Detailed Description

Utility functions and classes for managing delay cycles.

#include "FastLED.h"

Classes
class	CMinWait< WAIT >
	Class to ensure that a minimum amount of time has kicked since the last time run - and delay if not enough time has passed yet. More...

Macros
Some timing related macros/definitions
#define	F_CPU_MHZ (F_CPU / 1000000L)
	CPU speed, in megahertz (MHz)

#define	NS(_NS) (((_NS * F_CPU_MHZ) + 999) / 1000)
	Convert from nanoseconds to number of clock cycles.

#define	CLKS_TO_MICROS(_CLKS) ((long)(_CLKS)) / (F_CPU / 1000000L)
	Convert from number of clock cycles to microseconds.

#define	NO_TIME(A, B, C) (NS(A) < 3 \|\| NS(B) < 3 \|\| NS(C) < 6)
	Macro for making sure there's enough time available.

Clock cycle counted delay loop
#define	FL_NOP __asm__ __volatile__ ("nop\n");
	Single no operation ("no-op") instruction for delay.

#define	FL_NOP2 __asm__ __volatile__ ("nop\n\t nop\n");
	Double no operation ("no-op") instruction for delay.

template<int CYCLES>
void	delaycycles ()
	Delay N clock cycles.

template<int CYCLES>
void	delaycycles_min1 ()
	A variant of delaycycles that will always delay at least one cycle.

Macro Definition Documentation

◆ CLKS_TO_MICROS

#define CLKS_TO_MICROS ( _CLKS ) ((long)(_CLKS)) / (F_CPU / 1000000L)

Convert from number of clock cycles to microseconds.

Definition at line 175 of file fastled_delay.h.

◆ F_CPU_MHZ

#define F_CPU_MHZ (F_CPU / 1000000L)

CPU speed, in megahertz (MHz)

Definition at line 168 of file fastled_delay.h.

◆ FL_NOP

#define FL_NOP __asm__ __volatile__ ("nop\n");

Single no operation ("no-op") instruction for delay.

Definition at line 68 of file fastled_delay.h.

◆ FL_NOP2

#define FL_NOP2 __asm__ __volatile__ ("nop\n\t nop\n");

Double no operation ("no-op") instruction for delay.

Definition at line 70 of file fastled_delay.h.

◆ NO_TIME

#define NO_TIME	(	A,
		B,
		C
	)	(NS(A) < 3 \|\| NS(B) < 3 \|\| NS(C) < 6)

Macro for making sure there's enough time available.

Definition at line 178 of file fastled_delay.h.

◆ NS

#define NS ( _NS ) (((_NS * F_CPU_MHZ) + 999) / 1000)

Convert from nanoseconds to number of clock cycles.

Definition at line 173 of file fastled_delay.h.

Function Documentation

◆ delaycycles()

template<int CYCLES>

void delaycycles ( )

inline

Delay N clock cycles.

Template Parameters

CYCLES the number of clock cycles to delay

Note: No delay is applied if CYCLES is less than or equal to zero.

Definition at line 129 of file fastled_delay.h.

◆ delaycycles_min1()

template<int CYCLES>

void delaycycles_min1 ( )