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CC2642R: Discovery of service problems

le wang
Prodigy 20 points
Part Number: CC2642R

Hi all 

Is service discovery still something that must be done before BLE can reconnect to a paired device?

If you have to go through it again, is there a way to optimize the time it takes to discover a service?

  • 0
    TI__Guru 57865 points
    Hi,
    Service discovery occurs once the connection has been established (and after pairing if enabled). If you go through the pairing process, the service discovery is not needed on re-connect (called bonding).
  • 0 in reply to J Lindh
    Prodigy 20 points
    hi,

    Tanks for your answer!
    I know the long key will be saved after binding.No pairing process is required to re-connect.
    Does the bind operation also save the service and reconnect without discovering the service?
  • 0 in reply to le wang
    TI__Guru 57865 points
    Hey,
    Correct. The peripheral device will obviously have to advertise in order to to become re-connected by a central. Upon reconnect, devices will directly go into encrypted state and the GATT client will refer to the cached GATT database.