Line data    Source code

       1            0 : /*
       2              :  * Copyright (c) 2025 Michael Hope <michaelh@juju.nz>
       3              :  *
       4              :  * SPDX-License-Identifier: Apache-2.0
       5              :  */
       6              : 
       7              : #ifndef ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_WCH_EXTI_H_
       8              : #define ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_WCH_EXTI_H_
       9              : 
      10              : #include <stdint.h>
      11              : 
      12              : #include <zephyr/sys/util_macro.h>
      13              : 
      14              : /* Callback for EXTI interrupt. */
      15            0 : typedef void (*wch_exti_callback_handler_t)(uint8_t line, void *user);
      16              : 
      17            0 : enum wch_exti_trigger {
      18              :         /*
      19              :          * Note that this is a flag set and these values can be ORed to trigger on
      20              :          * both edges.
      21              :          */
      22              : 
      23              :         /* Trigger on rising edge */
      24              :         WCH_EXTI_TRIGGER_RISING_EDGE = BIT(0),
      25              :         /* Trigger on falling edge */
      26              :         WCH_EXTI_TRIGGER_FALLING_EDGE = BIT(1),
      27              : };
      28              : 
      29              : /* Enable the EXTI interrupt for `line` */
      30            0 : void wch_exti_enable(uint8_t line);
      31              : 
      32              : /* Disable the EXTI interrupt for `line` */
      33            0 : void wch_exti_disable(uint8_t line);
      34              : 
      35              : /* Set the trigger mode for `line` */
      36            0 : void wch_exti_set_trigger(uint8_t line, enum wch_exti_trigger trigger);
      37              : 
      38              : /* Register a callback for `line` */
      39            0 : int wch_exti_configure(uint8_t line, wch_exti_callback_handler_t callback, void *user);
      40              : 
      41              : #endif /* ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_WCH_EXTI_H_ */