sbl::core::hal::interrupts Namespace Reference

Typedefs
using	Handler = void(*)()
	Interrupt handler function type.

Enumerations
enum class	Priority : uint8_t {   Highest = 0 , High = 4 , Medium = 8 , Low = 12 ,   Lowest = 15 }
	Interrupt priority levels for ARM Cortex-M. More...
enum class	Trigger : uint8_t {   Rising , Falling , Change , Low ,   High }
	External interrupt trigger types. More...

Functions
uint32_t	disable_and_save ()
	Disable ARM interrupts and return previous state.
void	restore (uint32_t saved_state)
	Restore ARM interrupt state.
uint32_t	get_state ()
	Get current ARM interrupt state.
bool	are_enabled ()
	Check if ARM interrupts are enabled.

Typedef Documentation

Handler

using sbl::core::hal::interrupts::Handler = typedef void(*)()

Interrupt handler function type.

Keep interrupt handlers fast and minimal. Avoid blocking operations in ISR context.

Definition at line 51 of file types.hpp.

Enumeration Type Documentation

Priority

enum class sbl::core::hal::interrupts::Priority : uint8_t

strong

Interrupt priority levels for ARM Cortex-M.

ARM Cortex-M uses lower numerical values for higher priority. These values map directly to ARM NVIC priority levels.

Enumerator
Highest	Highest priority (0)
High	High priority
Medium	Medium priority.
Low	Low priority.
Lowest	Lowest priority (15)

Definition at line 26 of file types.hpp.

Trigger

enum class sbl::core::hal::interrupts::Trigger : uint8_t

strong

External interrupt trigger types.

Enumerator
Rising	Rising edge trigger.
Falling	Falling edge trigger
Change	Any edge (rising or falling)
Low	Low level trigger.
High	High level trigger.

Definition at line 37 of file types.hpp.

Function Documentation

are_enabled()

bool sbl::core::hal::interrupts::are_enabled ( )

inline

Check if ARM interrupts are enabled.

Returns

true if interrupts enabled, false if disabled

Definition at line 73 of file control.hpp.

References __get_PRIMASK.

disable_and_save()

uint32_t sbl::core::hal::interrupts::disable_and_save ( )

inline

Disable ARM interrupts and return previous state.

Disables all interrupts (except NMI/Hard Fault) using ARM PRIMASK register. Returns previous PRIMASK state for later restoration.

Returns

Previous PRIMASK register value

Definition at line 41 of file control.hpp.

References __disable_irq, and __get_PRIMASK.

get_state()

uint32_t sbl::core::hal::interrupts::get_state ( )

inline

Get current ARM interrupt state.

Returns

Current PRIMASK register value (0 = enabled, 1 = disabled)

Definition at line 64 of file control.hpp.

References __get_PRIMASK.

restore()

void sbl::core::hal::interrupts::restore ( uint32_t  saved_state )

inline

Restore ARM interrupt state.

Restores PRIMASK register to specified state. Typically used with value returned from disable_and_save().

Parameters

saved_state

Previous PRIMASK value to restore

Definition at line 55 of file control.hpp.

References __set_PRIMASK.

Referenced by sbl::core::patterns::synchronization::CriticalSection::~CriticalSection().

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