src/marnav/nmea/checksum.cpp

   1 #include <marnav/nmea/checksum.hpp>
   2 #include "hex_digit.hpp"
   3
   4 namespace marnav::nmea
   5 {
   6 checksum_error::checksum_error(uint8_t exp, uint8_t act)
   7         : expected_(exp)
   8         , actual_(act)
   9 {
  10         snprintf(text_, sizeof(text_), "checksum error (actual:%02X, expected:%02X)", actual_,
  11                 expected_);
  12 }
  13
  14 /// Returns the specified checksum as string.
  15 ///
  16 /// @param[in] sum The checksum to render as string.
  17 /// @return The checksum as string. This string is always two characters.
  18 ///
  19 std::string checksum_to_string(uint8_t sum)
  20 {
  21         char buf[3]{detail::hex_digit(sum >> 4), detail::hex_digit(sum), '\0'};
  22         return buf;
  23 }
  24 }