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#ifndef _UBX_H
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#define _UBX_H
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#include <inttypes.h>
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#define INVALID    0x00
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#define VALID      0x01
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#define PROCESSED  0x02
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#define SATFIX_NONE                      0x00
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#define SATFIX_DEADRECKOING      0x01
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#define SATFIX_2D                                0x02
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#define SATFIX_3D                                0x03
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#define SATFIX_GPS_DEADRECKOING  0x04
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#define SATFIX_TIMEONLY                  0x05
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/* enable the UBX protocol at the gps receiver with the following messages enabled
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  01-02 NAV - POSLLH
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  01-03 NAV - STATUS
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  01-08 NAV - POSUTM
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  01-12 NAV - VELNED */
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typedef struct
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{
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        uint8_t         satfix;         // type of satfix
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        int32_t         utmnorth;       // in cm (+ = north)
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        int32_t         utmeast;        // in cm (+ = east)
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        int32_t         utmalt;     // in cm (+ = top)
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        int32_t         velnorth;       // in cm/s
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        int32_t         veleast;        // in cm/s
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        int32_t         veltop;     // in cm/s
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        int32_t         longitude;  // in 1e-07 deg
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        int32_t         latitude;       // in 1e-07 deg
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        int32_t         altitude;   // in mm
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        uint8_t         status;     // status of data: invalid | valid
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} GPS_INFO_t;
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//here you will find the current gps info
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extern GPS_INFO_t GPSInfo;      // measured position (last gps record)
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// this variable should be decremted by the application
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extern volatile uint8_t GPSTimeout; // is reset to 255 if a new UBX msg was received
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// initialized the upx parser
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extern void ubx_init(void);
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// this function should be called within the UART RX ISR
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extern void ubx_parser(uint8_t c);
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#endif //_UBX_H