Functions
static _Bool	arch_is_in_isr (void)
	Test if the current context is in interrupt context.

static unsigned int	arch_irq_lock (void)
	Lock interrupts on the current CPU.

static void	arch_irq_unlock (unsigned int key)
	Unlock interrupts on the current CPU.

static bool	arch_irq_unlocked (unsigned int key)
	Test if calling arch_irq_unlock() with this key would unlock irqs.

void	arch_irq_disable (unsigned int irq)
	Disable the specified interrupt line.

void	arch_irq_enable (unsigned int irq)
	Enable the specified interrupt line.

int	arch_irq_is_enabled (unsigned int irq)
	Test if an interrupt line is enabled.

int	arch_irq_connect_dynamic (unsigned int irq, unsigned int priority, void(routine)(const void parameter), const void *parameter, uint32_t flags)
	Arch-specific hook to install a dynamic interrupt.

int	arch_irq_disconnect_dynamic (unsigned int irq, unsigned int priority, void(routine)(const void parameter), const void *parameter, uint32_t flags)
	Arch-specific hook to dynamically uninstall a shared interrupt.

unsigned int	arch_irq_allocate (void)
	Arch-specific hook for allocating IRQs.

void	arch_irq_set_used (unsigned int irq)
	Arch-specific hook for declaring an IRQ being used.

bool	arch_irq_is_used (unsigned int irq)
	Arch-specific hook for checking if an IRQ is being used already.

Detailed Description

Function Documentation

◆ arch_irq_allocate()

unsigned int arch_irq_allocate ( void )

#include <zephyr/arch/arch_interface.h>

Arch-specific hook for allocating IRQs.

Note: disable/enable IRQ relevantly inside the implementation of such function to avoid concurrency issues. Also, an allocated IRQ is assumed to be used thus a following

See also: arch_irq_is_used() should return true.

Returns: The newly allocated IRQ or UINT_MAX on error.

◆ arch_irq_connect_dynamic()

int arch_irq_connect_dynamic	(	unsigned int	irq,
		unsigned int	priority,
		void(*	routine )(const void *parameter),
		const void *	parameter,
		uint32_t	flags )

#include <zephyr/arch/arch_interface.h>

Arch-specific hook to install a dynamic interrupt.

Parameters

irq	IRQ line number
priority	Interrupt priority
routine	Interrupt service routine
parameter	ISR parameter
flags	Arch-specific IRQ configuration flag

Returns: The vector assigned to this interrupt

◆ arch_irq_disable()

void arch_irq_disable ( unsigned int irq )

#include <zephyr/arch/arch_interface.h>

Disable the specified interrupt line.

Note: : The behavior of interrupts that arrive after this call returns and before the corresponding call to arch_irq_enable() is undefined. The hardware is not required to latch and deliver such an interrupt, though on some architectures that may work. Other architectures will simply lose such an interrupt and never deliver it. Many drivers and subsystems are not tolerant of such dropped interrupts and it is the job of the application layer to ensure that behavior remains correct.

See also: irq_disable()

◆ arch_irq_disconnect_dynamic()

int arch_irq_disconnect_dynamic	(	unsigned int	irq,
		unsigned int	priority,
		void(*	routine )(const void *parameter),
		const void *	parameter,
		uint32_t	flags )