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Igor Shirokov
Igor Shirokov
Associate II
April 23, 2018
Question

''Conn_Interval_Min'' and ''Conn_Interval_Max'' in Windows 10 API

  • April 23, 2018
  • 3 replies
  • 1531 views
Posted on April 23, 2018 at 14:18

I'm using BlueNRG-1 and 'throughput' example. My 

BlueNRG-1 is in 'SERVER' role. Windows 10 application is in 'CLIENT' role. But I can not find 'Conn_Interval_Min' and  'Conn_Interval_Max' in Windows 10 API. Where can I find these parameters?

    This topic has been closed for replies.

    3 replies

    Antonio Vilei
    Antonio Vilei
    ST Employee
    April 24, 2018
    Posted on April 24, 2018 at 15:14

    Hello Igor,

    are you using the BLE Throughput example included in the

    http://www.st.com/en/embedded-software/stsw-bluenrg1-dk.html

    ?

    If yes, please notice that you must use two 

    BlueNRG-1 devices, one acting as a server, and the other as a client. The configuration of the client side is independent of the operating system running on your PC (Windows 10 in your case), so you don't need to use Windows 10 API.

    In the source code for the BLE throughput example, you can find 'Conn_Interval_Min' and 'Conn_Interval_Max' used by the client as parameters to the aci_gap_create_connection() function in the Project\BLE_Examples\BLE_Throughput\src\throughput.c source file.

    Best regards,

    Antonio

    Igor Shirokov
    Igor ShirokovAuthor
    Associate II
    April 24, 2018
    Posted on April 24, 2018 at 19:04

    Hello Antonio.

    I need transmit data not to second BlueNRG-1 chip, but to PC on Wndows 10 aplication. Where can I find parametrs there?

    Winfred LU
    Winfred LU
    ST Employee
    April 25, 2018
    Posted on April 25, 2018 at 05:07

    Hi Igor,

    Could you check

    class-of-device registry subkeys and entries that apply to the Bluetooth driver stack?

    https://msdn.microsoft.com/en-us/library/windows/hardware/ff536602(v=vs.85).aspx

     

    Best Regards,

    Winfred

    Winfred LU
    Winfred LU
    ST Employee
    April 25, 2018
    Posted on April 25, 2018 at 05:16

    Hi Igor,

    The registry keys are for class driver's default configurations.

    If you would like to know the application's connection interval setting, it's possible to 

    enable logging and then use BtEtlParse.exe to generate a ComProbe Analyzer capture file.

    BtEtlParse.exe can be found in WDK10.

    Reference:

    https://social.msdn.microsoft.com/Forums/vstudio/en-US/963667f9-c193-447a-ad37-4621fa4c9c6d/how-to-get-current-ble-connection-parameters-connection-interval-etc-for-paired-device?forum=wdk

     

    Best Regards,

    Winfred

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