diff options
Diffstat (limited to 'os/hal/platforms/STM32/ext_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32/ext_lld.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32/ext_lld.h b/os/hal/platforms/STM32/ext_lld.h new file mode 100644 index 000000000..45e863d9c --- /dev/null +++ b/os/hal/platforms/STM32/ext_lld.h @@ -0,0 +1,265 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011 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/ext_lld.h
+ * @brief STM32 EXT subsystem low level driver header.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#ifndef _EXT_LLD_H_
+#define _EXT_LLD_H_
+
+#if HAL_USE_EXT || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @brief Available number of EXT channels.
+ * @note The number of available channels varies depending on the STM32
+ * subfamily:
+ * - STM32F10X_CL, 20 channels.
+ * - STM32F2XX, 23 channels.
+ * - STM32L1XX_MD, 23 channels.
+ * - All other STM32F10X_xx, 19 channels.
+ * .
+ */
+#if defined(STM32F10X_CL) || defined(__DOXYGEN__)
+#define EXT_MAX_CHANNELS 20
+#elif defined(STM32F2XX)
+#define EXT_MAX_CHANNELS 23
+#else
+#define EXT_MAX_CHANNELS 19
+#endif
+
+/**
+ * @brief Mask of the available channels.
+ */
+#define EXT_CHANNELS_MASK (EXT_MAX_CHANNELS - 1)
+
+/**
+ * @name EXTI configuration helpers
+ * @{
+ */
+/**
+ * @brief EXTI-GPIO association macro.
+ * @details Helper macro to associate a GPIO to each of the Mx EXTI inputs.
+ */
+#define EXT_MODE_EXTI(m0, m1, m2, m3, m4, m5, m6, m7, \
+ m8, m9, m10, m11, m12, m13, m14, m15) \
+ { \
+ ((m0) << 0) | ((m1) << 4) | ((m2) << 8) | ((m3) << 12), \
+ ((m4) << 0) | ((m5) << 4) | ((m6) << 8) | ((m7) << 12), \
+ ((m8) << 0) | ((m9) << 4) | ((m10) << 8) | ((m11) << 12), \
+ ((m12) << 0) | ((m13) << 4) | ((m14) << 8) | ((m15) << 12) \
+ }
+
+#define EXT_MODE_GPIOA 0 /**< @brief GPIOA identifier. */
+#define EXT_MODE_GPIOB 1 /**< @brief GPIOB identifier. */
+#define EXT_MODE_GPIOC 2 /**< @brief GPIOC identifier. */
+#define EXT_MODE_GPIOD 3 /**< @brief GPIOD identifier. */
+#define EXT_MODE_GPIOE 4 /**< @brief GPIOE identifier. */
+#define EXT_MODE_GPIOF 5 /**< @brief GPIOF identifier. */
+#define EXT_MODE_GPIOG 6 /**< @brief GPIOG identifier. */
+#define EXT_MODE_GPIOH 7 /**< @brief GPIOH identifier. */
+#define EXT_MODE_GPIOI 8 /**< @brief GPIOI identifier. */
+/** @} */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief EXTI0 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI0_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI1 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI1_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI2 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI2_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI2_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI3 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI3_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI3_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI4 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI4_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI4_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI9..5 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI5_9_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI5_9_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI15..10 interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI10_15_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI10_15_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI16 (PVD) interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI16_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI16_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI17 (RTC) interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI17_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI17_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI18 (USB) interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI18_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI18_IRQ_PRIORITY 6
+#endif
+
+/**
+ * @brief EXTI19 (ETH) interrupt priority level setting.
+ */
+#if !defined(STM32_EXT_EXTI19_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_EXT_EXTI19_IRQ_PRIORITY 6
+#endif
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief EXT channel identifier.
+ */
+typedef uint32_t expchannel_t;
+
+/**
+ * @brief Type of an EXT generic notification callback.
+ *
+ * @param[in] extp pointer to the @p EXPDriver object triggering the
+ * callback
+ */
+typedef void (*extcallback_t)(EXTDriver *extp, expchannel_t channel);
+
+/**
+ * @brief Channel configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Channel mode.
+ */
+ uint32_t mode;
+ /**
+ * @brief Channel callback.
+ * @details In the STM32 implementation a @p NULL callback pointer is
+ * valid and configures the channel as an event sources instead
+ * of an interrupt source.
+ */
+ extcallback_t cb;
+} EXTChannelConfig;
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /**
+ * @brief Channel configurations.
+ */
+ EXTChannelConfig channels[EXT_MAX_CHANNELS];
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Initialization values for EXTICRx registers.
+ */
+ uint16_t exti[4];
+} EXTConfig;
+
+/**
+ * @brief Structure representing an EXT driver.
+ */
+struct EXTDriver {
+ /**
+ * @brief Driver state.
+ */
+ extstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const EXTConfig *config;
+ /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if !defined(__DOXYGEN__)
+extern EXTDriver EXTD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void ext_lld_init(void);
+ void ext_lld_start(EXTDriver *extp);
+ void ext_lld_stop(EXTDriver *extp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_EXT */
+
+#endif /* _EXT_LLD_H_ */
+
+/** @} */
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