i-k-bus-board

warehack.ing/i-k-bus-board

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Author	SHA1	Message	Date
Ryan Malloy	a2dcd6d58d	Harden OBD-II K-line handler (code review findings) Fix UART pin detach: pinMatrixOutDetach() instead of no-op uart_set_pin(ALL_NO_CHANGE). Fix timeout underflow in readResponse() with remainingMs() helper. Add checksum validation on received frames. Echo verification in clearEcho() detects bus contention. Flush RX buffers after init sequences. Structural ISO 14230 frame parsing replaces byte-scanning. TesterPresent keepalive prevents P3 session timeout. Scanner re-initializes after consecutive failures.	2026-02-13 06:02:25 -07:00
Ryan Malloy	1464fcabe6	Refactor: extract KLineTransport and IbusHandler from IbusEsp32 Split the monolithic IbusEsp32 class into composable layers: - KLineTransport: UART, GPIO ISR, ring buffers, idle detection - IbusHandler: BMW I/K-Bus FSM, source filtering, packet callback - IbusEsp32: thin facade preserving the original API Library renamed from IbusEsp32 to AutoWire. Existing sniffer sketch (main.cpp) requires zero changes. All 3 ESP32 environments build cleanly (esp32dev, esp32-c3, esp32-s3).	2026-02-13 05:41:39 -07:00

Author

SHA1

Message

Date

Ryan Malloy

a2dcd6d58d

Harden OBD-II K-line handler (code review findings)

Fix UART pin detach: pinMatrixOutDetach() instead of no-op
uart_set_pin(ALL_NO_CHANGE). Fix timeout underflow in
readResponse() with remainingMs() helper. Add checksum
validation on received frames. Echo verification in clearEcho()
detects bus contention. Flush RX buffers after init sequences.
Structural ISO 14230 frame parsing replaces byte-scanning.
TesterPresent keepalive prevents P3 session timeout. Scanner
re-initializes after consecutive failures.

2026-02-13 06:02:25 -07:00

Ryan Malloy

1464fcabe6

Refactor: extract KLineTransport and IbusHandler from IbusEsp32

Split the monolithic IbusEsp32 class into composable layers:
- KLineTransport: UART, GPIO ISR, ring buffers, idle detection
- IbusHandler: BMW I/K-Bus FSM, source filtering, packet callback
- IbusEsp32: thin facade preserving the original API

Library renamed from IbusEsp32 to AutoWire. Existing sniffer
sketch (main.cpp) requires zero changes. All 3 ESP32 environments
build cleanly (esp32dev, esp32-c3, esp32-s3).

2026-02-13 05:41:39 -07:00

2 Commits