DOXYGEN__)
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extern EXTDriver EXTD1;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void ext_lld_init(void);
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void ext_lld_start(EXTDriver *extp);
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void ext_lld_stop(EXTDriver *extp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_EXT */
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#endif /* _EXT_LLD_H_ */
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/** @} */
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