ESP32 Forum

Hello. Is there any software or hardware changes that I can do to use GPIO 9 and GPIO 10 (Pin D2 and D3) for UART ? When I program the esp32-wroom-32 DEVKIT-C to use pin 9 and 10 for UART, the controller starts resetting continuously . I need to use the third uart in my project, so I will be glad to know if there is any way to use it .

PS: I am aware of the fact that GPIO 9 to 10 are not recommended to use as per the datasheet. Would like to know if there is away that i can achieve this by modifying anything - hardware or software wise.

Thanks

You can re-route any UART to use any GPIO (but do consider the fact that some are input-only, and the fact that some indeed are used for flash), so there's no need to use exactly these pins.

Hi Ramm, aren't these pins for internal flash use for wrover modules? (could that be true with wroom as well?). Just in the slight case you will upgrade to wrover, it's a good idea to stay clear GPIO7 thru 11.