BLE Connection

[arfhamza]

Hello, I'm new to this devices.
I have several NRF52840 devices and i want to connect them to a Raspberry PI via BLE.
I'm not using sensors yet, I just wanna establish a simple connection between the nrf52 devices and the raspberry so that i can send random data and store it in a txt file using the RaspPI.
Can anyone help me ? 

Thank you

[Bjørn Kvaale]

These three links could be helpful: link 1, link 2, link 3.