ESP Flash Tool

[mariar]

Hello Everyone,
I hope someone can help me with this topic. I'm trying to use ESP Flash tool in order to flash the bin file on ESP32-S3. But i can't find any documentation concerning ESP32-S3 AT Instruction Set.
Any idea?
And another question : how are ESP32-S3 chips programmed by manufacturers in mass production devices?
Thank you

[ESP_Sprite]

You can find the AT commands in the ESP-AT user guide, but note that ESP chips are not flashed using that protocol. You would do that by putting the chip in download mode and using a flashing tool (e.g. eptool.py from the ESP-IDF sdk, but there's also a standalone SDK for this).

Generally, when manufacturing a device, ESP32-S3 and other ESP chips are programmed using either serial or USB during the testing stage; you'd first load testing firmware onto the product to verify everything works, then you'd flash the final firmware. It's also possible to program them beforehand using a jig, or ordering them pre-programmed from Espressif.

[mariar]

Hello,

In the ESP flash tool there is an option to select ESP32s3, however, there are no AT Binary lists for ESP32s3...

[ESP_Sprite]

Ah, gotcha. I don't think we have released this, as it doesn't really make sense to run the AT firmware on the -S3 given that you can run it on a cheaper -C3 just as well.

[mariar]

as it doesn't really make sense to run the AT firmware on the -S3

I need the specs of the ESP32S3 chip. Any news on when the AT-Firmware will be released?

[ESP_Sprite]

Moving this to the AT forum; possibly people there can answer that question.

[mariar]

Thank you for your cooperation.

[ESP_Sun]

As far as I know, we have no plans to release AT firmware based on the ESP32S3 chip for the time being. If you want to use the ESP32S3 chip, you can directly use the IDF project to develop applications.
Out of curiosity, I would like to know why you must use AT firmware on the ESP32S3 chip instead of the ESP32C3, which is more cost-effective (only for using AT firmware)? If you have a very strong need to use AT firmware on ESP32S3, you can try to contact us on Espressif’s official website for a business evaluation.