Global interrupt management

This is a driver for global enabling and disabling of interrupts.

Modules
	Deprecated interrupt definitions

Macros
#define	CONFIG_INTERRUPT_FORCE_INTC
	Force usage of the ASF INTC driver. More...
#define	irq_initialize_vectors()   PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
	Initialize interrupt vectors Enables all interrupt levels, with vectors located in the application section and fixed priority scheduling. More...
#define	ISR(vect)
	Define service routine for specified interrupt vector. More...

Global interrupt flags
typedef uint8_t	irqflags_t
	Type used for holding state of interrupt flag. More...
static irqflags_t	cpu_irq_save (void)
	Get and clear the global interrupt flags. More...
static void	cpu_irq_restore (irqflags_t flags)
	Restore global interrupt flags. More...
static bool	cpu_irq_is_enabled_flags (irqflags_t flags)
	Check if interrupts are globally enabled in supplied flags. More...
#define	cpu_irq_enable()   sei()
	Enable interrupts globally. More...
#define	cpu_irq_disable()   cli()
	Disable interrupts globally. More...
#define	cpu_irq_is_enabled()   cpu_irq_is_enabled_flags(SREG)
	Check if interrupts are globally enabled. More...

#define CONFIG_INTERRUPT_FORCE_INTC

Force usage of the ASF INTC driver.

Predefine this symbol when preprocessing to force the use of the ASF INTC driver. This is useful to ensure compatibility across compilers and shall be used only when required by the application needs.

#define cpu_irq_disable

(

)

cli()

Disable interrupts globally.

Referenced by cpu_irq_save().

#define cpu_irq_enable

(

)

sei()

Enable interrupts globally.

Referenced by twi_master_init().

#define cpu_irq_is_enabled

(

)

cpu_irq_is_enabled_flags(SREG)

Check if interrupts are globally enabled.

Returns

True if interrupts are enabled.

#define irq_initialize_vectors

(

)

PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;

Initialize interrupt vectors Enables all interrupt levels, with vectors located in the application section and fixed priority scheduling.

Referenced by main().

#define ISR

(

vect

)

Define service routine for specified interrupt vector.

Usage:

ISR(FOO_vect)
{
    ...
}

Parameters

vect	Interrupt vector name as found in the device header files.

irqflags_t

Type used for holding state of interrupt flag.

bool cpu_irq_is_enabled_flags ( irqflags_t  flags )

inlinestatic

Check if interrupts are globally enabled in supplied flags.

Parameters

flags

Currents state of interrupt flags.

Returns

True if interrupts are enabled.

void cpu_irq_restore ( irqflags_t  flags )

inlinestatic

Restore global interrupt flags.

Use in conjunction with cpu_irq_save.

Parameters

flags

State to set interrupt flag to.

References barrier.

Referenced by arch_ioport_disable_pin(), arch_ioport_disable_port(), arch_ioport_enable_pin(), arch_ioport_enable_port(), arch_ioport_set_pin_mode(), arch_ioport_set_pin_sense_mode(), arch_ioport_set_port_mode(), arch_ioport_set_port_sense_mode(), osc_disable(), osc_enable_autocalibration(), osc_enable_external(), osc_enable_internal(), pll_disable(), pll_enable(), sysclk_disable_module(), sysclk_enable_module(), and twim_acquire().

irqflags_t cpu_irq_save ( void  )

inlinestatic

Get and clear the global interrupt flags.

Use in conjunction with cpu_irq_restore.

Returns

Current state of interrupt flags.

Note

This function leaves interrupts disabled.

References cpu_irq_disable.

Referenced by arch_ioport_disable_pin(), arch_ioport_disable_port(), arch_ioport_enable_pin(), arch_ioport_enable_port(), arch_ioport_set_pin_mode(), arch_ioport_set_pin_sense_mode(), arch_ioport_set_port_mode(), arch_ioport_set_port_sense_mode(), osc_disable(), osc_enable_autocalibration(), osc_enable_external(), osc_enable_internal(), pll_disable(), pll_enable(), sysclk_disable_module(), sysclk_enable_module(), and twim_acquire().