a questions about burn mode

[Zxc123456]

I use the ESP32_Devkitc_V4 development board. Why the board is not in burn mode？I still can download th bootload core.I looked up information for esp32 datasheet. It say when board in burn mode the GPIO0 must be pull-down。So how do i know the GPIO0 status？

[commando_j]

On your kit, GPIO 0 is pulled up internally and has a button to pull down the IO when you need it.

[Zxc123456]

Thanks for your reply.My question is i'm not push the button.i still can download the core for the board.But the datasheet say's if you will download core the GPIO0 must be pull down.So i'm confused.

[WiFive]

It also has a automatic boot mode circuit, check schematic

https://github.com/espressif/esptool/wi ... bootloader

[Zxc123456]

Many thanks for your advice. Such is the case.Have learned.