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/****************************************************************************
*
* Copyright (C) 2013 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/**
* @file Rangefinder driver interface.
*/
#ifndef _DRV_RANGEFINDER_H
#define _DRV_RANGEFINDER_H
#include <stdint.h>
#include <sys/ioctl.h>
#include "drv_sensor.h"
#include "drv_orb_dev.h"
#define RANGE_FINDER_DEVICE_PATH "/dev/range_finder"
enum RANGE_FINDER_TYPE {
RANGE_FINDER_TYPE_LASER = 0,
};
/**
* @addtogroup topics
* @{
*/
/**
* range finder report structure. Reads from the device must be in multiples of this
* structure.
*/
struct range_finder_report {
uint64_t timestamp;
uint64_t error_count;
unsigned type; /**< type, following RANGE_FINDER_TYPE enum */
float distance; /**< in meters */
float minimum_distance; /**< minimum distance the sensor can measure */
float maximum_distance; /**< maximum distance the sensor can measure */
uint8_t valid; /**< 1 == within sensor range, 0 = outside sensor range */
};
/**
* @}
*/
/*
* ObjDev tag for raw range finder data.
*/
ORB_DECLARE(sensor_range_finder);
/*
* ioctl() definitions
*
* Rangefinder drivers also implement the generic sensor driver
* interfaces from drv_sensor.h
*/
#define _RANGEFINDERIOCBASE (0x7900)
#define __RANGEFINDERIOC(_n) (_IOC(_RANGEFINDERIOCBASE, _n))
/** set the minimum effective distance of the device */
#define RANGEFINDERIOCSETMINIUMDISTANCE __RANGEFINDERIOC(1)
/** set the maximum effective distance of the device */
#define RANGEFINDERIOCSETMAXIUMDISTANCE __RANGEFINDERIOC(2)
#endif /* _DRV_RANGEFINDER_H */
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