Multiple Advertising Sets Error - nRF52832

[Mihir Tailor]

Hello,

I am developing Bluetooth 5.0 application which advertises two different beacon advertising data sets (Each set with different advertising interval) 

I am using PCA10040 (nRF52832 based board) and Softdevice v6.1.0 for this application.

When i have set second advertising data-set with sd_ble_gap_adv_set_configure(&m_adv_handle_2, &m_adv_data_2, &m_adv_params_2) call, i got an error of not having enough memory (NRF_ERROR_NO_MEM).

After that i decreased the Application RAM size multiple times in the linker file ble_app_beacon_gcc_nrf52.ld.

Still i am getting the the same error of not having enough memory.

Kindly suggest me solution.

[Vidar Berg]

Hi,

NRF_ERROR_NO_MEM is returned because there is mot enough memory to configure a new advertising handle. Currently only one advertising set can be configured in the SoftDevice. The solution is to reuse the existing advertising handle you have. 

Couple of notes regarding how to update advertising data while advertising:

1. Pass NULL to the third parameter for sd_ble_gap_adv_set_configure() as it is not possible to change the advertisment parameters while advertising

2. Make sure to swap between two buffers when you update the advertising data. From API documentation: To update advertising data while advertising, provide new buffers to @ref sd_ble_gap_adv_set_configure.

[Mihir Tailor]

Thanks Vidar for your reply.

I was surprised that the new release of Softdevice v6.1.0 does not support the Multiple Advertising Sets feature.

Can you tell me that when this feature will come in the Softdevice?

[Vidar Berg]

Unfortunately, I cannot comment on future plans. If this is an important feature for your application  I suggest you forward this request to our regional sales manager for your area. Send me PM with your location if you don't know who that is.

[Mihir Tailor]

Ok VIdar.

Thanks for your support.

Now I don't have an urgent need for this feature, but this is the feature of Bluetooth 5.0 so latest Softdevice BLE stack which support Bluetooth 5.0 should have.

[Mihir Tailor]

Can you suggest me the other Hardware Module and Softdevice Stack from Nordic that support the following features of Bluetooth 5.0?

1. Multiple Advertisement Sets

2. Periodic Advertisement

3. Chained Advertisement

4. Configurable ATT_MTU Size

[Vidar Berg]

s140/s132 v.6.1.0 is the newest softdevice and supports extended advertising/scanning of up to 255 byte and has configurable MTU size and LL packet size.

http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.softdevices52/dita/softdevices/s130/s130.html?cp=2_3_1 

I'm not aware of any BLE stacks that support all BT5 features.