TSL2561 illuminance sensor

Device driver interface for the illuminance TSL2561 sensor. More...

Detailed Description

Device driver interface for the illuminance TSL2561 sensor.

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

Files
file	tsl2561.h
	Device driver interface for the illuminance TSL2561 sensor.
file	tsl2561_internals.h
	Internal addresses, registers, constants for the TSL2561 sensor.
file	tsl2561_params.h
	Default configuration for TSL2561.

Data Structures
struct	tsl2561_params_t
	Device initialization parameters. More...
struct	tsl2561_t
	Device descriptor for the TSL2561 sensor. More...

Functions
int	tsl2561_init (tsl2561_t *dev, const tsl2561_params_t *params)
	Initialize the given TSL2561 device. More...
uint16_t	tsl2561_read_illuminance (const tsl2561_t *dev)
	Read illuminance value from the given TSL2561 device, returned in lx. More...

TSL2561 I2C addresses
#define	TSL2561_ADDR_LOW   (0x29)
#define	TSL2561_ADDR_FLOAT   (0x39)
#define	TSL2561_ADDR_HIGH   (0x49)

TSL2561 integration times
#define	TSL2561_INTEGRATIONTIME_13MS   (0x00) /* 13.7ms */
#define	TSL2561_INTEGRATIONTIME_101MS   (0x01) /* 101ms */
#define	TSL2561_INTEGRATIONTIME_402MS   (0x02) /* 402ms */
#define	TSL2561_INTEGRATIONTIME_NA   (0x03) /* N/A */

TSL2561 gains
#define	TSL2561_GAIN_1X   (0x00)
#define	TSL2561_GAIN_16X   (0x10)

TSL2561 driver initialization return codes
#define	TSL2561_OK   (0)
#define	TSL2561_NOI2C   (-1)
#define	TSL2561_BADDEV   (-2)

Function Documentation

tsl2561_init()

int tsl2561_init	(	tsl2561_t *	dev,
		const tsl2561_params_t *	params
	)

Initialize the given TSL2561 device.

Parameters

[out]	dev	Initialized device descriptor of BMP180 device
[in]	params	Initialization parameters

Returns

0 on success

-1 if given I2C is not available

-2 if not a TSL2561 sensor

tsl2561_read_illuminance()

uint16_t tsl2561_read_illuminance

(

const tsl2561_t *

dev

)

Read illuminance value from the given TSL2561 device, returned in lx.

Parameters

[in]

dev

Device descriptor of TSL2561 device to read from

Returns

Illuminance in Lux (lx)