RE: Configure the Advertising Channel

Nguyen Trong Tuan — Mon, 28 Sep 2020 16:26:23 GMT

oh tks for your reply. I did it. Thank you so much

Best regards!!!!

RE: Configure the Advertising Channel

Jared — Mon, 28 Sep 2020 07:18:14 GMT

Hi,

Note that the definition of the ble_gap_ch_mask_t has the following comment:

* Every channel is represented with a bit positioned as per channel index defined in Bluetooth Core Specification v5.0,

* Vol 6, Part B, Section 1.4.1. The LSB contained in array element 0 represents channel index 0, and bit 39 represents

* channel index 39. If a bit is set to 1, the channel is not used.

Which means that each channel is represented by a bit in the array which has in total 40 bits. In addition the BLE Core spec has the following mapping for the channels:

Which results in you setting the the last byte to = 0b11111011 to RF channel 37 to be the only channel to be used. However RF channel 37 is not the same as channel index 37 which is the advertising channel which "in reality" is RF channel 0. Try to enable one of the advertising channels.

best regards

Jared