nRF21540EK integration with nRF5340dk

[matt_m]

Hi there,

We are trying to integrate an nRF21540EK shield onto our nRF5340DK. Following the instructions on the following link (https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_radio_fem.html#ug-radio-fem-nrf21540-ek-programming) we were able to set up the hardware but we are struggling to find a guide on how to configure the software.

We are seeking to use the nRF21540EK in conjunction with the "Bluetooth: Peripheral UART" sample found in the nRF connect SDK and would like to be able to control the gain and antenna select functions on the nRF21540.

Thanks,

Matt

[matt_m]

Thanks Kazi, and what about the antenna port selection?

[Kazi Afroza Sultana]

Hello Matt,

In nRF21540 DK, there are two antenna ports such as ANT1 and ANT2. The two antenna ports enable applications using antenna diversity and can be selected using pin ANT_SEL. ANT_SEL pin is used to select which of the two antenna interface is used during RX and TX. You can find this in product specification https://infocenter.nordicsemi.com/topic/ps_nrf21540/keyfeatures_html5.html?cp=7_0_0 . 

Thanking you.

Best Regards,

Kazi Afroza Sultana