ESP32 with multiples flash memory (IDFGH-11334)

[PabloGarciaJaen]

Answers checklist.

• [X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• [X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

Hello,

I am developing and ESP32 with 2 memory flash. I want to upload a "bootloader" code in one of them and the main code in the other one. The first memory, at one point of its code, it will indicate that the ESP32 must jump to the other flash to continue with the code.

Is this possible? Is there any example?.

Thanks

[igrr]

No, this is not supported in ESP-IDF, all the executable code has to be in one flash chip.

(Technically, this is possible in ESP32 — some code could be added to the 2nd stage bootloader to remap the GPIOs to another SPI flash chip. But this is not something that IDF supports. You can try to do it yourself, following some comments in https://github.com/espressif/esp-idf/issues/1205)