PX4 Firmware
PX4 Autopilot Software http://px4.io
drv_airspeed.h
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33 
34 /**
35  * @file drv_airspeed.h
36  *
37  * Airspeed driver interface.
38  *
39  * @author Simon Wilks
40  */
41 
42 #ifndef _DRV_AIRSPEED_H
43 #define _DRV_AIRSPEED_H
44 
45 #include <stdint.h>
46 #include <sys/ioctl.h>
47 
48 #include "drv_sensor.h"
49 #include "drv_orb_dev.h"
50 
51 #define AIRSPEED_BASE_DEVICE_PATH "/dev/airspeed"
52 #define AIRSPEED0_DEVICE_PATH "/dev/airspeed0"
53 
54 /*
55  * ioctl() definitions
56  *
57  * Airspeed drivers also implement the generic sensor driver
58  * interfaces from drv_sensor.h
59  */
60 
61 #define _AIRSPEEDIOCBASE (0x7700)
62 #define __AIRSPEEDIOC(_n) (_PX4_IOC(_AIRSPEEDIOCBASE, _n))
63 
64 #define AIRSPEEDIOCSSCALE __AIRSPEEDIOC(0)
65 
66 /** airspeed scaling factors; out = (in * Vscale) + offset */
68  float offset_pa;
69  float scale;
70 };
71 
72 #endif /* _DRV_AIRSPEED_H */
uORB published object driver.
airspeed scaling factors; out = (in * Vscale) + offset
Definition: drv_airspeed.h:67
Common sensor API and ioctl definitions.