// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-
//
// Auto-detecting pseudo-GPS driver
//

#ifndef AP_GPS_Auto_h
#define AP_GPS_Auto_h

#include "../FastSerial/FastSerial.h"
#include "GPS.h"

class AP_GPS_Auto : public GPS
{
public:
    /// Constructor
    ///
    /// @note The stream is expected to be set up and configured for the
    ///       correct bitrate before ::init is called.
    ///
    /// @param	port	Stream connected to the GPS module.
    /// @param	ptr		Pointer to a GPS * that will be fixed up by ::init
    ///					when the GPS type has been detected.
    ///
    AP_GPS_Auto(FastSerial *s, GPS **gps);

    /// Dummy init routine, does nothing
    virtual void		init(enum GPS_Engine_Setting nav_setting = GPS_ENGINE_NONE);

    /// Detect and initialise the attached GPS unit.  Updates the
    /// pointer passed into the constructor when a GPS is detected.
    ///
    virtual bool 	read(void);

private:
    /// Copy of the port, known at construction time to be a real FastSerial port.
    FastSerial	*_fs;

    /// global GPS driver pointer, updated by auto-detection
    ///
    GPS			**_gps;

    /// low-level auto-detect routine
    ///
    GPS			*_detect(void);

    static const prog_char _mtk_set_binary[];
    static const prog_char _sirf_set_binary[];

	enum GPS_Engine_Setting _nav_setting;
};
#endif