Change Channel Numbers before advertise

[Ashiq Mohammed]

I am developing Beacon using nRF52832, I want to send advertise using different Channel numbers.

To implement Channel Diversity I want BLE to transmits in three advertisements channels (37, 38 and 39), the receiver will checks the RSSI
in the different channels. Please help in code how we can change to different Channel before advertise.

Regards,

Ashiq Mohammed

[Simon]

The default behavior of the softDevice is to advertise on channel 37, 38 and 39 respectively, as shown in the illustration below.

However, it is possible to mask advertising channels using the field ble_gap_adv_params_t.channel_mask by setting the respective bit to 1 (at least one advertising channel must be used).

UPDATE (9/14/2018): Changed the answer, since it was wrong initially

Best regards, Simon

[Ashiq Mohammed]

Thanks Simon.Is there any way to scan the RSSI value for a specific channel(37, 38, &39) in receiving end? I am using Raspberry PI B+ to scan this beacon using Python code, I want to differentiate RSSI values from theses three channels and will be used for indoor positioning algorithm. Any suggestions?

[Simon]

See below for an updated answer on the initial question. Regarding the second question, I am not confident enough about the workings of Raspberry PI in order to give you a sufficient answer. Try posting you question on a Raspberry PI related forum.

Best regards, Simon