TSL256X Sensor

Files
file	tsl256x.c
	Driver for the external TSL256X light sensor.
file	tsl256x.h
	Header file for the external TSL256X Sensor Driver.

Functions
static uint16_t	calculate_lux (uint8_t *buf)

TSL256X convertion and calibration values
#define	LUX_SCALE   14
	scale by 2^14
#define	RATIO_SCALE   9
	scale ratio
#define	CH_SCALE   10
	scale channel values by 2^10
#define	CHSCALE_TINT0   0x7517
	322/11 * 2^CH_SCALE
#define	CHSCALE_TINT1   0x0fe7
	322/81 * 2^CH_SCALE

Detailed Description

Driver for the TSL256X sensor

The TSL256X driver returns the converted light value value in lux

Function Documentation

calculate_lux()

static uint16_t calculate_lux ( uint8_t * buf )

static

< scale channel values by 2^10

< 322/81 * 2^CH_SCALE

< 322/11 * 2^CH_SCALE

< scale channel values by 2^10

< scale channel values by 2^10

< scale channel values by 2^10

< scale by 2^14

< scale by 2^14

Definition at line 68 of file tsl256x.c.

References CH_SCALE, CHSCALE_TINT0, CHSCALE_TINT1, and LUX_SCALE.