freqm.h File Reference

FREQM peripheral driver interface definitions. More...

Detailed Description

FREQM peripheral driver interface definitions.

Author

Urs Gompper urs.g.nosp@m.ompp.nosp@m.er@ml.nosp@m.-pa..nosp@m.com

Definition in file freqm.h.

#include <errno.h>
#include <mutex.h>
#include "periph_cpu.h"
#include "periph/gpio.h"
#include "time_units.h"

Include dependency graph for freqm.h:

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Typedefs
typedef void(*	freqm_cb_t) (uint32_t result, bool overflow, void *context)
	Frequency meter callback function.
typedef uint_fast8_t	freqm_t
	Define default Frequency meter type identifier.

Functions
void	freqm_init (freqm_t idx)
	Initialize the frequency meter.
void	freqm_frequency_get_async (freqm_t idx, freqm_cb_t freqm_cb, void *context, uint32_t period_us)
	Read number of periods of measured clock and calculate its frequency.
int	freqm_frequency_get (freqm_t idx, uint32_t *result, uint32_t period_us)
	Read number of periods of measured clock and calculate its frequency.