Peripheral disconnection Handling at BLE softdevice layer

[Swetika]

How BLE knows about the peripheral disconnection when there is no data send and receive from application?

[Max C.]

The RF link between central and peripheral is always "checked" by the devices at lower levels of the bluetooth stack because there is always a minimal data exchange (at a predefined timings) between devices also when there is no data exchange at application level (the code you directly write);

These "predefined timings" are defined by the GAP connection parameters, in which you specify:

• minumum and maximum connection interval;
• slave latency;
• connection supervisor timeout;

[Swetika]

Thanks for reply Max C.