ESP32 Forum

Posted: **Wed Oct 02, 2019 11:32 pm**

Hi Experts,

I am curious about about boot switch connected to GPIO #0 for Boot Mode Selection.
I can flash the board without press and holding the boot switch, why this switch is important and needed if I am able to flash without doing anything to GPIO #0?

Thank you.

Posted: **Fri Oct 04, 2019 7:57 am**

Normally, the reset and GPIO0 are handled by some smart circuitry that allows your PC to reset the ESP32 and put it in download mode. This circuitry, however, doesn't work in all cases (e.g. virtual machines have issues) so the buttons are a fallback option.

Posted: **Sat Oct 05, 2019 10:28 am**

Thanks ESP_Sprite, good info.

ESP32 Forum

[solved] BOOT Switch (Boot Mode Selection) is it needed?

[solved] BOOT Switch (Boot Mode Selection) is it needed?

Re: BOOT Switch (Boot Mode Selection) is it needed?

[solved] Re: BOOT Switch (Boot Mode Selection) is it needed?