se050::crc Namespace Reference

Functions
std::uint16_t	Crc16Edc7816 (const std::uint8_t *buffer, std::size_t offset, std::size_t length) noexcept
	Compute T=1 EDC over bytes [offset, offset+length) of buffer.
void	AppendEdc (std::uint8_t *frame, std::size_t len_without_edc) noexcept
	Append EDC immediately after frame[0 .. len_without_edc-1].
bool	VerifyFrameCrc (const std::uint8_t *frame, std::size_t total_len) noexcept
	Verify EDC on a full received frame (includes trailing 2-byte CRC).

Function Documentation

AppendEdc()

void se050::crc::AppendEdc ( std::uint8_t *  frame, std::size_t  len_without_edc  )

inlinenoexcept

Append EDC immediately after frame[0 .. len_without_edc-1].

Crc16Edc7816()

std::uint16_t se050::crc::Crc16Edc7816 ( const std::uint8_t *  buffer, std::size_t  offset, std::size_t  length  )

inlinenoexcept

Compute T=1 EDC over bytes [offset, offset+length) of buffer.

Parameters

buffer	Full frame buffer (NAD..INF).
offset	First byte included in CRC (normally 0 for whole frame sans EDC).
length	Number of bytes to feed into CRC excluding the 2-byte EDC field.

Returns

16-bit CRC value; AppendEdc maps it to the wire as LSB then MSB.

VerifyFrameCrc()

bool se050::crc::VerifyFrameCrc ( const std::uint8_t *  frame, std::size_t  total_len  )

inlinenoexcept

Verify EDC on a full received frame (includes trailing 2-byte CRC).