Does the ESP8285 SoC have a factory boot loader?

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sfranzyshen
Posts: 2
Joined: Mon Jan 26, 2015 11:45 pm

Does the ESP8285 SoC have a factory boot loader?

Postby sfranzyshen » Thu Apr 18, 2019 2:01 am

I know this seams like a newbie question but does the esp8285 SoC come boot strapped with a boot loader within it's internal flash from the factory?
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Prinfor
Posts: 1
Joined: Sun May 12, 2019 9:07 pm
Location: Europe

Re: Does the ESP8285 SoC have a factory boot loader?

Postby Prinfor » Sun May 12, 2019 9:30 pm

Hello sfranzyshen!
I suppose that internal system ROM in the chip is located at 40000000 and contains basic system functions. In case if you have sdk please find a file "eagle.rom.addr.v6.ld" and it lists all the functions in there. That allows uart and download routines to program an external flash. I think It reads the 3 GPIO boot mode pins.
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