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/**
 * @file drv_baro.h
 *
 * Barometric pressure sensor driver interface.
 */

#ifndef _DRV_BARO_H
#define _DRV_BARO_H

#include <stdint.h>
#include <sys/ioctl.h>

#include "drv_sensor.h"
#include "drv_orb_dev.h"

#define BARO_DEVICE_PATH	"/dev/baro"

/**
 * baro report structure.  Reads from the device must be in multiples of this
 * structure.
 */
struct baro_report {
	float pressure;
	float altitude;
	float temperature;
	uint64_t timestamp;
	uint64_t error_count;
};

/*
 * ObjDev tag for raw barometer data.
 */
ORB_DECLARE(sensor_baro);

/*
 * ioctl() definitions
 */

#define _BAROIOCBASE		(0x2200)
#define _BAROIOC(_n)		(_IOC(_BAROIOCBASE, _n))

/** set corrected MSL pressure in pascals */
#define BAROIOCSMSLPRESSURE	_BAROIOC(0)

/** get current MSL pressure in pascals */
#define BAROIOCGMSLPRESSURE	_BAROIOC(1)

#endif /* _DRV_BARO_H */