Cortex-M NVIC Defines

libopencm3 Cortex Nested Vectored Interrupt Controller More...

Collaboration diagram for Cortex-M NVIC Defines:

Modules
	NVIC Registers
	Cortex M0/M3/M4 System Interrupts
	IRQ numbers -3 and -6 to -9 are reserved.
	User interrupts for STM32 L4 series

Functions
void	nvic_enable_irq (uint8_t irqn)
	NVIC Enable Interrupt. More...
void	nvic_disable_irq (uint8_t irqn)
	NVIC Disable Interrupt. More...
uint8_t	nvic_get_pending_irq (uint8_t irqn)
	NVIC Return Pending Interrupt. More...
void	nvic_set_pending_irq (uint8_t irqn)
	NVIC Set Pending Interrupt. More...
void	nvic_clear_pending_irq (uint8_t irqn)
	NVIC Clear Pending Interrupt. More...
uint8_t	nvic_get_irq_enabled (uint8_t irqn)
	NVIC Return Enabled Interrupt. More...
void	nvic_set_priority (uint8_t irqn, uint8_t priority)
	NVIC Set Interrupt Priority. More...
uint8_t	nvic_get_active_irq (uint8_t irqn)
	NVIC Return Active Interrupt. More...
void	nvic_generate_software_interrupt (uint16_t irqn)
	NVIC Software Trigger Interrupt. More...
void	reset_handler (void)
void	nmi_handler (void)
void	hard_fault_handler (void)
void	sv_call_handler (void)
void	pend_sv_handler (void)
void	sys_tick_handler (void)
void	mem_manage_handler (void)
void	bus_fault_handler (void)
void	usage_fault_handler (void)
void	debug_monitor_handler (void)

Detailed Description

libopencm3 Cortex Nested Vectored Interrupt Controller

Version

1.0.0

Author

© 2010 Piotr Esden-Tempski piotr.nosp@m.@esd.nosp@m.en.ne.nosp@m.t

Date

18 August 2012

LGPL License Terms libopencm3 License

Function Documentation

bus_fault_handler()

void bus_fault_handler

(

void

)

debug_monitor_handler()

void debug_monitor_handler

(

void

)

hard_fault_handler()

void hard_fault_handler

(

void

)

mem_manage_handler()

void mem_manage_handler

(

void

)

nmi_handler()

void nmi_handler

(

void

)

nvic_clear_pending_irq()

void nvic_clear_pending_irq

(

uint8_t

irqn

)

NVIC Clear Pending Interrupt.

Force remove a user interrupt from a pending state. This has no effect if the interrupt is actively being serviced.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Definition at line 112 of file nvic.c.

References NVIC_ICPR.

nvic_disable_irq()

void nvic_disable_irq

(

uint8_t

irqn

)

NVIC Disable Interrupt.

Disables a user interrupt.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Definition at line 70 of file nvic.c.

References NVIC_ICER.

nvic_enable_irq()

void nvic_enable_irq

(

uint8_t

irqn

)

NVIC Enable Interrupt.

Enables a user interrupt.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Definition at line 57 of file nvic.c.

References NVIC_ISER.

nvic_generate_software_interrupt()

void nvic_generate_software_interrupt

(

uint16_t

irqn

)

NVIC Software Trigger Interrupt.

Generate an interrupt from software. This has no effect for unprivileged access unless the privilege level has been elevated through the System Control Registers.

Parameters

[in]

irqn

Unsigned int16. Interrupt number (0 ... 239)

Definition at line 209 of file nvic.c.

References NVIC_STIR.

nvic_get_active_irq()

uint8_t nvic_get_active_irq

(

uint8_t

irqn

)

NVIC Return Active Interrupt.

Interrupt has occurred and is currently being serviced.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Returns

Boolean. Interrupt active.

Definition at line 194 of file nvic.c.

References NVIC_IABR.

nvic_get_irq_enabled()

uint8_t nvic_get_irq_enabled

(

uint8_t

irqn

)

NVIC Return Enabled Interrupt.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Returns

Boolean. Interrupt enabled.

Definition at line 126 of file nvic.c.

References NVIC_ISER.

nvic_get_pending_irq()

uint8_t nvic_get_pending_irq

(

uint8_t

irqn

)

NVIC Return Pending Interrupt.

True if the interrupt has occurred and is waiting for service.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Returns

Boolean. Interrupt pending.

Definition at line 84 of file nvic.c.

References NVIC_ISPR.

nvic_set_pending_irq()

void nvic_set_pending_irq

(

uint8_t

irqn

)

NVIC Set Pending Interrupt.

Force a user interrupt to a pending state. This has no effect if the interrupt is already pending.

Parameters

[in]

irqn

Unsigned int8. Interrupt number User interrupts for STM32 L4 series

Definition at line 98 of file nvic.c.

References NVIC_ISPR.

nvic_set_priority()

void nvic_set_priority	(	uint8_t	irqn,
		uint8_t	priority
	)

NVIC Set Interrupt Priority.

There are 16 priority levels only, given by the upper four bits of the priority byte, as required by ARM standards. The priority levels are interpreted according to the pre-emptive priority grouping set in the SCB Application Interrupt and Reset Control Register (SCB_AIRCR), as done in scb_set_priority_grouping,

Parameters

[in]	irqn	Interrupt number User interrupts for STM32 L4 series
[in]	priority	Interrupt priority (0 ... 255 in steps of 16)

Definition at line 152 of file nvic.c.

References NVIC_IPR, NVIC_IRQ_COUNT, and SCB_SHPR.

pend_sv_handler()

void pend_sv_handler

(

void

)

reset_handler()

void reset_handler

(

void

)

Definition at line 62 of file vector.c.

References __fini_array_end, __fini_array_start, __init_array_end, __init_array_start, __preinit_array_end, __preinit_array_start, _data, _data_loadaddr, _ebss, _edata, main(), pre_main(), SCB_CCR, and SCB_CCR_STKALIGN.

Here is the call graph for this function:

sv_call_handler()

void sv_call_handler

(

void

)

sys_tick_handler()

void sys_tick_handler

(

void

)

usage_fault_handler()

void usage_fault_handler

(

void

)