[Tcllib-devel] would it be possible to extend crc16 in tcllib

[<mar...@we...>]

Hi,



i use a rs485 converter to read serial data from a solar inverters and a
electricity meter. crc16 is used to check the transmission.

these methods are currently available in tcllib:

# CRC16: 0xBB3D

# CRC-CCITT: 0x29B1

# XMODEM: 0x31C3

# CRC-32: 0xCBF43926



however, other crc codes are used. would it be possible to extend crc16 with
these codes in tcllib 1.21 and above?

#   KERMIT:    0x2189

#   MODBUS:    0x4B37

#   MCRF4XX:   0x6F91

#   GENIBUS:   0xD64E

#   X.25:      0x906E

#   SDLC:      0x906E

#   USB:       0xB4C8

#   BUYPASS:   0xFEE8

#   UMTS:      0xFEE8

#   GSM:       0xCE3C

#   MAXIM:     0x44C2

#   CMS:       0xAEE7



See table Appendix A in http://reveng.sourceforge.net/crc-catalogue/all.htm



i have integrated these changes into the tcllib1.21/crc/crc16.tcl file, but
they are overwritten with every new update.

For example, i have attached the extended file. all places where a change
was made were marked with MMMMMM



best regards

markus ort