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AT+CIPUPDATE example

Posted: Fri Jun 19, 2020 8:10 am
by iw2lsi
Hi all,

we are planning to provide wifi/ble connectivity to our 8bit MCU through an ESP32 with the esp-at firmware and we are looking for a way to update both the 8bit firmware and the (customized) esp-at firmware itself.

Thinking about the second step, it seems that this should be possible using AT+CIUPDATE:
AT+CIUPDATE=[,] Function: set FOTA mode and upgrade to a specific version.

0:normal FOTA
1:SSL FOTA

If using Espressif's AT BIN (/esp-idf/bin/at), AT+CIUPDATE will download a new AT BIN from the Espressif Cloud.
If using a user-compiled AT BIN, users need to make their own AT+CIUPDATE upgrade.

Espressif provides a demo as a reference for local upgrade (/esp-idf/example/at).


but we didn't find any example... and a quick try ends up with a "rom_version error!"

Is there anybody else experiencing this error ? is there an example somewhere ?

thanks for any hints,

Giampaolo