Checksums.h File Reference

#include <cstdint>
#include <span>

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Classes
struct	QGC::Fletcher8
	8-bit Fletcher checksum: two running byte sums modulo 256. More...

Namespaces
namespace	QGC

Functions
constexpr Fletcher8	QGC::fletcher8 (std::span< const uint8_t > bytes, Fletcher8 state={})
	Continues state over bytes, so a frame checksummed in parts matches the contiguous result.
constexpr uint16_t	QGC::crc16Xmodem (std::span< const uint8_t > bytes)
	CRC-16/XMODEM: polynomial 0x1021, initial value 0, no reflection and no final XOR.
constexpr uint32_t	QGC::crc24q (std::span< const uint8_t > bytes)
	CRC-24Q: polynomial 0x1864CFB, initial value 0, no reflection and no final XOR.
constexpr uint8_t	QGC::nmeaChecksum (std::span< const uint8_t > body)
	XOR of all bytes, the checksum NMEA 0183 sentences carry over their body.