fl::isr Namespace Reference

Classes
struct	config
	Configuration for ISR attachment. More...
class	critical_section
	RAII helper for critical sections (interrupt disable/enable) Automatically disables interrupts on construction and enables on destruction. More...
struct	handle
	Opaque handle to an attached ISR. More...

Typedefs
using	CriticalSection = critical_section
typedef void(*	handler_fn) (void *user_data)
	ISR handler function signature.
using	isr_config_t = config
using	isr_handle_t = handle
using	isr_handler_t = handler_fn

Functions
int	attach_external_handler (u8 pin, const config &cfg, handle *out_handle=nullptr)
	Attach an external interrupt handler (GPIO-based).
int	attach_timer_handler (const config &cfg, handle *out_handle=nullptr)
	Attach a timer-based ISR handler.
int	detach_handler (handle &h)
	Detach an ISR handler.
int	disable_handler (handle &h)
	Disable an ISR temporarily (without detaching).
int	enable_handler (handle &h)
	Enable an ISR (after temporary disable).
const char *	get_error_string (int error_code)
	Get platform-specific error description.
u8	get_max_priority ()
	Get the maximum priority level supported by this platform.
u32	get_max_timer_frequency ()
	Get the maximum timer frequency supported by this platform.
u32	get_min_timer_frequency ()
	Get the minimum timer frequency supported by this platform.
const char *	get_platform_name ()
	Get the platform name.
FASTLED_FORCE_INLINE bool	is_aligned (const void *ptr, size_t alignment)
	Check if a pointer is aligned to a specific byte boundary.
bool	is_handler_enabled (const handle &h)
	Query if an ISR is currently enabled.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memcpy (void *FL_RESTRICT_PARAM dst, const void *FL_RESTRICT_PARAM src, size_t num_bytes)
	ISR-optimized memcpy with alignment detection and switch dispatch.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memcpy_16 (u16 *FL_RESTRICT_PARAM dst, const u16 *FL_RESTRICT_PARAM src, size_t count)
	ISR-optimized 16-bit block copy for 2-byte aligned memory.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memcpy_32 (u32 *FL_RESTRICT_PARAM dst, const u32 *FL_RESTRICT_PARAM src, size_t count)
	ISR-optimized 32-bit block copy for 4-byte aligned memory.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memcpy_byte (u8 *FL_RESTRICT_PARAM dst, const u8 *FL_RESTRICT_PARAM src, size_t count)
	ISR-optimized byte copy.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memset_zero (u8 *dest, size_t count)
	ISR-safe memset with alignment optimization.
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memset_zero_byte (u8 *dest, size_t count)
	ISR-safe memset replacement (byte-by-byte zero)
FL_OPTIMIZE_FUNCTION FL_IRAM FASTLED_FORCE_INLINE void	memset_zero_word (u8 *dest, size_t count)
	ISR-safe word-aligned memset (4-byte writes)
bool	requires_assembly_handler (u8 priority)
	Check if assembly is required for a given priority level.

Variables
constexpr u32	ISR_FLAG_EDGE_FALLING = (1u << 2)
constexpr u32	ISR_FLAG_EDGE_RISING = (1u << 1)
constexpr u32	ISR_FLAG_ESP_LOWMED = (1ul << 17)
constexpr u32	ISR_FLAG_ESP_SHARED = (1ul << 16)
constexpr u32	ISR_FLAG_IRAM_SAFE = (1u << 0)
constexpr u32	ISR_FLAG_LEVEL_HIGH = (1u << 3)
constexpr u32	ISR_FLAG_LEVEL_LOW = (1u << 4)
constexpr u32	ISR_FLAG_MANUAL_TICK = (1u << 6)
constexpr u32	ISR_FLAG_ONE_SHOT = (1u << 5)
constexpr u32	ISR_FLAG_STM32_PREEMPT = (1ul << 18)
constexpr u8	ISR_PRIORITY_CRITICAL = 4
constexpr u8	ISR_PRIORITY_DEFAULT = 1
constexpr u8	ISR_PRIORITY_HIGH = 3
constexpr u8	ISR_PRIORITY_LOW = 1
constexpr u8	ISR_PRIORITY_MAX = 7
constexpr u8	ISR_PRIORITY_MEDIUM = 2