Module codec_utils 

Shared codec utilities for ZUS RPC protocols

This module provides common utilities used by both the standard 40-byte protocol and the mobile 16-byte protocol:

• CRC calculations (header CRC16, data CRC32/CRC16)
• Common flag definitions

Modules

flags

Common flag bit definitions

msg_types

Message types shared between protocols

Functions

calculate_data_crc16

Calculate data CRC16 (lower 16 bits of CRC32)

calculate_data_crc32

Calculate data CRC32 using IEEE polynomial (ISO-HDLC)

calculate_header_crc16

Calculate header CRC16 using truncating addition