4ed48feaa2
* SML: CRC for binary SML parsing * switch algos * improve errormessage on buffer overflow * move crc variable to their own struct * Use Flag bit to disable CRC, auto-detect algorithm, data in own struct debug log * configure and enable/disable via special option "=soC,bufsz,mode", mode 16 autodetect. * fix 15 vs 0xF * remove benchmark code * fix typo in comment * Byteflip for CRC
FastCRC
Fast CRC Arduino library Up to 30 times faster than crc16.h (_avr_libc)
- uses the on-chip hardware for Teensy 3.0 / 3.1 / 3.2 / 3.5 / 3.6
- uses fast table-algorithms for other chips
List of supported CRC calculations:
7 BIT:
CRC7 (poly=0x09 init=0x00 refin=false refout=false xorout=0x00 check=0x75) MultiMediaCard interface
8 BIT:
SMBUS (poly=0x07 init=0x00 refin=false refout=false xorout=0x00 check=0xf4)
MAXIM (poly=0x31 init=0x00 refin=true refout=true xorout=0x00 check=0xa1)
16 BIT:
KERMIT (Alias CRC-16/CCITT, CRC-16/CCITT-TRUE, CRC-CCITT) (poly=0x1021 init=0x0000 refin=true refout=true xorout=0x0000 check=0x2189 Attention: sometimes you'll find byteswapped presentation of result in other implementations)
CCITT-FALSE (poly=0x1021 init=0xffff refin=false refout=false xorout=0x0000 check=0x29b1)
MCRF4XX (poly=0x1021 init=0xffff refin=true refout=true xorout=0x0000 check=0x6f91)
MODBUS (poly=0x8005 init=0xffff refin=true refout=true xorout=0x0000 check=0x4b37)
XMODEM (Alias ZMODEM, CRC-16/ACORN) (poly=0x1021 init=0x0000 refin=false refout=false xorout=0x0000 check=0x31c3)
X25 (Alias CRC-16/IBM-SDLC, CRC-16/ISO-HDLC, CRC-B) (poly=0x1021 init=0xffff refin=true refout=true xorout=0xffff check=0x906e)
32 BIT:
CRC32, CRC-32/ADCCP, PKZIP, ETHERNET, 802.3 (poly=0x04c11db7 init=0xffffffff refin=true refout=true xorout=0xffffffff check=0xcbf43926)
CKSUM, CRC-32/POSIX (poly=0x04c11db7 init=0x00000000 refin=false refout=false xorout=0xffffffff check=0x765e7680)