How to inject sending time in packet in peripheral BLE module?

RE: How to inject sending time in packet in peripheral BLE module?

Simon — Tue, 10 Mar 2020 13:56:29 GMT

Could you continue the discussion in this thread: https://devzone.nordicsemi.com/f/nordic-q-a/58122/nrf52850-empty-pdu-initialization?

RE: How to inject sending time in packet in peripheral BLE module?

Thinking_HyunSoo — Thu, 27 Feb 2020 05:16:54 GMT

So far, I can transmit data in advertising packet. But the problem is once peripheral and central BLE devices are connected, they transmit empty PDU each other, and there is no way to put data in the empty PDU. then I cannot get time value for TOA or TDOA..

RE: How to inject sending time in packet in peripheral BLE module?

Simon — Mon, 24 Feb 2020 16:04:45 GMT

I am sorry for the long delay, I have been quite busy lately. I see that you have discussed this in other Devzone tickets in the meantime. Have you made any progress on this?

Best regards,

Simon

RE: How to inject sending time in packet in peripheral BLE module?

Thinking_HyunSoo — Mon, 10 Feb 2020 11:36:09 GMT

HI, thanks for replying

please never mind about wireshark issue.

So far I understood how to add custom data to adv_data. Then how can I get the sending time of advertising packet from peripheral beacon? I want to store sending time data in adv_data.

RE: How to inject sending time in packet in peripheral BLE module?

Simon — Mon, 10 Feb 2020 10:05:03 GMT

[quote user=""]I'm trying to inject the time when the advertising packet is sent to the central BLE module, but I'm struggling to add "sending time" data into the advertising_data_set function.[/quote]

Could you try to add the field p_manuf_specific_data in the struct adv_data. There you can add your custom data, such as "sending time" data. Take a look at the function advertising_init() in the example ..\nRF5_SDK_16.0.0_98a08e2\examples\ble_peripheral\ble_app_beacon\main.c, where you can see how to add manufacturer-specific data to your advertising packet. Make sure to not exceed the maximum amount of data, as specified here, then you may have to remove name_type or flags.

[quote user=""][/quote]

I will sniff this advertising packet with wireshark and I want to check the time that i sent in the sniffed packet. then I can get the sending time and arriving time of the advertising packet.

I am not sure what you are trying to say here. Are you struggling to sniff the packet using Wireshark, and need some help to get it working? If so, could you be more specific about the problems?

Best regards,

Simon