Determining amount of SRAM (ESPTOOL-597)

[grymoire]

Is your feature request related to a problem?

I have several ESP32-S3-WROOM modules with differing amounts of FLASH and SRAM. I can use esptool.py to get the amount of flash memory. Is there a way I can use esptool (or python) to determine the amount of SRAM as well?

Describe the solution you'd like

Have chip_id command (or some other command) report the size of SRAM on the chip.

Describe alternatives you've considered

If there is some location in memory that can tell me this, that would be great. If not, perhaps a JTAG interface?

Additional context

I'm using a esp-prog board and a flexypin-based adaptor to connect to the castellated modules without soldering them. I want to make sure I solder the right modules onto my board.

[radimkarnis]

Hi @grymoire,
just to clarify - you probably mean PSRAM (not SRAM), right?
SRAM is on the chip die and its size doesn't change (e.g. all ESP32-S3s have 512KB of SRAM).

If you do - I am sorry, but PSRAM size autodetection is currently not possible. Please see espressif/esp-idf#9101

[radimkarnis]

I am closing this feature request because of the reasons explained above.

[grymoire]

Can ESPTOOL read and write PSRAM? If not, a trivial program could run and test how much PSRAM is on a WROOM module by writing to a location and testing if it worked.

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On Mon, Jan 30, 2023 at 10:01 AM Radim Karniš ***@***.***> wrote: I am closing this feature request because of the reasons explained above. — Reply to this email directly, view it on GitHub <#826 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAX3WUAMXUHJM2WUK4H5V7DWU7JTZANCNFSM6AAAAAAUCN7PYE> . You are receiving this because you were mentioned.Message ID: ***@***.***>