Driver definitions for the SRF02 ultrasonic ranger. More...

Detailed Description

Driver definitions for the SRF02 ultrasonic ranger.

The connection between the SRF08 and the MCU is based on the i2c interface.

Author: Zakaria Kasmi zkasm.nosp@m.i@in.nosp@m.f.fu-.nosp@m.berl.nosp@m.in.de; Peter Kietzmann peter.nosp@m..kie.nosp@m.tzman.nosp@m.n@ha.nosp@m.w-ham.nosp@m.burg.nosp@m..de; Kevin Weiss kevin.nosp@m..wei.nosp@m.ss@ha.nosp@m.w-ha.nosp@m.mburg.nosp@m..de

Definition in file srf08.h.

#include <stdint.h>
#include "periph/i2c.h"

Include dependency graph for srf08.h:

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Data Structures
struct	srf08_params_t
	Device initialization parameters. More...

struct	srf08_t
	Device descriptor for SRF08 sensors. More...

Macros
#define	SRF08_COMMAND_REG 0x0
	The sensors command register (write)

#define	SRF08_GAIN_REG 0x1
	Max.

#define	SRF08_RANGE_REG 0x2
	The sensors range register (write)

#define	SRF08_RANGE_HIGH_BYTE 0x2
	The upper measurement byte (read)

#define	SRF08_RANGE_LOW_BYTE 0x3
	The lower measurement byte (read)

#define	SRF08_MAX_REGISTER_NUMBER 35
	Number of highest register.

#define	SRF08_MAX_ECHO_NUMBER 17
	Maximum number of echos from more distant objects.

#define	SRF08_MAX_RANGE_6M 0x8C
	Maximum range the sensor can measure (6m)

#define	SRF08_MAX_GAIN 0x1F
	Maximum gain of the sensor (1025)

Enumerations
enum	srf08_mode_t { SRF08_MODE_INCH = 0x50 , SRF08_MODE_CM = 0x51 , SRF08_MODE_MICRO_SEC = 0x52 , SRF08_ANN_MODE_INCH = 0x53 , SRF08_ANN_MODE_CM = 0x54 , SRF08_ANN_MODE_MICRO_SEC = 0x55 }
	Possible measurement modes for the SRF08 sensor. More...

Functions
int	srf08_init (srf08_t dev, const srf08_params_t params)
	Initialize the SRF08 ultrasonic sensor.

int	srf08_set_max_range (const srf08_t *dev, uint8_t max_range)
	Set the maximum range of the SRF08.

int	srf08_set_max_gain (const srf08_t *dev, uint8_t max_gain)
	Set the maximum of the analog stages.

int	srf08_get_distances (const srf08_t dev, uint16_t range_array, int num_echos, srf08_mode_t ranging_mode)
	Get all distances measured from the SRF08 ultrasonic sensor.

Data Structures