forked from Archive/PX4-Autopilot
87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/****************************************************************************
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*
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* Copyright (C) 2012 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/**
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* @file Common sensor API and ioctl definitions.
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*/
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#ifndef _DRV_SENSOR_H
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#define _DRV_SENSOR_H
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#include <stdint.h>
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#include <sys/ioctl.h>
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/*
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* ioctl() definitions
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*
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* Note that a driver may not implement all of these operations, but
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* if the operation is implemented it should conform to this API.
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*/
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#define _SENSORIOCBASE (0x2000)
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#define _SENSORIOC(_n) (_IOC(_SENSORIOCBASE, _n))
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/**
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* Set the driver polling rate to (arg) Hz, or one of the SENSOR_POLLRATE
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* constants
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*/
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#define SENSORIOCSPOLLRATE _SENSORIOC(0)
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/**
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* Return the driver's approximate polling rate in Hz, or one of the
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* SENSOR_POLLRATE values.
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*/
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#define SENSORIOCGPOLLRATE _SENSORIOC(1)
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#define SENSOR_POLLRATE_MANUAL 1000000 /**< poll when read */
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#define SENSOR_POLLRATE_EXTERNAL 1000001 /**< poll when device signals ready */
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#define SENSOR_POLLRATE_MAX 1000002 /**< poll at device maximum rate */
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#define SENSOR_POLLRATE_DEFAULT 1000003 /**< poll at driver normal rate */
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/**
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* Set the internal queue depth to (arg) entries, must be at least 1
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*
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* This sets the upper bound on the number of readings that can be
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* read from the driver.
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*/
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#define SENSORIOCSQUEUEDEPTH _SENSORIOC(2)
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/** return the internal queue depth */
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#define SENSORIOCGQUEUEDEPTH _SENSORIOC(3)
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/**
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* Reset the sensor to its default configuration.
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*/
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#define SENSORIOCRESET _SENSORIOC(4)
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#endif /* _DRV_SENSOR_H */ |