scanning and advertising

[Milan]

Hi Team,

Is it possible to scan on one channel and advertise on another channel?

Say node-A will scan on ch-37 and advertise on ch-38 while node-B will scan on ch-38 and advertise on ch-37.

Something like joining Tx of one to Rx of other kind of functionality.

I am using S130 soft device in all the nodes.

Regards,

Milan Joshi

[Øyvind Karlsen]

Hi,

You can do this, have a look at the Advertiser observer example. It is based on a different SoftDevice and SDK, but the idea is still the same.

Best regards,

Øyvind

[Milan]

Hi Øyvind, Thanks for reply. I am not unable to map the needed behavior in the example you suggested. Where is the code for fixing channels to scan and observe?

[Øyvind Karlsen]

Hi,

Have a look at the BTLE_CHANNEL_MAP and how it is used, please refer to this github search result.

[Milan]

Thanks.. This is helpful!

[Milan]

typedef struct { uint8_t ch_37_off : 1; /**< Setting this bit to 1 will turn off advertising on channel 37 */

          uint8_t ch_38_off : 1;  /**< Setting this bit to 1 will turn off advertising on channel 38 */

          uint8_t ch_39_off : 1;  /**< Setting this bit to 1 will turn off advertising on channel 39 */

    } ble_gap_adv_ch_mask_t;

Comment says that "Setting this bit to 1 will turn off advertising on channel 37/38/39". Will it stop scanning too on the same channel ?

I am really confused. I want advertising and scanning on the fixed channels so that when device A is advertising on ch-37 the other device B will be scanning on ch-37. Also when device B is advertising on ch-38, device B will be scanning on ch-38. Is this possible to implement?