Select the secondary channels of BLE

[j_delsol_catie]

Hello,

I need your help about BLE channels. Currently, I use only the primary channel 38 for advertising data but, when the data are sent, I don't have the information of secondary channels (except the type, LE Coded, 1M, 2M).

Can we get this information using the BLE APIs ?
And, can we select  the secondary channels ?

Environment :
Nordic SDK with Zephyr 3.7.99
SoftDevice BLE controller.

Thanks in advance.

Best regards,

[Kazi Afroza Sultana]

Hello,

 The primary channels are used for advertising then after establishing connection we use secondary channel to send data. In general, channel 37, 38 and 39 are only used for advertising, while channel 0-36 are used for connections. You would like to set secondary channel as peripheral or central?

[j_delsol_catie]

Hello,

Thanks for your answer.

I would like to set secondary channel as peripheral and, if possible, I will need to select the secondary channels to send advertising data.

Thanks in advance.

Regards,

Julien

[Kazi Afroza Sultana]

Hello,

Primary cannel is mostly used for advertising/scanning, secondary for connection. However, it is also possible to advertise on secondary channel. Then it is only using extended advertising. 

Thanks,

BR
Kazi

[j_delsol_catie]

Hello,

yes I use the extended advertising but I would like to know if we can to select or configure the secondary channel where the data will be sent. Currently, I feel like it's random.

Thanks,

Best regards,

Julien