ambient_light.h File Reference

#include <stdbool.h>
#include <stdint.h>

Macros
#define	AMBIENT_LIGHT_LEVEL_ENUM_COUNT   (AmbientLightLevelVeryLight + 1)
	Number of AmbientLightLevel values.

Enumerations
enum	AmbientLightLevel {   AmbientLightLevelUnknown = 0 , AmbientLightLevelVeryDark , AmbientLightLevelDark , AmbientLightLevelLight ,   AmbientLightLevelVeryLight }
	Light level enum. More...

Functions
void	ambient_light_init (void)
	Initialize the ambient light sensor.
uint32_t	ambient_light_get_light_level (void)
	Read the light level.
void	ambient_light_prime (void)
	Announce that readings will be wanted soon.
void	ambient_light_release (void)
	Drop a reference taken with ambient_light_prime().
void	ambient_light_suspend (void)
	Stop sampling until the matching ambient_light_resume().
void	ambient_light_resume (void)
	Drop a reference taken with ambient_light_suspend().
void	ambient_light_common_init (void)
	Initialize the reference counting common to all drivers.
void	ambient_light_driver_set_state (bool active, bool sampling)
	Apply the sampling state computed by the common code.
uint32_t	ambient_light_get_dark_threshold (void)
	Get the threshold between light and dark.
void	ambient_light_set_dark_threshold (uint32_t new_threshold)
	Set the threshold between light and dark.
bool	ambient_light_is_light ()
	Check whether it is light.
AmbientLightLevel	ambient_light_level_to_enum (uint32_t light_level)
	Classify a light level against the dark threshold.
bool	ambient_light_lux_available (void)
	Check whether the board has raw-count to lux coefficients.
uint32_t	ambient_light_level_to_lux (uint32_t light_level)
	Convert a light level to lux using the board coefficients.

Variables
static const uint32_t	AMBIENT_LIGHT_LEVEL_MAX = (1U << CONFIG_AMBIENT_LIGHT_BITS)
	Upper bound of the raw light level scale (CONFIG_AMBIENT_LIGHT_BITS bits).