Update data of extended advertisement (BLE5)

RE: Update data of extended advertisement (BLE5)

QuentinD — Fri, 12 Jun 2020 12:07:26 GMT

Hi

It works now.

For this to work, I had to do a ble_advertising_init (...) and then a ble_advertising_conn_cfg_tag_set (...)

Thank you

RE: Update data of extended advertisement (BLE5)

Simonr — Thu, 11 Jun 2020 09:37:27 GMT

Hi Quentin

The following procedure should be sufficient. Stop advertising usingsd_ble_gap_adv_stop, run another advertising_init() function where you change your advertising parameters, and start again. Seeing as you apparently don't have enough memory to do so though, you should update the existing advertising handle. Please see the sd_ble_gap_adv_set_configure documentation on the Infocenter.

Best regards,

Simon

RE: Update data of extended advertisement (BLE5)

QuentinD — Wed, 10 Jun 2020 07:05:13 GMT

Hi

I think it's a good idea but how do you uninitialize the module?
If I set the whole structure to 0 and after that I reinitialize the advertising module , I receive the error 4 (Not enough memory to configure a new advertising handle. Update an existing advertising handle instead)

Thank you

RE: Update data of extended advertisement (BLE5)

Simonr — Tue, 09 Jun 2020 13:24:59 GMT

sd_ble_gap_adv_set_configure() only returns error 9 (NRF_ERROR_INVALID_LENGTH) if the advertising data length is invalid, so in your case, I assume the extended advertising parameter isn't "activated" upon recalling this function. I think you might have to uninitialize and reinitialize the advertising module altogether when going from BLE4 to BLE5 advertisements in order to ensure that extended advertising is initialized correctly.

Best regards,

Simon

RE: Update data of extended advertisement (BLE5)

QuentinD — Tue, 09 Jun 2020 09:30:38 GMT

Hi Simonr

In my application, I used 2 different advertisements. I have a advertisement for BLE5 which countain more data (with extended advertising enabled) and advertise for 1 second. Next, it is a advertisement for BLE4 which advertise for 1 second.

Everything seems to work but I get error 9 from "sd_ble_gap_adv_set_configure()" function which I don't understand why.
The first time I call this function I have no problem (to configure the advertisement BLE4 for example) but after that, if I recall this function to configure the advertisement BLE5 (with new parameters) I have this error …

Can you give me the conditions that can return this error?

Thank you

RE: Update data of extended advertisement (BLE5)

Simonr — Tue, 09 Jun 2020 06:55:39 GMT

Hi Quentin

You're absolutely right, the SoftDevice does take care of putting data into the secondary channels. I guess my explanation was rather lackluster in my previous reply, but it seems like you haven't enabled extended advertising properly. You can check out the Running speed and Cadence application for an example of how to enable extended advertising, and check out this blog post for a more detailed "walkthrough" of the extended advertising setup.

Please also check out this case, which discusses extended advertising in detail.

Best regards,

Simon

RE: Update data of extended advertisement (BLE5)

QuentinD — Mon, 08 Jun 2020 08:01:44 GMT

Hi

I thought that the SoftDevice automatically added the data on the secondary channel when using the extended advertisement: this is not true?

If I have to specify that certain parts of my advertising packet must be in the secondary channels: do you have a function which makes it possible to do that? For exemple, is it possible to set "appearance" on the secondary channels ?

Thank you

RE: Update data of extended advertisement (BLE5)

Simonr — Fri, 05 Jun 2020 12:56:19 GMT

The initial advertisement packet won't be able to exceed 31 bytes, you'll have to offload the rest of the advertisement to the secondary channels. Please check out the S140 SoftDevice API for details on how to do this. Unfortunately, I don't think we have an example that does this already, so you'll have to add this part yourself I'm afraid.

Best regards,

Simon