leviathan
1.0 KiB
1.0 KiB
Kia V1 Protocol
Rust module: src/protocols/kia_v1.rs
Reference: REFERENCES/ProtoPirate/protocols/kia_v1.c
Overview
Kia V1 uses Manchester encoding at 800/1600 µs. 57 bits total: 32 serial + 8 button + 12 counter + 4 CRC. Long preamble (~90 long pairs). CRC4 with offset rules (cnt_high 0 vs ≥ 6).
Timing
| Parameter | Value | Notes |
|---|---|---|
| Short | 800 µs | ±200 µs |
| Long | 1600 µs | ±200 µs |
| Min bits | 57 |
Encoding
Manchester: symbol duration short or long; bit value from transition direction.
Frame Layout (57 bits)
- 32 bits: serial
- 8 bits: button
- 12 bits: counter
- 4 bits: CRC4 (checksum with offset rules)
Decoder Steps
- Reset — Wait for long pulse (preamble).
- CheckPreamble — Count long pairs until enough; then transition to data.
- DecodeData — Manchester decode; at 57 bits validate CRC4 and return.
Encoder
Supported; builds preamble and Manchester-encoded 57-bit frame.
Frequencies
433.92 MHz.