CRC-CCITT 16-bit Python Manual Calculation

Question

Problem

I am writing code for an embedded device. A lot of solutions out there for CRC-CCITT 16-bit calculations require libraries.

Given that u

Answer 1

The original function, checkCRC, can also do "CRC-CCITT (XModem)".

Just set:

poly = 0x1021
reg = 0

Instead of

poly = 0x11021
reg = 0xFFFF