how to solve device boot loop

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puppetmaster886
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how to solve device boot loop

#1 Post by puppetmaster886 » 19 Jul 2018, 15:43

Hi, I made a mistake on the device configuration and I assigned a device to a GPIO that is used for the flash.
Now I get a boot loop and do not know how to solve it.
It reboots before the wifi appears, it has the serial port disabled and the reset pin also disabled.
I can upload a new version of software with different default configuration but I still get the boot loop.
I suppose that a solution will be to upload new software and that delete the device configuration, but I do not know how to do it.

Thanks.

TD-er
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Re: how to solve device boot loop

#2 Post by TD-er » 19 Jul 2018, 19:00

You could connect GPIO-0 to GND and press reset. This will force the flash mode when booting and then you can erase the entire flash.

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grovkillen
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Re: how to solve device boot loop

#3 Post by grovkillen » 19 Jul 2018, 19:00

You can upload a blank bin file. I got some here: https://www.dropbox.com/s/g8i2gr26t09l9 ... s.zip?dl=1
ESP Easy Flasher [flash tool and wifi setup at flash time]
ESP Easy Webdumper [easy screendumping of your units]
ESP Easy Netscan [find units]
Official shop: https://firstbyte.shop/
Sponsor ESP Easy, we need you :idea: :idea: :idea:

ayasystems
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Re: how to solve device boot loop

#4 Post by ayasystems » 23 Jul 2018, 00:17

Link Rx and TX pin before power on
If Rx and TX is joined during boot the settings will be cleared to original values

Try it

puppetmaster886
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Re: how to solve device boot loop

#5 Post by puppetmaster886 » 24 Jul 2018, 05:19

@ayasystems I tried connecting the RX to TX as you suggested, but it does not work.

I forget to mention that I am working with and 8285, I do know if that could the reason because it does not work....


@grovkillen, @TD-er, Thanks for your answers.
I search but I do not find how to erase the flash or upload bin directly to the board or how to erase the flash

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grovkillen
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Re: how to solve device boot loop

#6 Post by grovkillen » 24 Jul 2018, 07:12

You just flash the blank bin as you would flash a firmware bin.
ESP Easy Flasher [flash tool and wifi setup at flash time]
ESP Easy Webdumper [easy screendumping of your units]
ESP Easy Netscan [find units]
Official shop: https://firstbyte.shop/
Sponsor ESP Easy, we need you :idea: :idea: :idea:

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