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CC1352P: Advertisement end detection

Kamlesh Parihar1
Prodigy 80 points
Part Number: CC1352P
Other Parts Discussed in Thread: BLE-STACK

Hello forum,

My application do the below activities:

1. Advertise packet for 1100 milliSecond

2. After 1 second it enable scanning and wait for response from other device.

3. Repeat the above steps whenever required.

My Questions:

  1. Is there any method by which I can detect whether advertisement ended or not.
  2. What should be the ideal process/steps to run advertisement and scanning smoothly one by one like both should not interrupt each other?
  3. When should i enable/disable advertisement?
  4. When should i enable/disable scanning?

Details about my project

  1. CC1352P BLE
  2. SDK version - simplelink_cc13x2_26x2_sdk_4_20_01_03
  3. Multi role project from ble5stack
  4. IAR 8.50.5 IDE

Request you to kindly help me with the steps.

  • 0
    TI__Genius 14845 points

    Hi Kamlesh,

    Assigning an expert to comment. 

    Thanks, 
    Elin 

  • 0
    TI__Guru* 82431 points

    Hi Kamlesh,

    1. Did you see the documentation for GapAdv_setEventMask()? If you set the GAP_ADV_EVT_MASK_END bit you will get an event after each advertisement ends.

     

    2. You can activate scanning and advertising at the same time. Please:

    i) Set the scan interval longer than the scan window to allow some time for advertisements. E.g. set scan interval to 50 ms and scan window to 30 ms.

    ii) Ideally set the advertisement equal to the scan interval or higher. 

    Remember, if there is a conflict, scanning will be prioritized.

    You can read more about the scanning and advertisement parameters in the Scanning and Avertising SimpleLink Academy lab:

    3. You can enable advertisements after the GAP device init done event.

    4. You can enable scanning after the GAP device init done event.

  • 0 in reply to Marie H
    Prodigy 250 points

    Hello Marie,

    Suppose if I am advertising 10 packets at a time then control comes 10 times in  GAP_ADV_EVT_MASK_END event. 

    I have one more doubt. Can a blocking code affect rf communication as I am using some blocking code also during scanning.

  • 0 in reply to Kamlesh Parihar
    TI__Guru* 82431 points

    Hi Kamlesh,

    1) It depends on how many channels you advertise on. If you advertise on all three channels your would get GAP_ADV_EVT_MASK_END when the device has sent the packet on channel 37, 38 and 39. 

    2) Yes. I would not recommend using blocking code along with the BLE-Stack.