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Detect a silent CAN bus and mark the state as stale

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
43/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Active
Tech stack
rust
Domain
embedded-iot

Research direction

Start with the design and open questions in issue #11, then read contracts issue #20 for the freshness definition. The issue calls for logging sleep and wake behavior, tracking the last matching CAN frame, and handling heartbeat and awake-only values after N seconds without frames. Done means those behaviors are implemented and checked against the observed bus traffic; the timeout value and design details need clarification.

Written by the indexing model from the issue text.

Description

Part of https://github.com/OpenCarControls/firmware/issues/11, which has the design and open questions.

  • Record a log of the car falling asleep and waking up, and check what it sends.
  • Track the last matching frame and send freshness as defined in https://github.com/OpenCarControls/contracts/issues/20.
  • Stop or flag the heartbeat after N seconds without frames, and clear values that only make sense while awake.
Dominant language
Rust
Stars
1
Forks
0
Avg merge
14h 32m
Merged PRs (30d)
21

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  4. Open a pull request that references the issue number.

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