sync.h File Reference

#include "pico.h"
#include "hardware/address_mapped.h"
#include "hardware/sync/spin_lock.h"

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Macros
#define	PARAM_ASSERTIONS_ENABLED_HARDWARE_SYNC   0
#define	remove_volatile_cast(t, x)
#define	remove_volatile_cast_no_barrier(t, x)

Functions
static __force_inline void	__nop (void)
	Insert a NOP instruction in to the code path.
static __force_inline void	__sev (void)
	Insert a SEV instruction in to the code path.
static __force_inline void	__wfe (void)
	Insert a WFE instruction in to the code path.
static __force_inline void	__wfi (void)
	Insert a WFI instruction in to the code path.
static __force_inline void	__dmb (void)
	Insert a DMB instruction in to the code path.
static __force_inline void	__dsb (void)
	Insert a DSB instruction in to the code path.
static __force_inline void	__isb (void)
	Insert a ISB instruction in to the code path.
static __force_inline void	__mem_fence_acquire (void)
	Acquire a memory fence.
static __force_inline void	__mem_fence_release (void)
	Release a memory fence.
static __force_inline void	disable_interrupts (void)
	Explicitly disable interrupts on the calling core.
static __force_inline void	enable_interrupts (void)
	Explicitly enable interrupts on the calling core.
static __force_inline uint32_t	save_and_disable_interrupts (void)
	Disable interrupts on the calling core, returning the previous interrupt state.
static __force_inline void	restore_interrupts (uint32_t status)
	Restore interrupts to a specified state on the calling core.
static __force_inline void	restore_interrupts_from_disabled (uint32_t status)
	Restore interrupts to a specified state on the calling core with restricted transitions.
uint	next_striped_spin_lock_num (void)
	Return a spin lock number from the striped range.
void	spin_lock_claim (uint lock_num)
	Mark a spin lock as used.
void	spin_lock_claim_mask (uint32_t lock_num_mask)
	Mark multiple spin locks as used.
void	spin_lock_unclaim (uint lock_num)
	Mark a spin lock as no longer used.
int	spin_lock_claim_unused (bool required)
	Claim a free spin lock.
bool	spin_lock_is_claimed (uint lock_num)
	Determine if a spin lock is claimed.

Macro Definition Documentation

remove_volatile_cast

#define remove_volatile_cast	(		t,
			x )

Value:

({__compiler_memory_barrier(); Clang_Pragma("clang diagnostic push"); Clang_Pragma("clang diagnostic ignored \"-Wcast-qual\""); (t)(x); Clang_Pragma("clang diagnostic pop"); })

remove_volatile_cast_no_barrier

#define remove_volatile_cast_no_barrier	(		t,
			x )

Value:

({ Clang_Pragma("clang diagnostic push"); Clang_Pragma("clang diagnostic ignored \"-Wcast-qual\""); (t)(x); Clang_Pragma("clang diagnostic pop"); })