ih_at91sys.c File Reference

#include <arch/arm.h>
#include <dev/irqreg.h>

Include dependency graph for ih_at91sys.c:

Defines
#define	NUT_IRQPRI_SYS   0
Functions
int	NutSysIrqEnable (SYSIRQ_HANDLER *sysirq)
	Enable a specified system interrupt.
int	NutSysIrqDisable (SYSIRQ_HANDLER *sysirq)
	Disable a specified system interrupt.
int	NutRegisterSysIrqHandler (SYSIRQ_HANDLER *sysirq, void(*handler)(void *), void *arg)
	Register a system interrupt handler.
Variables
SYSIRQ_HANDLER	syssig_DBGU
SYSIRQ_HANDLER	syssig_MC
SYSIRQ_HANDLER	syssig_PIT
SYSIRQ_HANDLER	syssig_PMC
SYSIRQ_HANDLER	syssig_RSTC
SYSIRQ_HANDLER	syssig_RTT
SYSIRQ_HANDLER	syssig_WDT
IRQ_HANDLER	sig_SYS

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Define Documentation

#define NUT_IRQPRI_SYS   0

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Function Documentation

int NutSysIrqEnable

(

SYSIRQ_HANDLER *

sysirq

)

Enable a specified system interrupt.

Parameters:

sysirq

Interrupt to enable.

Returns:

0 on success, -1 otherwise.

References NULL, and NUT_IRQCTL_ENABLE.

Referenced by NutRegisterTimer().

int NutSysIrqDisable

(

SYSIRQ_HANDLER *

sysirq

)

Disable a specified system interrupt.

Parameters:

sysirq

Interrupt to disable.

Returns:

0 on success, -1 otherwise.

Referenced by NutRegisterSysIrqHandler().

int NutRegisterSysIrqHandler	(	SYSIRQ_HANDLER *	sysirq,
		void(*)(void *)	handler,
		void *	arg
	)

Register a system interrupt handler.

This call will also disable any previously registered handler.

If enabled with NutSysIrqEnable(), the registered handler will be called on every system interrupt. The handler must check, if the interrupt was triggered by the corresponding device.

This function is typically called by device drivers, but applications may also implement their local interrupt handlers.

Parameters:

irq	Interrupt to be associated with this handler.
handler	This routine will be called by Nut/OS, when the specified interrupt occurs.
arg	Argument to be passed to the interrupt handler.

Returns:

0 on success, -1 otherwise.

References NULL, NUT_IRQCTL_INIT, NutSysIrqDisable(), and rc.

Referenced by NutRegisterTimer().

Here is the call graph for this function:

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Variable Documentation

SYSIRQ_HANDLER syssig_DBGU

SYSIRQ_HANDLER syssig_MC

SYSIRQ_HANDLER syssig_PIT

Referenced by NutRegisterTimer().

SYSIRQ_HANDLER syssig_PMC

SYSIRQ_HANDLER syssig_RSTC

SYSIRQ_HANDLER syssig_RTT

SYSIRQ_HANDLER syssig_WDT

IRQ_HANDLER sig_SYS

Initial value:

 {



    NULL,               
    NULL,               
    SystemIrqCtl 
}