Arduino megaAVR Watchdog & Resets, e.g. Nano Every ATmega4809 

The megaAVR 0-series watchdog timer and reset controller …
↓↓↓ Complete description, time index and links below ↓↓↓
A little over a year ago we’ve unlocked all four hardware serial (USART/UART) ports of the Arduino Nano Every, respectively, ATmega4809 MCU (link below). Now it’s time to have a look the watchdog timer and reset controller.
We start out with the reset controller, determining which kind of reset occurred and performing a software reset. Then we move on to the watchdog timer, which we’ll use in normal, respectively, window mode and … to perform watchdog resets.
00:00 Intro - megaAVR reset controller and watchdog timer
00:36 Reset controller - datasheet and Nano Every details
08:25 Reset code - what reset the MCU & software reset
17:43 Watchdog timer (normal mode) - datasheet
19:40 Watchdog code (normal mode) - setting and resetting
25:46 Watchdog timer (window mode) - datasheet
27:27 Watchdog code (window mode) - setting and resetting
33:18 Hardware reset - pulling the reset pin low
35:15 Wrap-up
Tutorials • Tutorials
Arduino Nano Every: Four Hardware Serial Ports - Without Additional Hardware • Arduino Nano Every: Fo...
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