UART communication between BT840F and ESP32

[ysuleiman]

I am trying to send data from BT840F to ESP32 via UART. Which pins of BT840F shall I connect to the corresponding pins of ESP32? I am asking this because I couldn't extract the information from the documentation. I am new to this field. Can anyone please help me? Thanks in advance. By the way, I am using nRF SDK to program BT840F and I am using Arduino IDE to program ESP32. Any help or suggestion will be highly appreciated.

[Kenneth]

Any GPIO pin of the nRF52840 can be used as UART pins, for pin assignments see:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/pin.html

The actual GPIO used is set at compile time through the PSEL registers, for instance see RTS can be set:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/uarte.html#register.PSEL.RTS