RE: is it possible to recognize device side , if ble disconnected host has gone to sleep or it has got device bonding infos deleted?

Hung Bui — Fri, 23 Oct 2020 14:19:31 GMT

Hi,

Please clarify what you meant by "host", did you mean the central device ?

1. If the device enters sleep mode and doesn't keep the connection, you should receive BLE_HCI_CONNECTION_TIMEOUT on the peer

2. If the central device lost bond information and it request new bond and it's not accepted by the peripheral, the peripheral will send "Pairing not supported" . Disconnection or not it depends on the application.

I would suggest you to use a sniffer trace to get deeper information about the connection and how it's terminated.

RE: is it possible to recognize device side , if ble disconnected host has gone to sleep or it has got device bonding infos deleted?

awneil — Fri, 23 Oct 2020 10:31:32 GMT

The Status Codes are defined by the Bluetooth SIG - you could check to see if there are any which give the information you require.

Of course, it depends on the Host as to what codes are actually sent ...