Update data of extended advertisement (BLE5)

[QuentinD]

Hello

I would like to use the extended advertisement feature of BLE 5 and sometimes update the data.

My code works but there is one of your functions which returns me an error code which disturbs a little.
When I call the "ble_advertising_advdata_update(...)" function, there is function "sd_ble_gap_adv_set_configure(...)" which returns error 9 (NRF_ERROR_INVALID_LENGTH).

I notice that if adv_data is smaller than 32 bytes, I have no error but if it is larger then I have error 9 ...

However I use the "extended" functionality so I should be able to exceed 31 bytes of adv_data right?

[Simonr]

Hi

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

[QuentinD]

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