pio_handler.h File Reference

Parallel Input/Output (PIO) interrupt handler for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

Functions
void	pio_handler_process (Pio *p_pio, uint32_t ul_id)
	Process an interrupt request on the given PIO controller. More...
uint32_t	pio_handler_set (Pio *p_pio, uint32_t ul_id, uint32_t ul_mask, uint32_t ul_attr, void(*p_handler)(uint32_t, uint32_t))
	Set an interrupt handler for the provided pins. More...
uint32_t	pio_handler_set_pin (uint32_t ul_pin, uint32_t ul_flag, void(*p_handler)(uint32_t, uint32_t))
void	pio_handler_set_priority (Pio *p_pio, IRQn_Type ul_irqn, uint32_t ul_priority)
	Initialize PIO interrupt management logic. More...

void pio_handler_process	(	Pio *	p_pio,
		uint32_t	ul_id
	)

Process an interrupt request on the given PIO controller.

Parameters

p_pio	PIO controller base address.
ul_id	PIO controller ID.

References gs_interrupt_sources, s_interrupt_source::handler, s_interrupt_source::mask, MAX_INTERRUPT_SOURCES, pio_get_interrupt_mask(), and pio_get_interrupt_status().

uint32_t pio_handler_set	(	Pio *	p_pio,
		uint32_t	ul_id,
		uint32_t	ul_mask,
		uint32_t	ul_attr,
		void(*)(uint32_t, uint32_t)	p_handler
	)

Set an interrupt handler for the provided pins.

The provided handler will be called with the triggering pin as its parameter as soon as an interrupt is detected.

Parameters

p_pio	PIO controller base address.
ul_id	PIO ID.
ul_mask	Pins (bit mask) to configure.
ul_attr	Pins attribute to configure.
p_handler	Interrupt handler function pointer.

Returns

0 if successful, 1 if the maximum number of sources has been defined.

References s_interrupt_source::attr, gs_interrupt_sources, gs_ul_nb_sources, s_interrupt_source::handler, s_interrupt_source::id, s_interrupt_source::mask, MAX_INTERRUPT_SOURCES, and pio_configure_interrupt().

Referenced by extint_initialize().

uint32_t pio_handler_set_pin	(	uint32_t	ul_pin,
		uint32_t	ul_flag,
		void(*)(uint32_t, uint32_t)	p_handler
	)

void pio_handler_set_priority	(	Pio *	p_pio,
		IRQn_Type	ul_irqn,
		uint32_t	ul_priority
	)

Initialize PIO interrupt management logic.

Parameters

p_pio	PIO controller base address.
ul_irqn	NVIC line number.
ul_priority	PIO controller interrupts priority.

References pio_disable_interrupt(), pio_enable_interrupt(), pio_get_interrupt_mask(), and pio_get_interrupt_status().

Referenced by extint_initialize().