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According to issue #147, the watchdog functionality of the ESP32 is available to Arduino sketches.
In order to make sure, the sketch is always functional, I want to use the watchdog to reset the chip if it gets stuck somehow. When I call esp_task_wdt_feed() once and then block the loop() thread, nothing happens though.
According to the Task watchdog documentation, the watchdog is supposed to issue a warning but not reset the CPU. For Arduino sketches, I may be better to reset the system instead. Is that possible without manipulating the related watchdog registers directly?
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