Arduino megaAVR Watchdog & Resets, e.g. Nano Every ATmega4809 @robertssmorgasbord
Arduino megaAVR Watchdog & Resets, e.g. Nano Every ATmega4809  @robertssmorgasbord
Uploaded July 2023 | Updated September 2026, 3 days ago
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 youtube.com/playlist?list=PLwq-2MnM58FKn3920rc1V0qoTsQDheTIw
Arduino Nano Every: Four Hardware Serial Ports – Without Additional Hardware youtu.be/yG_ialcawho
My code drive.google.com/drive/folders/18kQkXufSikIGcKkURMdtULBR5HYaDQHs?usp=sharing

#arduino #arduinonano #avr #microcontroller #reset #tutorials #tutorial #how-to #robertssmorgasbord
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Roberts Smorgasbord |

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

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