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https://github.com/zephyrproject-rtos/zephyr
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95e7fb6c98
This patch adds support for the STMicroelectronics STM32F4x family in the STM32 MCU line. Configuration is included for the STM32F401RE MCU. Acknowledgements to Pawel Wodnicki's earlier submission from February that was used as a starting point for this port. In the end, we rewrote all of it. Change-Id: I9797c282ac3c0cc66a63b9d34821de95df537ef6 Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
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* Copyright (c) 2016 Open-RnD Sp. z o.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @brief Driver for External interrupt/event controller in STM32 MCUs
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*
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* Based on reference manuals:
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* RM0008 Reference Manual: STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx
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* and STM32F107xx advanced ARM-based 32-bit MCUs
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* and
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* RM0368 Reference manual STM32F401xB/C and STM32F401xD/E
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* advanced ARM-based 32-bit MCUs
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*
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* Chapter 10.2: External interrupt/event controller (EXTI)
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*
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*/
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#ifndef _STM32_EXTI_H_
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#define _STM32_EXTI_H_
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#include <stdint.h>
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/* device name */
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#define STM32_EXTI_NAME "stm32-exti"
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/**
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* @brief enable EXTI interrupt for specific line
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*
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* @param line EXTI# line
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*/
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void stm32_exti_enable(int line);
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/**
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* @brief disable EXTI interrupt for specific line
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*
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* @param line EXTI# line
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*/
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void stm32_exti_disable(int line);
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/**
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* @brief EXTI trigger flags
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*/
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enum stm32_exti_trigger {
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/* trigger on rising edge */
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STM32_EXTI_TRIG_RISING = 0x1,
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/* trigger on falling endge */
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STM32_EXTI_TRIG_FALLING = 0x2,
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};
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/**
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* @brief set EXTI interrupt line triggers
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*
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* @param line EXTI# line
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* @param trg OR'ed stm32_exti_trigger flags
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*/
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void stm32_exti_trigger(int line, int trg);
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/* callback for exti interrupt */
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typedef void (*stm32_exti_callback_t) (int line, void *user);
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/**
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* @brief set EXTI interrupt callback
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*
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* @param line EXI# line
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* @param cb user callback
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* @param arg user arg
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*/
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void stm32_exti_set_callback(int line, stm32_exti_callback_t cb, void *data);
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/**
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* @brief unset EXTI interrupt callback
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*
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* @param line EXI# line
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*/
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void stm32_exti_unset_callback(int line);
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#endif /* _STM32_EXTI_H_ */
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