Answer by Randy Nuss for Preventing inadvertent feeding of an external watchdog
One way to improve the robustness and reliability of the Watchdog triggering process is to leave the triggering GPIO pin in a HiZ state (configured as an input) by default. When you wish to "pet the...
View ArticlePreventing inadvertent feeding of an external watchdog
Most internal watchdog timers found on microcontrollers contain mechanisms to prevent an inadvertent feed, usually requiring the write of a specific key-value to the feed register, although some...
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