Some problems about reconnction

[Caesarzhou]

Hi，I would like to know how it works when reconnecting after a timeout disconnection，I didn‘t find the answer after reading Bluetooth 5.4 specification.

[Jakob Ruhe]

Hi,

I think some more context would be helpful to answer your question. But in general it works like this.

A Central can connect to a Peripheral that is sending out Connectable Advertising Messages. A Central needs to scan the air and send the Connect Request immediately after an Advertising Message was sent, because that is when the Peripheral is listening.

So when a connection is lost, the Peripheral needs to start Advertising again and the Central has to start scanning for these messages again.

I hope this clarifies something!