Set Flash Voltage

The espefuse set-flash-voltage command permanently sets the internal flash voltage regulator to either 1.8V, 3.3V or OFF. This means a GPIO can be high or low at reset without changing the flash voltage.

Positional arguments:

• voltage - Voltage selection [‘1.8V’, ‘3.3V’, ‘OFF’].

Optional arguments:

• --show-token. Display the eFuse token dump for the write operation before the confirmation prompt. This produces an EFSW token. If the goal is only to obtain the token, press ENTER to abort (no burning will occur). See Token Dump section for more details on token formats and usage.

Note

Setting flash voltage is not supported on ESP32-C5. The tool prints the error set-flash-voltage not supported!.