Watchdog timer implemented

Enable watchdog timer on boot. Add FreeRTOS task to clear the timer. Watchdog expires after 10.7 seconds, and is cleared every 8 seconds.

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

added 3-Epicardium label

Oops, forgot to remove that debug message! Will do. Ack on the other suggestions. Schneider suggested not making the watchdog too aggressive. How about 2 seconds?

2 seconds sounds good, go ahead!

changed milestone to %v1.4

@jeffmakes, I have nominated this MR for version 1.4 which is due in a few hours. What is your state on this?

Starting in 10 min, should get it done for 1.4. I'm just reading about FreeRTOS Timers...

If I can answer any questions ping me!

If you haven't seen it already: https://www.freertos.org/xTimerCreateStatic.html contains an example.

assigned to @rahix

added 6 commits

• 4da6dd8a - Set watchdog to expire after 2.7 seconds
• 665ee44a - Refactor to use software timer instead of task to clear the watchdog.
• 03ca1ae0 - Output log message in case of system reset due to watchdog timeout
• f4b4ef71 - Tweak watchdog reset log message
• 4b77f64c - Clear watchdog every 2 seconds
• b43f20b5 - Ran code-format.sh

Compare with previous version

resolved all threads

added 1 commit

• ab9a3bce - Remove log message on watchdog clear

Compare with previous version

Ok, now running nicely with the software timer. Also added a log message that prints on boot if the system was reset due to watchdog timeout. Other than that, there is no noise in the log.

LGTM, will test, then merge

merged

mentioned in commit 2e84e69a