How to use 2 UARTS in nrf52840

RE: How to use 2 UARTS in nrf52840

Jakub Rzeszutko — Mon, 18 Sep 2017 13:09:32 GMT

Hi Moog,

You can start with an example I've recently prepared: devzone.nordicsemi.com/.../

Basically you can have two combinations: UART0 + UARTE1 or UARTE0 + UARTE1.

RE: How to use 2 UARTS in nrf52840

endnode — Fri, 08 Sep 2017 20:09:04 GMT

First of all you can red full description of UART registers including starting addresses here in product specification (preliminary). But why aren't you using Nordic nRF5 SDK drivers and config files? It's so easy to configure any peripheral with it, you don't need to bother with any addresses then. See e.g..\examples\peripheral\uart\pca10056\blank\config\sdk_config.h file from nRF5 SDK v14.

RE: How to use 2 UARTS in nrf52840

Moog — Fri, 08 Sep 2017 18:28:10 GMT

How to use UARTE1 then? And what the base address for that? Any working example will be helpful? I want to use both UART's but don't know how to configure them.

RE: How to use 2 UARTS in nrf52840

endnode — Fri, 08 Sep 2017 18:20:13 GMT

UARTE0 is EasyDMA enabled instance of UART0 so you can use only one of them at the time.