KAT/docs/kia_v2.md

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Kia V2 Protocol

Rust module: src/protocols/kia_v2.rs
Reference: REFERENCES/ProtoPirate/protocols/kia_v2.c

Overview

Kia V2 uses Manchester encoding at 500/1000 µs. 53 bits: 32 serial + 4 button + 12 counter + 4 CRC, plus start bit. Long preamble of 252 long pairs. CRC4 (XOR nibbles + offset 1).

Timing

Parameter	Value	Notes
Short	500 µs	±150 µs
Long	1000 µs	±150 µs
Min bits	53

Encoding

Manchester encoding; bit value from short/long and transition.

Frame Layout (53 bits)

• Start bit + 32 serial + 4 button + 12 counter (byte-swapped) + 4 CRC.

Decoder Steps

1. Reset — Wait for preamble (long pulses).
2. CheckPreamble — Count 252 long pairs.
3. CollectRawBits — Manchester decode; at 53 bits validate CRC4 and return.

Encoder

Supported; preamble and Manchester 53-bit frame.

Frequencies

433.92 MHz.