1 /* 2 * Copyright (c) 2016 Open-RnD Sp. z o.o. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /** 8 * @brief Driver for External interrupt/event controller in STM32 MCUs 9 * 10 * Based on reference manuals: 11 * RM0008 Reference Manual: STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx 12 * and STM32F107xx advanced ARM(r)-based 32-bit MCUs 13 * and 14 * RM0368 Reference manual STM32F401xB/C and STM32F401xD/E 15 * advanced ARM(r)-based 32-bit MCUs 16 * 17 * Chapter 10.2: External interrupt/event controller (EXTI) 18 * 19 */ 20 21 #ifndef ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_ 22 #define ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_ 23 24 #include <zephyr/types.h> 25 26 /** 27 * @brief enable EXTI interrupt for specific line 28 * 29 * @param line EXTI# line 30 */ 31 void stm32_exti_enable(int line); 32 33 /** 34 * @brief disable EXTI interrupt for specific line 35 * 36 * @param line EXTI# line 37 */ 38 void stm32_exti_disable(int line); 39 40 /** 41 * @brief EXTI trigger flags 42 */ 43 enum stm32_exti_trigger { 44 /* clear trigger */ 45 STM32_EXTI_TRIG_NONE = 0x0, 46 /* trigger on rising edge */ 47 STM32_EXTI_TRIG_RISING = 0x1, 48 /* trigger on falling endge */ 49 STM32_EXTI_TRIG_FALLING = 0x2, 50 /* trigger on falling endge */ 51 STM32_EXTI_TRIG_BOTH = 0x3, 52 }; 53 54 /** 55 * @brief set EXTI interrupt line triggers 56 * 57 * @param line EXTI# line 58 * @param trg OR'ed stm32_exti_trigger flags 59 */ 60 void stm32_exti_trigger(int line, int trg); 61 62 /* callback for exti interrupt */ 63 typedef void (*stm32_exti_callback_t) (int line, void *user); 64 65 /** 66 * @brief set EXTI interrupt callback 67 * 68 * @param line EXI# line 69 * @param cb user callback 70 * @param data user data 71 */ 72 int stm32_exti_set_callback(int line, stm32_exti_callback_t cb, void *data); 73 74 /** 75 * @brief unset EXTI interrupt callback 76 * 77 * @param line EXI# line 78 */ 79 void stm32_exti_unset_callback(int line); 80 81 #endif /* ZEPHYR_DRIVERS_INTERRUPT_CONTROLLER_INTC_EXTI_STM32_H_ */ 82
