External interrupts

GPIO edge interrupts. More...

Typedefs
typedef void(*	ExtiHandlerCallback) (void)
	Interrupt handler, called in ISR context.

Enumerations
enum	ExtiTrigger { ExtiTrigger_Rising , ExtiTrigger_Falling , ExtiTrigger_RisingFalling }
	Edge that triggers the interrupt. More...

Functions
void	exti_enable (ExtiConfig config)
	Enable the interrupt of a configured pin.
void	exti_disable (ExtiConfig config)
	Disable the interrupt of a pin.
void	exti_configure_pin (ExtiConfig cfg, ExtiTrigger trigger, ExtiHandlerCallback cb)
	Configure a pin as an interrupt source and register its handler.

Detailed Description

GPIO edge interrupts.

The pin is described by the board's ExtiConfig.

static void prv_int_handler(void) {
  system_task_add_callback_from_isr(prv_handle_int, NULL);
}
 
exti_configure_pin(dev->int_exti, ExtiTrigger_Falling, prv_int_handler);
exti_enable(dev->int_exti);

Typedef Documentation

ExtiHandlerCallback

typedef void(* ExtiHandlerCallback) (void)

Interrupt handler, called in ISR context.

Enumeration Type Documentation

ExtiTrigger

enum ExtiTrigger

Edge that triggers the interrupt.

Enumerator
ExtiTrigger_Rising	Rising edge.
ExtiTrigger_Falling	Falling edge.
ExtiTrigger_RisingFalling	Both edges.

Function Documentation

exti_configure_pin()

void exti_configure_pin	(	ExtiConfig	cfg,
		ExtiTrigger	trigger,
		ExtiHandlerCallback	cb
	)

Configure a pin as an interrupt source and register its handler.

The interrupt is delivered once enabled with exti_enable().

Parameters

cfg	Pin to configure.
trigger	Edge that triggers the interrupt.
cb	Handler, called in ISR context.

exti_disable()

void exti_disable

(

ExtiConfig

config

)

Disable the interrupt of a pin.

Parameters

config

Pin configured with exti_configure_pin().

exti_enable()

void exti_enable

(

ExtiConfig

config

)

Enable the interrupt of a configured pin.

Parameters

config

Pin configured with exti_configure_pin().