default BLE channel frequency

RE: default BLE channel frequency

john.ashok — Thu, 23 Sep 2021 13:29:18 GMT

thanks for the info

RE: default BLE channel frequency

Kenneth — Thu, 23 Sep 2021 12:39:08 GMT

The channels are defined by Bluetooth core specifications, and are channels between 2402-2480, in 2MHz steps, as shown in a figure on this page:
https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/bluetooth-smart-and-the-nordics-softdevices-part-1

RE: default BLE channel frequency

john.ashok — Thu, 23 Sep 2021 10:43:25 GMT

Then does this mean central device takes care of the channel frequency?

actually i want confirm that we are not using the frequency channel starting exactly at 2.400 GHz but rather 2.402 GHz and onwards

how to confirm this or is there a way to configure this?

RE: default BLE channel frequency

Kenneth — Thu, 23 Sep 2021 10:40:53 GMT

Hi,

I am not sure if I understand the question. A BLE link is initiated when there is a CONNECT_REQ packets sent from a central device to a peripheral device that is advertising. The CONNECT_REQ packet contain information about the channel map and channel hop, the conneciton interval and other connection parameters. There is no static or default frequency that I can see here.

Kenneth