leviathan/KAT
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Working changes

Browse Source
This commit is contained in:
leviathan
2026-02-13 18:10:29 -05:00
parent 9e2565c1fc
commit 04b1d91d78
15 changed files with 587 additions and 162 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/protocols/fiat_v0.rs
+13 -4
View File
@@ -22,6 +22,12 @@ const GAP_US: u32 = 800;
const TOTAL_BURSTS: u8 = 3;
const INTER_BURST_GAP: u32 = 25000;
// After long silence, first HIGH can be merged/wrong (e.g. 658µs); accept 100-700µs to enter Preamble.
const RESET_HIGH_MIN_US: u32 = 100;
const RESET_HIGH_MAX_US: u32 = 700;
// Preamble short LOW: ref 200±100; allow 80-320µs so truncated first LOW (e.g. 99µs) still counts.
const PREAMBLE_SHORT_DELTA: u32 = 120;
/// Manchester state machine states (matches Flipper's manchester_decoder.h, same as Ford V0)
#[derive(Debug, Clone, Copy, PartialEq)]
enum ManchesterState {
@@ -154,7 +160,7 @@ impl ProtocolDecoder for FiatV0Decoder {
}
fn supported_frequencies(&self) -> &[u32] {
&[433_920_000]
&[433_920_000, 433_880_000] // 433.88 MHz common for Fiat keyfobs
}
fn reset(&mut self) {
@@ -172,12 +178,14 @@ impl ProtocolDecoder for FiatV0Decoder {
fn feed(&mut self, level: bool, duration: u32) -> Option<DecodedSignal> {
match self.step {
// Reset: wait for short HIGH (matches reference)
// Reset: wait for HIGH that starts the burst. Ref: short 200µs; live capture often has
// first HIGH 100-700µs (merged/AGC) and first LOW truncated (e.g. 99µs), so accept range.
DecoderStep::Reset => {
if !level {
return None;
}
if duration_diff!(duration, TE_SHORT) < TE_DELTA {
let in_range = duration >= RESET_HIGH_MIN_US && duration <= RESET_HIGH_MAX_US;
if in_range {
self.data_low = 0;
self.data_high = 0;
self.step = DecoderStep::Preamble;
@@ -189,11 +197,12 @@ impl ProtocolDecoder for FiatV0Decoder {
}
// Preamble: only process LOW pulses (reference: if(level) return). Count short LOWs; gap = 800µs LOW.
// Use PREAMBLE_SHORT_DELTA so first LOW after long gap (e.g. 99µs) counts as short.
DecoderStep::Preamble => {
if level {
return None;
}
let short_ok = duration_diff!(duration, TE_SHORT) < TE_DELTA;
let short_ok = duration_diff!(duration, TE_SHORT) < PREAMBLE_SHORT_DELTA;
let gap_ok = duration_diff!(duration, GAP_US) < TE_DELTA;
if short_ok {