Is it possible to read tech details from the MCU?

[fphilip.On]

Hello,

I'm wondering, is it possible to read some identification details from the MCU through a sketch?
I have a board that is labelled "ESP32-WROOM-32" but I can't perform a Wi-Fi scan.
I'm assuming that I haven't selected the correct board in the Arduino IDE.
But which one is the correct one?
I'm desperate at the moment.
Thanks for any help.

[lbernstone]

Certainly. You can see how arduino-esp32 does it using esp_chip_info.h in ESP.getChipModel(). Esptool can also show you this info, and won't let you upload code written for a different variant onto a device.

[fphilip.On]

That is very interesting - TY.
Sounds worth looking into it.

Is it advisable to add the ESP-IDF extension to my Code/PlatformIO and test it there?
(I think the extension is very space hungry)

[fphilip.On]

-> Ibernstone: Is there perhaps an example somewhere of the use of "esp.getchipmodule()" which could clone?

[fphilip.On]

I installed the esptool on Linuix Mint through

Code: Select all

sudo apt install esptool

After the installation was complete, I tried to get some information from the ESP; but wasn't able to get anything.
e.g.

Code: Select all

esptool -p /dev/ttyUSB0 flash-id

or

Code: Select all

esptool -p /dev/ttyUSB0 chip-id

.
Every time I get an explanation message how to use esptool.

I following the online documentation https://docs.espressif.com/projects/esp ... index.html without any success.
Am I too stupid to use this tool?

[Sprite]

The commands are flash_id and chip_id, so with an underscore rather than a minus.