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CC2650: How to determine BLE Spec version?

GreenAndGrey
Expert 1060 points

Part Number: CC2650
Other Parts Discussed in Thread: BLE-STACK,

I have a CC2650 that will get connected to different iPhones - how do I determine programmatically which BLE version (or alternately, iOS version) is being used?

  • 0
    TI__Guru** 106705 points
    Hi,

    Can you elaborate on what you mean by BLE version? What Bluetooth Specification features you support is dependent on the BLE SW running on the CC2650.

    Cheers,
    Fredrik
  • 0 in reply to Fredrik K
    Expert 1060 points
    The CC2650 has TI's BLE-Stack v2.1 right now, which I understand supports BLE 4.1. This will be updated to use BLE-Stack 2.2 (& consequently have BLE 4.2 support) in the future. When using my app on different iPhones, the CC2650 needs to know which version of iOS is being used, so that I can accordingly adjust the BLE Connection Interval in my code.
  • 0 in reply to GreenAndGrey
    Expert 1060 points
    Bumping since I'm looking to update to BLE-Stack 2.2.1 shortly.
  • 0 in reply to GreenAndGrey
    TI__Guru** 105180 points
    Since your iOS app presumably knows the version of iOS it is running against, you could define a custom characteristic on the server that you write the iOS version ID to from the phone (client). Your BLE app could then request the desired conn interval based on the value written to this custom char. As an example of a custom char used to control the conn interval request, see the Connection Control Service on the CC2650STK SensorTag in BLE-Stack v2.2.1.

    Beyond that, you could use the HCI_ReadRemoteVersionInfoCmd API to query the LL version of the peer device. I'm not sure if this is a good indicator of the iOS version though, since they presumably could have different iOS versions that support the same BT core spec version.

    Best wishes