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

#ifndef _DRV_BARO_H
#define _DRV_BARO_H

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

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

/*
 * ioctl() definitions
 */

#define _BAROIOCBASE		(0x2100)
#define _BAROIOC(_n)		(_IOC(_BAROIOCBASE, _n))

/** set the driver polling rate to (arg) Hz, or one of the BARO_POLLRATE constants */
#define BAROIOCSPOLLRATE	_BAROIOC(0)

#define BARO_POLLRATE_MANUAL		1000000	/**< poll when read */
#define BARO_POLLRATE_EXTERNAL		1000001	/**< poll when device signals ready */

/** set the internal queue depth to (arg) entries, must be at least 1 */
#define BAROIOCSQUEUEDEPTH	_BAROIOC(1)

/** set the report format to (arg); zero is the standard, 1-10 are reserved, all others are driver-specific. */
#define BAROIOCSREPORTFORMAT 	_BAROIOC(2)

#endif /* _DRV_BARO_H */