Pulse counter

GPIO based pulse counting driver. More...

Detailed Description

GPIO based pulse counting driver.

This driver provides [S]ensor [A]ctuator [U]ber [L]ayer capabilities.

Files
file	pulse_counter.h
	Driver for the pulse counter.
file	pulse_counter_params.h
	Default configuration for PULSE_COUNTER devices.

Data Structures
struct	pulse_counter_params_t
	Parameters needed for device initialization. More...
struct	pulse_counter_t
	Device descriptor for a pulse counter device. More...

Functions
int	pulse_counter_init (pulse_counter_t *dev, const pulse_counter_params_t *params)
	Initialize a pulse counter device.
int16_t	pulse_counter_read_with_reset (pulse_counter_t *dev)
	Read and reset pulse counter value.
int16_t	pulse_counter_read_without_reset (pulse_counter_t *dev)
	Read pulse counter value.
void	pulse_counter_reset (pulse_counter_t *dev)
	Reset pulse counter value.

Function Documentation

pulse_counter_init()

int pulse_counter_init	(	pulse_counter_t *	dev,
		const pulse_counter_params_t *	params
	)

Initialize a pulse counter device.

Parameters

[out]	dev	device descriptor
[in]	params	configuration parameters

Returns

0 on success

-1 on error

pulse_counter_read_with_reset()

int16_t pulse_counter_read_with_reset

(

pulse_counter_t *

dev

)

Read and reset pulse counter value.

Parameters

[out]

dev

device descriptor of sensor

Returns

Accumulated pulse counts

pulse_counter_read_without_reset()

int16_t pulse_counter_read_without_reset

(

pulse_counter_t *

dev

)

Read pulse counter value.

Parameters

[in]

dev

device descriptor of sensor

Returns

Accumulated pulse counts

pulse_counter_reset()

void pulse_counter_reset

(

pulse_counter_t *

dev

)

Reset pulse counter value.

Parameters

[out]

dev

device descriptor of sensor