irq.h File Reference

#include "pico.h"
#include "hardware/address_mapped.h"
#include "hardware/regs/intctrl.h"
#include "pico/platform/cpu_regs.h"

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Macros
#define	PICO_MAX_SHARED_IRQ_HANDLERS   4
#define	PICO_DISABLE_SHARED_IRQ_HANDLERS   0
#define	PICO_VTABLE_PER_CORE   0
#define	PICO_DEFAULT_IRQ_PRIORITY   0x80
#define	PICO_LOWEST_IRQ_PRIORITY   0xff
#define	PICO_HIGHEST_IRQ_PRIORITY   0x00
#define	PICO_SHARED_IRQ_HANDLER_DEFAULT_ORDER_PRIORITY   0x80
#define	PICO_SHARED_IRQ_HANDLER_HIGHEST_ORDER_PRIORITY   0xff
#define	PICO_SHARED_IRQ_HANDLER_LOWEST_ORDER_PRIORITY   0x00
#define	PARAM_ASSERTIONS_ENABLED_HARDWARE_IRQ   0

Typedefs
typedef void(*	irq_handler_t) (void)
	Interrupt handler function type.

Functions
static void	check_irq_param (__unused uint num)
void	irq_set_priority (uint num, uint8_t hardware_priority)
	Set specified interrupt's priority.
uint	irq_get_priority (uint num)
	Get specified interrupt's priority.
void	irq_set_enabled (uint num, bool enabled)
	Enable or disable a specific interrupt on the executing core.
bool	irq_is_enabled (uint num)
	Determine if a specific interrupt is enabled on the executing core.
void	irq_set_mask_enabled (uint32_t mask, bool enabled)
	Enable/disable multiple interrupts on the executing core.
void	irq_set_mask_n_enabled (uint n, uint32_t mask, bool enabled)
	Enable/disable multiple interrupts on the executing core.
void	irq_set_exclusive_handler (uint num, irq_handler_t handler)
	Set an exclusive interrupt handler for an interrupt on the executing core.
irq_handler_t	irq_get_exclusive_handler (uint num)
	Get the exclusive interrupt handler for an interrupt on the executing core.
void	irq_add_shared_handler (uint num, irq_handler_t handler, uint8_t order_priority)
	Add a shared interrupt handler for an interrupt on the executing core.
void	irq_remove_handler (uint num, irq_handler_t handler)
	Remove a specific interrupt handler for the given irq number on the executing core.
bool	irq_has_handler (uint num)
	Determine if there is an installed IRQ handler for the given interrupt number.
bool	irq_has_shared_handler (uint num)
	Determine if the current IRQ andler for the given interrupt number is shared.
irq_handler_t	irq_get_vtable_handler (uint num)
	Get the current IRQ handler for the specified IRQ from the currently installed hardware vector table (VTOR) of the execution core.
static void	irq_clear (uint int_num)
	Clear a specific interrupt on the executing core.
void	irq_set_pending (uint num)
	Force an interrupt to be pending on the executing core.
void	runtime_init_per_core_irq_priorities (void)
	Perform IRQ priority initialization for the current core.
static __force_inline void	irq_init_priorities (void)
void	user_irq_claim (uint irq_num)
	Claim ownership of a user IRQ on the calling core.
void	user_irq_unclaim (uint irq_num)
	Mark a user IRQ as no longer used on the calling core.
int	user_irq_claim_unused (bool required)
	Claim ownership of a free user IRQ on the calling core.
bool	user_irq_is_claimed (uint irq_num)
void	__unhandled_user_irq (void)

Function Documentation

runtime_init_per_core_irq_priorities()

void runtime_init_per_core_irq_priorities

(

void

)

Perform IRQ priority initialization for the current core.

Note

This is an internal method and user should generally not call it.