RE: UART EASy DMA api calls

Einar Thorsrud — Wed, 23 Feb 2022 12:56:30 GMT

Hi Dan,

The UART/UARTE is completely independent from the SoftDevice, so there is no need to consider that in this regard (unlike some other peripherals which must be used via SoftDevice APIs). However, the nRF5 SDK includes drivers for the UART/UARTE peripheral, which I suspect is what you are interested in.

You can refer to the UART Example for a simple example of how to use the UARTE peripheral. As you want to use DMA, you want to use the UARTE peripheral. This is automatically selected when you specify what you want to use DMA by for instance setting UART0_USE_EASY_DMA to 1 in sdk_config.h.

To ensure low power consumption you can disable the UART when not needing it, and enable it again afterwards.