src/marnav/nmea/hdg.hpp

   1 #ifndef __NMEA__HDG__HPP__
   2 #define __NMEA__HDG__HPP__
   3
   4 #include <marnav/nmea/sentence.hpp>
   5 #include <marnav/utils/optional.hpp>
   6
   7 namespace marnav
   8 {
   9 namespace nmea
  10 {
  11 MARNAV_NMEA_DECLARE_SENTENCE_PARSE_FUNC(hdg)
  12
  13 /// @brief HDG - Heading - Deviation & Variation
  14 ///
  15 /// @code
  16 ///        1   2   3 4   5
  17 ///        |   |   | |   |
  18 /// $--HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
  19 /// @endcode
  20 ///
  21 /// Field Number:
  22 /// 1. Magnetic Sensor heading in degrees
  23 /// 2. Magnetic Deviation degrees
  24 /// 3. Magnetic Deviation direction
  25 ///    - E = Easterly
  26 ///    - W = Westerly
  27 /// 4. Magnetic Variation degrees
  28 /// 5. Magnetic Variation direction
  29 ///    - E = Easterly
  30 ///    - W = Westerly
  31 ///
  32 class hdg : public sentence
  33 {
  34         MARNAV_NMEA_SENTENCE_FRIENDS(hdg)
  35
  36 public:
  37         constexpr static const sentence_id ID = sentence_id::HDG;
  38         constexpr static const char * TAG = "HDG";
  39
  40         virtual ~hdg() {}
  41
  42         hdg();
  43         hdg(const hdg &) = default;
  44         hdg(hdg &&) = default;
  45         hdg & operator=(const hdg &) = default;
  46         hdg & operator=(hdg &&) = default;
  47
  48 protected:
  49         hdg(const std::string & talker, fields::const_iterator first, fields::const_iterator last);
  50         virtual std::vector<std::string> get_data() const override;
  51
  52 private:
  53         utils::optional<double> heading; // magnetic sensor heading in deg
  54         utils::optional<double> magn_dev; // magnetic deviation in deg
  55         utils::optional<direction> magn_dev_hem; // E:east, W:west
  56         utils::optional<double> magn_var; // magnetic variation in deg
  57         utils::optional<direction> magn_var_hem; // E:east, W:west
  58
  59 public:
  60         NMEA_GETTER(heading)
  61         NMEA_GETTER(magn_dev)
  62         NMEA_GETTER(magn_dev_hem)
  63         NMEA_GETTER(magn_var)
  64         NMEA_GETTER(magn_var_hem)
  65
  66         void set_heading(double t) noexcept { heading = t; }
  67         void set_magn_dev(double deg, direction hem);
  68         void set_magn_var(double deg, direction hem);
  69 };
  70 }
  71 }
  72
  73 #endif