nrf52850 empty PDU initialization

[Thinking_HyunSoo]

Hi

Hi I’m currently working with the given nordic project “nrf52-ble-long-range-demo”

I check peripheral and central BLE devices are transmitting emptyPDU packet after they are connected.

I got some questions about emptyPDU.

Where the emptyPDU is initialized in the project file? and How can i inject a data into the emptyPDU?

[bjorn-spockeli]

Where the emptyPDU is initialized in the project file?

 The empty PDUs are autmatically sent by the SoftDevice to maintain the Bluetooth connection when the application does not have any data to send. 

How can i inject a data into the emptyPDU?

If you mean send data over BLE, then I suggest that you take a look our BLE tutorial regarding characteristics and how to notify data, see https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial