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AI agent for embedded systems engineers

Watchdog and Fault Recovery Test Agent

A hardware-verified record that the device recovers correctly from each defined fault

Quality controlIT and developmentProduct development
See how it worksGet access
Watchdog and Fault Recovery Test Agent: what goes in, what the agent does and what you get

What it does

A watchdog that has never been triggered on real hardware is a hope, not a safeguard. This agent controls a test rig that can inject faults: power dips, brownouts, stalled tasks, corrupted memory and blocked communication. For each fault, it watches whether the device resets, how long it takes, and whether it comes back with its settings and state intact. It logs the result against the requirement. After a failure, it waits for the engineer's fix, retries the same fault, and then moves to the next one. It repeats each fault a set number of times to catch rare failures. The engineer approves the final test report. Edge case: a device that recovers but loses its last saved setting is recorded as a failure, not a pass.

How it works

Follow the arrows from top to bottom. The orange dashed arrow is the loop: when a check fails, the agent goes back and tries again.

Start and resultWhat it doesA check on its own workWaits for your OKGoes back and retries
Yes, continueYes, continueApprovedNoNo 1 STARTS WHEN Release candidate ready for fault testing 2 USES A TOOL Load the fault list and requirements 3 USES A TOOL Inject the next fault on the test rig 4 USES A TOOL Record whether and when the device resets and whatstate it restores 5 CHECKS THE RESULT Did it recover within the time limit with thecorrect state? If not: repeat the fault 10 times to measure how oftenit fails and log the evidence. Back to step 3. 6 DOES Record the pass or fail against the requirement 7 CHECKS THE RESULT Are all faults in the list tested? If not: move to the next fault and repeat. Back to step3. 8 DOES List failures with logs and repeat counts 9 YOU APPROVE Engineer approves the test report 10 RESULT Fault recovery report
Read the steps as a list
  1. Release candidate ready for fault testing
  2. Load the fault list and requirements
  3. Inject the next fault on the test rig
  4. Record whether and when the device resets and what state it restores
  5. Did it recover within the time limit with the correct state?If not: repeat the fault 10 times to measure how often it fails and log the evidence. Back to step 3.
  6. Record the pass or fail against the requirement
  7. Are all faults in the list tested?If not: move to the next fault and repeat. Back to step 3.
  8. List failures with logs and repeat counts
  9. Engineer approves the test reportThe agent waits here for your OK.
  10. Fault recovery report

How it decides

A fault passes only if the device resets within the time limit and restores the required state in every repeat.

  • Repeat each fault at least 10 times
  • Count a lost saved setting as a failure
  • Fail any recovery slower than the stated limit
  • Retest failed faults only after a new build is provided

Make it yours

Every agent is a starting point. You choose these settings for your own situation.

  • Fault list and parameters
  • Repeat count per fault (default 10)
  • Recovery time limits
  • Which state items to verify after recovery

What keeps you in control

It always asks you first

  • The final test report
  • Any change of requirement or time limit

Hard limits

  • Operates only on the isolated test rig
  • Never injects faults on devices in the field

It stops when

  • Done: every fault tested with results recorded
  • Stop: the rig cannot inject a fault safely

Set it up

We guide you through the set-up, step by step

Members get the full set-up guide for this agent. No technical skills needed: you copy, paste and upload.

10 minto set it up in your AI
5 AIsChatGPT, Claude, Copilot, Gemini, Grok
  • One set of instructions to paste into your AI, with the clicks for ChatGPT, Claude, Microsoft 365 Copilot, Gemini and Grok
  • The agent then walks you through connecting your own data, one source at a time
  • A downloadable copy with the flow chart, the rules and the full guide
Get access to this agent

An example run

What happensOn build 7.2 the agent injected a 50 ms power dip 10 times. 9 runs recovered in 180 ms, and one stayed hung for 4 seconds, failing the 500 ms limit. It logged a repeat rate of 10 percent. After the engineer fixed a brownout flag, the agent reran the dip 10 times and all recovered. A stalled task test then passed 10 of 10.

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