Interrupt Support

Modules
	Interrupt_deprecated_group

Interrupt Service Routine definition
typedef uint32_t	irqflags_t
volatile bool	g_interrupt_enabled
#define	irq_initialize_vectors()
	Initialize interrupt vectors.
#define	irq_register_handler(int_num, int_prio)
	Register handler for interrupt.
#define	cpu_irq_enable()
#define	cpu_irq_disable()
#define	cpu_irq_is_enabled()   (__get_PRIMASK() == 0)
#define	Enable_global_interrupt()   cpu_irq_enable()
#define	Disable_global_interrupt()   cpu_irq_disable()
#define	Is_global_interrupt_enabled()   cpu_irq_is_enabled()

Detailed Description

Macro Definition Documentation

cpu_irq_disable

#define cpu_irq_disable

(

)

Value:

    do {                                       \
        __disable_irq();                       \
        __DMB();                               \
        /*g_interrupt_enabled = false; */          \
    } while (0)

cpu_irq_enable

#define cpu_irq_enable

(

)

Value:

    do {                                       \
        /*g_interrupt_enabled = true; */           \
        __DMB();                               \
        __enable_irq();                        \
    } while (0)

irq_initialize_vectors

#define irq_initialize_vectors

(

)

Value:

    do {                             \
    } while (0)

Initialize interrupt vectors.

For NVIC the interrupt vectors are put in vector table. So nothing to do to initialize them, except defined the vector function with right name.

This must be called prior to irq_register_handler.

irq_register_handler

#define irq_register_handler	(		int_num,
			int_prio
	)

Value:

    NVIC_ClearPendingIRQ((IRQn_Type)int_num);                      \
    NVIC_SetPriority((IRQn_Type)int_num, int_prio);                \
    NVIC_EnableIRQ((IRQn_Type)int_num);                          \

Register handler for interrupt.

For NVIC the interrupt vectors are put in vector table. So nothing to do to register them, except defined the vector function with right name.

Usage:

irq_initialize_vectors();
irq_register_handler(foo_irq_handler);

Note

The function func must be defined with the ISR macro.

The functions prototypes can be found in the device exception header files (exceptions.h).