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

Detailed Description

Driver definitions for the SRF02 ultrasonic ranger.

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; Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de; Kevin Weiss kevin.nosp@m..wei.nosp@m.ss@ha.nosp@m.w-ha.nosp@m.mburg.nosp@m..de

Definition in file srf02.h.

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

Include dependency graph for srf02.h:

Data Structures
struct	srf02_t
	Device descriptor for SRF02 sensors. More...

Macros
#define	SRF02_DEFAULT_ADDR (0xe0) /* 224 decimal */
	Default I2C address of SRF02 sensors.

#define	SRF02_RANGE_DELAY (70000U)
	The datasheet tells us, that ranging takes 70ms.

Enumerations
enum	srf02_mode_t { SRF02_MODE_REAL_INCH = 0x50, SRF02_MODE_REAL_CM = 0x51, SRF02_MODE_REAL_MS = 0x52, SRF02_MODE_FAKE_INCH = 0x56, SRF02_MODE_FAKE_CM = 0x57, SRF02_MODE_FAKE_MS = 0x58 }
	Possible measurement modes of the SRF02 sensor. More...

Functions
int	srf02_init (srf02_t *dev, i2c_t i2c, uint8_t addr)
	Initialize the SRF02 ultrasonic sensor. More...

int	srf02_trigger (const srf02_t *dev, srf02_mode_t mode)
	Trigger a new measurement. More...

uint16_t	srf02_read (const srf02_t *dev)
	Read the results of the last ranging operation. More...

uint16_t	srf02_get_distance (const srf02_t *dev, srf02_mode_t mode)
	Get the distance measured from the SRF02 ultrasonic sensor. More...

int	srf02_set_addr (srf02_t *dev, uint8_t new_addr)
	Program the given device with a new bus address. More...

Data Structures