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

I lied about you’ll never seeing a power-on reset in your sketch …
↓↓↓ Complete description, time index and links below ↓↓↓
In the previous video I’ve told you that you would never see a power-on reset in your sketch running on an Arduino Nano Every, because the bootloader on the SAM D11 would issue an UPDI reset after the power-on (link below). That was a lie.
So now we’ll explore when exactly you’ll see a power-on, respectively, UDPI reset in your sketch running on the ATmega4809, and what role the bootloader on the SAM D11, the USB interface and the serial monitor/plotter play.
00:00 Intro - I lied to you and I can’t live with that
00:36 The lie - you’ll never see an power-on reset
02:00 Breadboard - a Nano Every and five LEDs
02:42 Sketch - lighting a LED for each type of reset
06:34 Demo I - power-on, upload and serial monitor
09:34 Summary - when does what kind of reset occur
10:52 Demo II - serial plotter differs from serial monitor
12:06 Wrap-up - next up are brownout resets, bye
Tutorials • Tutorials
Arduino megaAVR Watchdog & Resets, e.g. Nano Every ATmega4809 • Arduino megaAVR Watchd...
My code drive.google.com/drive/folder...
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