sending data from nRF5340 to Raspberry PI

[tim3in]

How can I send data from nRF5340 to Raspberry Pi? Do I need  nRF52840 Dongle dongle attached to raspberry pi? What functions should be used to send from nRF5340 and receive on Raspberry Pi?

[tim3in]

Ok thanks. Is the source code for the Heart Rate Monitor (HRM) demo application available as described in link infocenter.nordicsemi.com/index.jsp

[wass]

For nRF5340, this is where you can get started 
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fstruct_nrf53%2Fstruct%2Fnrf5340.html
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/getting_started.html

I can keep posting link, but you can also take the time to explore all the doc first, I know it's overwhelming but you need to take the time, not sure what your goal is, just learning as a hobby or you need to finish a school project, the approach is different.
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_nrf5340.html