Will reset reason always be reset caused by Brownout; when starting sketch?

Q&A Forum › Will reset reason always be reset caused by Brownout; when starting sketch?

William Lucid asked 3 years ago

I log WIFI and restart events in my project. I always get the same reset reason when initially starting the sketch or plugging in power. Is this to be expected? Only occurs in the two cases; in normal operation.

This sketch demonstrates the reset reason. Plugging in power or pressing reset produces “Vbat power on reset.” When watchdog event occurs; result is “Software reset CPU.”

Watchdog_Reset_Reason.ino

William

Question Tags: ESP32, Reset reason, Watchdog

4 Answers

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Sara Santos Staff answered 3 years ago

Hi.
Yes. You’re expected to get the same reason when pressing the RST button, starting the sketch, or plugging power.
Regards,
SAra

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William Lucid answered 3 years ago

Thank you Sara for confirming.
Here is sample of what I have so far:
WiFi and Resets of project
I was going to add logging the start of the server; however, it seems to only get repeated with a reset reason Logging server start looks useless to me now.
William

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William Lucid answered 3 years ago

Developed a way to separate ESP32 Start events and Brownout events:
Logging WIFIClientEvents: ESP Start, Brownout, Watchdog, WIFI Connect and WIFI Disconnect

William

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Sara Santos Staff answered 3 years ago

Hi William.
That’s great!
Thank you so much for sharing.
I need to take some time to analyse your code and maybe create a tutorial about that.
Regard,s
Sara