Formula to calculate ADC_VREF fuse

[ginodecock]

Hi,

Using the function adc2_vref_to_gpio(GPIO_NUM_25) I was able to measure the internal reference voltage.

In my case it is 1,127V.

What is the formula to calculate the value that I have to enter for the efuse using espefuse.py?

The following doesn't work
./espefuse.py --port COM21 burn_efuse ADC_VREF 1127

Thanks,
Gino

[WiFive]

https://github.com/espressif/esptool/bl ... se.py#L312