intc_exti_stm32.h File Reference

#include <zephyr/types.h>

Go to the source code of this file.

Enumerations
enum	stm32_exti_trigger_type { STM32_EXTI_TRIG_NONE = 0x0 , STM32_EXTI_TRIG_RISING = 0x1 , STM32_EXTI_TRIG_FALLING = 0x2 , STM32_EXTI_TRIG_BOTH = 0x3 }
	STM32 EXTI interrupt controller API. More...
enum	stm32_exti_mode { STM32_EXTI_MODE_IT = 0x0 , STM32_EXTI_MODE_EVENT = 0x1 , STM32_EXTI_MODE_BOTH = 0x2 , STM32_EXTI_MODE_NONE = 0x3 }
	EXTI line mode. More...

Functions
int	stm32_exti_enable (uint32_t line_num, stm32_exti_trigger_type trigger, stm32_exti_mode mode)
	Enable EXTI line.
int	stm32_exti_disable (uint32_t line_num)
	Disable EXTI line.
bool	stm32_exti_is_pending (uint32_t line_num)
	Checks interrupt pending bit for specified EXTI line.
int	stm32_exti_clear_pending (uint32_t line_num)
	Clears interrupt pending bit for specified EXTI line.
int	stm32_exti_sw_interrupt (uint32_t line_num)
	Generates SW interrupt for specified EXTI line number.

Enumeration Type Documentation

stm32_exti_mode

enum stm32_exti_mode

EXTI line mode.

Enumerator
STM32_EXTI_MODE_IT
STM32_EXTI_MODE_EVENT
STM32_EXTI_MODE_BOTH
STM32_EXTI_MODE_NONE

stm32_exti_trigger_type

enum stm32_exti_trigger_type

STM32 EXTI interrupt controller API.

This API is used to interact with STM32 EXTI interrupt controller

EXTI interrupt trigger type

Enumerator
STM32_EXTI_TRIG_NONE
STM32_EXTI_TRIG_RISING
STM32_EXTI_TRIG_FALLING
STM32_EXTI_TRIG_BOTH

Function Documentation

stm32_exti_clear_pending()

int stm32_exti_clear_pending

(

uint32_t

line_num

)

Clears interrupt pending bit for specified EXTI line.

Parameters

line_num

EXTI line number

Returns

0 on success, -EINVAL if line is invalid

stm32_exti_disable()

int stm32_exti_disable

(

uint32_t

line_num

)

Disable EXTI line.

After this function has been called, EXTI line line_num will not generate further interrupts or events.

Parameters

line_num

EXTI line number

Returns

0 on success, -EINVAL if line is invalid

stm32_exti_enable()

int stm32_exti_enable	(	uint32_t	line_num,
		stm32_exti_trigger_type	trigger,
		stm32_exti_mode	mode )

Enable EXTI line.

Note

The caller driver is responsible for registering an ISR and enabling the corresponding interrupt if MODE_IT is selected.

Parameters

line_num	EXTI line number
trigger	EXTI trigger type (see stm32_exti_trigger_type)
mode	EXTI mode (see stm32_exti_mode)

Returns

0 on success, -EINVAL if line_num is invalid

stm32_exti_is_pending()

bool stm32_exti_is_pending

(

uint32_t

line_num

)

Checks interrupt pending bit for specified EXTI line.

Parameters

line_num

EXTI line number

Returns

true if line is pending, false otherwise

stm32_exti_sw_interrupt()

int stm32_exti_sw_interrupt

(

uint32_t

line_num

)

Generates SW interrupt for specified EXTI line number.

Parameters

line_num

EXTI line number

Returns

0 on success, -EINVAL if line is invalid