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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