Line data    Source code

       1            0 : /*
       2              :  * Copyright (c) 2021 Teslabs Engineering S.L.
       3              :  *
       4              :  * SPDX-License-Identifier: Apache-2.0
       5              :  */
       6              : 
       7              : #ifndef ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_GD32_EXTI_H_
       8              : #define ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_GD32_EXTI_H_
       9              : 
      10              : #include <stdint.h>
      11              : 
      12              : #include <zephyr/sys/util_macro.h>
      13              : 
      14              : /**
      15              :  * @name EXTI trigger modes.
      16              :  * @anchor GD32_EXTI_TRIG
      17              :  * @{
      18              :  */
      19              : 
      20              : /** No trigger */
      21            1 : #define GD32_EXTI_TRIG_NONE 0U
      22              : /** Trigger on rising edge */
      23            1 : #define GD32_EXTI_TRIG_RISING BIT(0)
      24              : /** Trigger on falling edge */
      25            1 : #define GD32_EXTI_TRIG_FALLING BIT(1)
      26              : /** Trigger on rising and falling edge */
      27            1 : #define GD32_EXTI_TRIG_BOTH (GD32_EXTI_TRIG_RISING | GD32_EXTI_TRIG_FALLING)
      28              : 
      29              : /** @} */
      30              : 
      31              : /** Callback for EXTI interrupt. */
      32            1 : typedef void (*gd32_exti_cb_t)(uint8_t line, void *user);
      33              : 
      34              : /**
      35              :  * @brief Enable EXTI interrupt for the given line.
      36              :  *
      37              :  * @param line EXTI line.
      38              :  */
      39            1 : void gd32_exti_enable(uint8_t line);
      40              : 
      41              : /**
      42              :  * @brief Disable EXTI interrupt for the given line.
      43              :  *
      44              :  * @param line EXTI line.
      45              :  */
      46            1 : void gd32_exti_disable(uint8_t line);
      47              : 
      48              : /**
      49              :  * @brief Configure EXTI interrupt trigger mode for the given line.
      50              :  *
      51              :  * @param line EXTI line.
      52              :  * @param trigger Trigger mode (see @ref GD32_EXTI_TRIG).
      53              :  */
      54            1 : void gd32_exti_trigger(uint8_t line, uint8_t trigger);
      55              : 
      56              : /**
      57              :  * @brief Configure EXTI interrupt callback.
      58              :  *
      59              :  * @param line EXTI line.
      60              :  * @param cb Callback (NULL to disable).
      61              :  * @param user User data (optional).
      62              :  *
      63              :  * @retval 0 On success.
      64              :  * @retval -EALREADY If callback is already set and @p cb is not NULL.
      65              :  */
      66            1 : int gd32_exti_configure(uint8_t line, gd32_exti_cb_t cb, void *user);
      67              : 
      68              : #endif /* ZEPHYR_INCLUDE_DRIVERS_INTERRUPT_CONTROLLER_GD32_EXTI_H_ */