ESP32-S2-Mini constantly reboots

[da-markson]

Soultion addresses problem where SOME of the ESP-S2-Mini's would constanly reboot itself, thus never allowing the Access Point to initialize

[softhack007]

🤔 the "solution" basicially disables WiFi.setTxPower(wifi_power_t(txPower)), because trying to set TX power before AP is started will be ignored.

https://github.com/espressif/arduino-esp32/blob/1f038677eb2eaf5e9ca6b6074486803c15468bed/libraries/WiFi/src/WiFiGeneric.cpp#L1407-L1410

I don't think this can be a general solution, because some boards require setting a reduced tx power otherwise wifi will not work.

Its interesting that this solves any problem ... maybe the default TX power is too high.

[softhack007]

As explained (see above) I don't agree with the "solution" because it's just making the TX power feature useless in AP mode.

I think we need a different solution, maybe by only setting TX power when it's different from the default value. Or an extra option in wifi settings, like "default" or "no change".

[da-markson]

I understand that it makes TX power useless, but nonetheless, this solution worked for me. I have nine of the ESP32-S2-mini's and seven of them would constantly reboot when executing "WiFi.softAPConfig(IPAddress(4, 3, 2, 1), IPAddress(4, 3, 2, 1), IPAddress(255, 255, 255, 0));". I didn't debug further because I was working issues outside of the WLED library, but I surmise that maybe there is a bug within the WiFi library for the mini's? I do understand if you don't want to merge this request. I'll just keep a one-off version for my own use. Great product though! Thanks, David Markson *Cell*: (817) 584-4755 *E-mail*: ***@***.***

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On Sat, Dec 14, 2024 at 7:19 AM Frank ***@***.***> wrote: ***@***.**** requested changes on this pull request. As explained (see above) I don't agree with the "solution" because it's just making the TX power feature useless in AP mode. I think we need a different solution, maybe by only setting TX power when it's different from the default value. Or an extra option in wifi settings, like "default" or "no change". — Reply to this email directly, view it on GitHub <#4392 (review)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BMJ3GZRGCOUUXCG3JYZKVE32FQV65AVCNFSM6AAAAABTSZEB4GVHI2DSMVQWIX3LMV43YUDVNRWFEZLROVSXG5CSMV3GSZLXHMZDKMBTHA3TANBRGI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[blazoncek]

@da-markson can you provide crash dump using exception decoder?
Without it this change makes little sense.

[da-markson]

Unfortunately I don't have an external JTAG debugger, so I can't produce a crash dump on the ESP32-S2-mini. Thanks, David Markson *Cell*: (817) 584-4755 *E-mail*: ***@***.***

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On Sat, Dec 14, 2024 at 10:07 AM Blaž Kristan ***@***.***> wrote: @da-markson <https://github.com/da-markson> can you provide crash dump using exception decoder? Without it this change makes little sense. — Reply to this email directly, view it on GitHub <#4392 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BMJ3GZSKD47S5S2YSM4CXEL2FRJSNAVCNFSM6AAAAABTSZEB4GVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNBTGE3DQOBSHA> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[DedeHai]

the IDF has an option to "reduce TX power on brown out", but I am not sure this is enabled in WLED and also I did not check on how that is implemented and setting TX power manually will probably overrule that anyway.
what could be a solution to this: enable a timer that persists between reboots (RTC peripheral has something like that, at least I saw it in an IDF example). It could be used to detect boot-loops and reduce TX power level-by-level to a defined minimum. It is more of a hack though than a real solution, as the real solution would be to fix the hardware with a capacitor to avoid brownout.

[softhack007]

Unfortunately I don't have an external JTAG debugger

@da-markson could you check if your S2 board still works when you just comment out the line with WiFi.setTxPower(wifi_power_t(txPower)) ?
This way we could verify that setTxPower has no other side-effects that we did not consider yet (like reducing TX power of STA which might still scan for networks).

[blazoncek]

@da-markson you do not need JTAG to get crash dumps. connect USB serial, add -D WLED_DEBUG, add monitor_filters = esp32_exception_decoder and monior serial output using PIO

[blazoncek]

BTW I have several Lolin S2 Mini and all of them work as expected. Perhaps there is a HW issue with your boards.

[da-markson]

I will complete all the requests after the holidays as all my ESP32's are currently running in my light display. Thanks, David Markson *Cell*: (817) 584-4755 *E-mail*: ***@***.***

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On Sat, Dec 14, 2024 at 2:33 PM Blaž Kristan ***@***.***> wrote: @da-markson <https://github.com/da-markson> you do not need JTAG to get crash dumps. connect USB serial, add -D WLED_DEBUG, add monitor_filters = esp32_exception_decoder and monior serial output using PIO — Reply to this email directly, view it on GitHub <#4392 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BMJ3GZTHDHJBI5JIWENOGKL2FSIYVAVCNFSM6AAAAABTSZEB4GVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNBTGMZTMNJYGM> . You are receiving this because you were mentioned.Message ID: ***@***.***>