gd32_exti.h File Reference

#include <stdint.h>
#include <sys/util_macro.h>

Go to the source code of this file.

Macros
EXTI trigger modes.
#define	GD32_EXTI_TRIG_NONE   0U
#define	GD32_EXTI_TRIG_RISING   BIT(0)
#define	GD32_EXTI_TRIG_FALLING   BIT(1)
#define	GD32_EXTI_TRIG_BOTH   (GD32_EXTI_TRIG_RISING | GD32_EXTI_TRIG_FALLING)

Typedefs
typedef void(*	gd32_exti_cb_t) (uint8_t line, void *user)

Functions
void	gd32_exti_enable (uint8_t line)
	Enable EXTI interrupt for the given line. More...
void	gd32_exti_disable (uint8_t line)
	Disable EXTI interrupt for the given line. More...
void	gd32_exti_trigger (uint8_t line, uint8_t trigger)
	Configure EXTI interrupt trigger mode for the given line. More...
int	gd32_exti_configure (uint8_t line, gd32_exti_cb_t cb, void *user)
	Configure EXTI interrupt callback. More...

Macro Definition Documentation

GD32_EXTI_TRIG_BOTH

#define GD32_EXTI_TRIG_BOTH   (GD32_EXTI_TRIG_RISING | GD32_EXTI_TRIG_FALLING)

Trigger on rising and falling edge

GD32_EXTI_TRIG_FALLING

#define GD32_EXTI_TRIG_FALLING   BIT(1)

Trigger on falling endge

GD32_EXTI_TRIG_NONE

#define GD32_EXTI_TRIG_NONE   0U

No trigger

GD32_EXTI_TRIG_RISING

#define GD32_EXTI_TRIG_RISING   BIT(0)

Trigger on rising edge

Typedef Documentation

gd32_exti_cb_t

typedef void(* gd32_exti_cb_t) (uint8_t line, void *user)

Callback for EXTI interrupt.

Function Documentation

gd32_exti_configure()

int gd32_exti_configure	(	uint8_t	line,
		gd32_exti_cb_t	cb,
		void *	user
	)

Configure EXTI interrupt callback.

Parameters

line	EXTI line.
cb	Callback (NULL to disable).
user	User data (optional).

Return values

0	On success.
-EALREADY	If callback is already set and cb is not NULL.

gd32_exti_disable()

void gd32_exti_disable

(

uint8_t

line

)

Disable EXTI interrupt for the given line.

Parameters

line	EXTI line.

gd32_exti_enable()

void gd32_exti_enable

(

uint8_t

line

)

Enable EXTI interrupt for the given line.

Parameters

line	EXTI line.

gd32_exti_trigger()

void gd32_exti_trigger	(	uint8_t	line,
		uint8_t	trigger
	)

Configure EXTI interrupt trigger mode for the given line.

Parameters

line	EXTI line.
trigger	Trigger mode (see GD32_EXTI_TRIG).