PerfCounter Class Reference

Performance Counter class for teensy 4.1 microcontrollers. More...

#include <perf_counter.hpp>

Public Member Functions
void	start () __attribute__((always_inline))
	Start Measurement. More...
void	end () __attribute__((always_inline))
	End measurement. More...
float	mean ()
	Returns the mean number of cycles between start() and stop(). More...
uint32_t	last_duration ()
	Returns the last recorded duration. More...
void	reset () __attribute__((always_inline))
void	output () __attribute__((always_inline))

Static Public Member Functions
static void	init () __attribute__((always_inline))
	Set up the debug module for clock cycle counting. More...

Public Attributes
uint32_t	Stack = 0
	Stack for mean calculation. More...
uint32_t	Count = 0
	Count for mean calculation. More...
uint32_t	Cycles = 0
	Last recorded duration (difference in clock cycles recorded) More...
uint32_t	StartTime = 0
	Stored starting time of the measurement. More...

Detailed Description

Performance Counter class for teensy 4.1 microcontrollers.

Note

imxrt.h defines ARM_DWT_CYCCNT as (*(volatile uint32_t *)0xE0001004).

Member Function Documentation

end()

void PerfCounter::end ( )

inline

End measurement.

init()

static void PerfCounter::init ( )

inlinestatic

Set up the debug module for clock cycle counting.

Warning

This function sets the registers globally and will affect all instances and also the overall performance.

last_duration()

uint32_t PerfCounter::last_duration ( )

inline

Returns the last recorded duration.

mean()

float PerfCounter::mean ( )

inline

Returns the mean number of cycles between start() and stop().

output()

void PerfCounter::output ( )

inline

reset()

void PerfCounter::reset ( )

inline

start()

void PerfCounter::start ( )

inline

Start Measurement.

Member Data Documentation

Count

uint32_t PerfCounter::Count = 0

Count for mean calculation.

Cycles

uint32_t PerfCounter::Cycles = 0

Last recorded duration (difference in clock cycles recorded)

Stack

uint32_t PerfCounter::Stack = 0

Stack for mean calculation.

StartTime

uint32_t PerfCounter::StartTime = 0

Stored starting time of the measurement.

---

The documentation for this class was generated from the following file:

• code/hardware/perf_counter.hpp