diff options
Diffstat (limited to 'apps/drivers')
-rw-r--r-- | apps/drivers/drv_airspeed.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/apps/drivers/drv_airspeed.h b/apps/drivers/drv_airspeed.h new file mode 100644 index 000000000..a98f56807 --- /dev/null +++ b/apps/drivers/drv_airspeed.h @@ -0,0 +1,74 @@ +/**************************************************************************** + * + * 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 Airspeed driver interface. + */ + +#ifndef _DRV_AIRSPEED_H +#define _DRV_AIRSPEED_H + +#include <stdint.h> +#include <sys/ioctl.h> + +#include "drv_sensor.h" +#include "drv_orb_dev.h" + +#define AIRSPEED_DEVICE_PATH "/dev/airspeed" + +/** + * Airspeed report structure. Reads from the device must be in multiples of this + * structure. + */ +struct airspeed_report { + uint64_t timestamp; + uint8_t speed; /** in meters/sec */ +}; + +/* + * ObjDev tag for raw range finder data. + */ +ORB_DECLARE(sensor_differential_pressure); + +/* + * ioctl() definitions + * + * Airspeed drivers also implement the generic sensor driver + * interfaces from drv_sensor.h + */ + +#define _AIRSPEEDIOCBASE (0x7700) +#define __AIRSPEEDIOC(_n) (_IOC(_AIRSPEEDIOCBASE, _n)) + + +#endif /* _DRV_AIRSPEED_H */ |