leviathan
39 lines
972 B
Markdown
39 lines
972 B
Markdown
# Kia V2 Protocol
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**Rust module:** `src/protocols/kia_v2.rs`
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**Reference:** `REFERENCES/ProtoPirate/protocols/kia_v2.c`
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## Overview
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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).
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## Timing
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| Parameter | Value | Notes |
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|-----------|---------|---------|
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| Short | 500 µs | ±150 µs |
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| Long | 1000 µs | ±150 µs |
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| Min bits | 53 | |
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## Encoding
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Manchester encoding; bit value from short/long and transition.
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## Frame Layout (53 bits)
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- Start bit + 32 serial + 4 button + 12 counter (byte-swapped) + 4 CRC.
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## Decoder Steps
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1. **Reset** — Wait for preamble (long pulses).
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2. **CheckPreamble** — Count 252 long pairs.
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3. **CollectRawBits** — Manchester decode; at 53 bits validate CRC4 and return.
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## Encoder
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Supported; preamble and Manchester 53-bit frame.
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## Frequencies
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433.92 MHz.
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