ESP32 Forum

Hello.
Documentation for ESP32-C3 says: GPIO2 is strapping Pin and have to be set to 1 for SPI Boot and Download Boot.
But in schematic for official dev board (https://dl.espressif.com/dl/schematics/ ... 00915A.pdf , https://dl.espressif.com/dl/schematics/ ... 10126A.pdf) there is no pull up resistor for GPIO2.
Is this wrong schematic for dev board or how does it works without pull up for gpio2?

Thank you.

That's an interesting observation. I asked the docs team if they could clarify this.

I could explain a bit: in face GPIO2 will not affect booting up, but if GPIO2 state is not certain, the glitches of GPIOs will become a little different depending on GPIO2 state. Therefore we hope customer to set fiexd GPIO2 state at starting-up, we decide to include it as a strapping pin.
We will consider if to modify dev board to prevent such confusion.