Frame Check Sequence (FCS) = Cyclic Redundancy Check (CRC)
Blockprüfzeichenfolge (BPF)
CRC Implementation Code in C, very detailed description
Zyklische Redundanzprüfung
A Painless Guide to CRC Error Detection Algorithms
YouTube
How do CRCs work?
Cyclic Redundancy Check ( incl. Examples and Step-By-Step Guide) – Computer Networks
CRC – Cyclic Redundancy Check
CRC error detection in embedded applications
CRC Implementation
Forum
CRC32: C Implemtierung OHNE Lookup-Table
CRC32 C or C++ implementation
CRC-CCITT Implementation
How is a CRC32 checksum calculated?
Only pure implementation
CRC library with routines to check for errors in the data transfer.
CRC-32
CRC-32 in different programming languages
crc32.c, Apple
CRC-16
crc16.c, mikrocontroller.net
CRC-16 Prüfsumme (serielle Übertragung), mikrocontroller.net
crc-16.c, www8.cs.umu.se/~isak/snippets/crc-16.c
CRC-16-CCITT
Calculate / Test
Online CRC Calculator
On-line CRC calculation and free library
Calculate 16 bit and 32 bit CRC’s
Catalogue of parametrised CRC algorithms with 16 bits
Summary of the CRC Catalogue
GitHub
github.com/bxparks/AceCRC, Cyclic Redundancy Check (CRC) algorithms (e.g. crc16ccitt, crc32) programmatically converted from C99 code generated by pycrc (https://pycrc.org) to Arduino C++ using namespaces and PROGMEM flash memory.