Sometimes get ADV report data length is 0 when BLE_GAP_EVT_ADV_REPORT event occur

[Devin Li]

Hi ,

I testing the " nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\examples\ble_central\ble_app_uart_c " sample code with nRF52832 .  Found sometimes get the advertising data length is 0 when BLE_GAP_EVT_ADV_REPORT event occur.  I can be sure that the advertising data content is not empty,because I printed out the advertising data, and the data length, as follows:

I want to know why the data length is 0 when the data content is not empty?

Best Regards,
Devin

[Martin Lesund]

Hi Devin,

What specific have you modified in the "ble_app_uart_c" example?

I assume you are running as central on a nRF52 DK?

Do you have any specific peripheral devices in your environment?

[Devin Li]

Hi Martin,

I have found the reason, when the data length is 0, I get the packet that is scan response.

Because my some peripheral device didn't write the scan response data, so it's actually empty when the central device get

report.

My previous understanding was wrong,  the scan response was ignored.

 

[Martin Lesund]

Hi devin, 

I am glad to hear that you found the reason, and thanks for sharing the explanation.

Have a great day.