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/*
* Copyright (c) 2016 Open-RnD Sp. z o.o.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @brief Driver for External interrupt/event controller in STM32 MCUs
*
* Based on reference manuals:
* RM0008 Reference Manual: STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx
* and STM32F107xx advanced ARM(r)-based 32-bit MCUs
* and
* RM0368 Reference manual STM32F401xB/C and STM32F401xD/E
* advanced ARM(r)-based 32-bit MCUs
*
* Chapter 10.2: External interrupt/event controller (EXTI)
*
*/
#ifndef ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_
#define ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_
#include <zephyr/types.h>
/* device name */
#define STM32_EXTI_NAME "stm32-exti"
/**
* @brief enable EXTI interrupt for specific line
*
* @param line EXTI# line
*/
void stm32_exti_enable(int line);
/**
* @brief disable EXTI interrupt for specific line
*
* @param line EXTI# line
*/
void stm32_exti_disable(int line);
/**
* @brief EXTI trigger flags
*/
enum stm32_exti_trigger {
/* clear trigger */
STM32_EXTI_TRIG_NONE = 0x0,
/* trigger on rising edge */
STM32_EXTI_TRIG_RISING = 0x1,
/* trigger on falling endge */
STM32_EXTI_TRIG_FALLING = 0x2,
/* trigger on falling endge */
STM32_EXTI_TRIG_BOTH = 0x3,
};
/**
* @brief set EXTI interrupt line triggers
*
* @param line EXTI# line
* @param trg OR'ed stm32_exti_trigger flags
*/
void stm32_exti_trigger(int line, int trg);
/* callback for exti interrupt */
typedef void (*stm32_exti_callback_t) (int line, void *user);
/**
* @brief set EXTI interrupt callback
*
* @param line EXI# line
* @param cb user callback
* @param data user data
*/
int stm32_exti_set_callback(int line, stm32_exti_callback_t cb, void *data);
/**
* @brief unset EXTI interrupt callback
*
* @param line EXI# line
*/
void stm32_exti_unset_callback(int line);
#endif /* ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_ */