src/marnav/nmea/alm.cpp

   1 #include <marnav/nmea/alm.hpp>
   2 #include <marnav/nmea/io.hpp>
   3 #include <stdexcept>
   4
   5 namespace marnav
   6 {
   7 namespace nmea
   8 {
   9 constexpr sentence_id alm::ID;
  10 constexpr const char * alm::TAG;
  11
  12 alm::alm()
  13         : sentence(ID, TAG, talker::global_positioning_system)
  14 {
  15 }
  16
  17 alm::alm(talker talk, fields::const_iterator first, fields::const_iterator last)
  18         : sentence(ID, TAG, talk)
  19 {
  20         if (std::distance(first, last) != 15)
  21                 throw std::invalid_argument{"invalid number of fields in alm"};
  22
  23         read(*(first + 0), number_of_messages_);
  24         read(*(first + 1), message_number_);
  25         read(*(first + 2), satellite_prn_);
  26         read(*(first + 3), gps_week_number_);
  27         read(*(first + 4), sv_health_);
  28         read(*(first + 5), eccentricity_, data_format::hex);
  29         read(*(first + 6), almanac_reference_time_, data_format::hex);
  30         read(*(first + 7), inclination_angle_, data_format::hex);
  31         read(*(first + 8), rate_of_right_ascension_, data_format::hex);
  32         read(*(first + 9), root_of_semimajor_axis_, data_format::hex);
  33         read(*(first + 10), argument_of_perigee_, data_format::hex);
  34         read(*(first + 11), longitude_of_ascension_node_, data_format::hex);
  35         read(*(first + 12), mean_anomaly_, data_format::hex);
  36         read(*(first + 13), f0_clock_parameter_, data_format::hex);
  37         read(*(first + 14), f1_clock_parameter_, data_format::hex);
  38
  39         check();
  40 }
  41
  42 void alm::check() const
  43 {
  44         if ((satellite_prn_ < 1) || (satellite_prn_ > 32))
  45                 throw std::invalid_argument{"invalid satellite PRN"};
  46 }
  47
  48 void alm::append_data_to(std::string & s) const
  49 {
  50         append(s, to_string(number_of_messages_));
  51         append(s, to_string(message_number_));
  52         append(s, format(satellite_prn_, 2));
  53         append(s, to_string(gps_week_number_));
  54         append(s, format(sv_health_, 2));
  55         append(s, format(eccentricity_, 1, data_format::hex));
  56         append(s, format(almanac_reference_time_, 1, data_format::hex));
  57         append(s, format(inclination_angle_, 1, data_format::hex));
  58         append(s, format(rate_of_right_ascension_, 1, data_format::hex));
  59         append(s, format(root_of_semimajor_axis_, 1, data_format::hex));
  60         append(s, format(argument_of_perigee_, 1, data_format::hex));
  61         append(s, format(longitude_of_ascension_node_, 1, data_format::hex));
  62         append(s, format(mean_anomaly_, 1, data_format::hex));
  63         append(s, format(f0_clock_parameter_, 1, data_format::hex));
  64         append(s, format(f1_clock_parameter_, 1, data_format::hex));
  65 }
  66 }
  67 }