ESP32 Forum

Posted: **Tue Jul 05, 2016 1:07 pm**

SD_DATA3/SPIWP/GPIO10/HS1_DATA3/U1TXD pin is used for external SPI Flash in ESP-WROOM-03 module.
So there is no possibility to use the pin as uart U1TXD.
Is it possible to confugure UART1 to any GPIO, as mentioned in ESP-WROOM-03_Specifications ?
How to do it?

Posted: **Wed Jul 06, 2016 9:39 am**

Yes, the UART signals are part of the GPIO connection matrix and can be remapped to any GPIO pin.

Posted: **Wed Jul 06, 2016 3:00 pm**

Ok.
How to do this?
For example, how to tie uart1-tx function to GPIO5 ?
Which register is responcible for that?
Which number I should write to the register?
Is there macros for this purpose?

ESP32 Forum

Is it possible to use uart TX1 in ESP-WROOM-03 module?

Is it possible to use uart TX1 in ESP-WROOM-03 module?

Re: Is it possible to use uart TX1 in ESP-WROOM-03 module?

Re: Is it possible to use uart TX1 in ESP-WROOM-03 module?