ESP_Sprite wrote: ↑Fri Sep 30, 2022 1:35 am
At this point in time, your issue is kind-of muddled as you also seem to have run into and solved other issues at this point... Can I summarize the issue as follows:
[*]You get ESP32-Wrover modules that refuse to boot at some point. (Are they really the oldest Wrover modules, and not -E or other newer variants? Please be very specific wrt type number.)
[*]Reading the flash gives no differences between what is flashed and what should be in the flash.
[*]Erasing the flash and re-flashing the (exact same) image makes the thing work again.
There's also a bunch of questions people raised that you never answered:
[*]Can you scan a few QR codes on the modules and post what's in them here?
[*]What flash manufacturer ID do the modules have?
Also:
[*]The first and 2nd log you posted are different in that the 1st has a different calculated checksum every time while the 2nd has the same checksum. What generally is the behaviour you see?
[*]You said you were looking at the LDO powering the ESP. Any results from that research?
Hello ESP_Sprite,
We got feedback from few customers like they are facing same issues like they faced earlier before 6 Months on site. So, We have asked to provide modules to us and then will give all required details again for that module.
Yes, After Erasing Flash or Re-flashing firmware images again then module starts to work again. We have also checked LDO Powering section but didn't find anything which can cause this type of issues.
I will check all details for rest of queries and will send on Monday once we receive that faulty module from one customer site.
Hope that would be fine for you.