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93d444d1aa
this device ID identifies a specific device via the tuple of (bus, bus type, address, devtype). This allows device specific configuration data to be stored along with a device ID, so the code can know when the user has changed device configuration (such as removing an external compass), and either invalidate the device configuration or force the user to re-calibrate
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/****************************************************************************
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*
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* Copyright (c) 2014 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 drv_device.h
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*
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* Generic device / sensor interface.
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*/
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#ifndef _DRV_DEVICE_H
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#define _DRV_DEVICE_H
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#include <stdint.h>
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#include <sys/ioctl.h>
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#include "drv_sensor.h"
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#include "drv_orb_dev.h"
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/*
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* ioctl() definitions
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*/
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#define _DEVICEIOCBASE (0x100)
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#define _DEVICEIOC(_n) (_IOC(_DEVICEIOCBASE, _n))
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/** ask device to stop publishing */
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#define DEVIOCSPUBBLOCK _DEVICEIOC(0)
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/** check publication block status */
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#define DEVIOCGPUBBLOCK _DEVICEIOC(1)
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/**
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* Return device ID, to enable matching of configuration parameters
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* (such as compass offsets) to specific sensors
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*/
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#define DEVIOCGDEVICEID _DEVICEIOC(2)
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#endif /* _DRV_DEVICE_H */
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