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/**
* @file drv_airspeed.h
*
* Airspeed driver interface.
*
* @author Simon Wilks
*/
#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_BASE_DEVICE_PATH "/dev/airspeed"
#define AIRSPEED0_DEVICE_PATH "/dev/airspeed0"
/*
* ioctl() definitions
*
* Airspeed drivers also implement the generic sensor driver
* interfaces from drv_sensor.h
*/
#define _AIRSPEEDIOCBASE (0x7700)
#define __AIRSPEEDIOC(_n) (_IOC(_AIRSPEEDIOCBASE, _n))
#define AIRSPEEDIOCSSCALE __AIRSPEEDIOC(0)
#define AIRSPEEDIOCGSCALE __AIRSPEEDIOC(1)
/** airspeed scaling factors; out = (in * Vscale) + offset */
struct airspeed_scale {
float offset_pa;
float scale;
};
#endif /* _DRV_AIRSPEED_H */
