Pin connection of second UART interface with nRF52840

[Vikas Bhatt]

There are two UART interfaces in nRF52840:

We have refer to nRF52840 and nRF52840 DK materials, but we found only one UART connection reference.

We want to know how to connect the second UART because there is no other reference material with us.

Can you share the GPIO configuration of the nRF52840 for our better understanding?

[Vidar Berg]

Hello,

The SDK has not assigned any default pins for the UARTE1 instance, so you can just select some GPIOs that are available on your board. You should however avoid using the pins recommended for low frequency operation:

(ref. Pin assignments and UARTE Pin configuration)

Best regards,

Vidar