gps.h

#ifndef _GPS_H_
#define _GPS_H_

#define MAX_LENGTH 80

struct gga {
    int time;
    float latitude;
    float longitude;
    float hdop;
    float altitude;
};


class GPS
{
public:
    bool is_new_data=false;
    gga gpgga;
    
    void begin();
    void receive_next_msg();

private:
    char received_data[260];

    bool read();
    bool check(char *sentence);
    bool update(char *sentence);
    bool isGGA(char *sentence);
    float NMEAtoDec(char *pos);
};

#endif