How to implement timeslot observer based on ble_app_hrs?

[eddy]

Greetings,

I have a peripheral (S110) , when it is connecting to a central, it also need to scan another broadcaster (beacon) to obtain its RSSI and send to the central. So I tried to use the Nordic GitHub project Timeslot Oberver example on ble_app_hrs. So I copied the code from \nRF51-multi-role-conn-observer-advertiser-master\observer to \ble_app_hrs , and merged the two main() functions. But it didn't work. And I found if i commented advertising_start(), it can print advertising_report. And if i uncommented advertising_start(), it printed nothing. What's the problem and how can I do? Many thanks!

[eddy]

Yes, you're right. After I commented the print function in the event handler, it worked. So thanks a lot! But I found another problem, the RSSI in this example is always 0. Do you know why?

[Hung Bui]

Hi Eddy,

I'm glad that it worked now.

If you have question different from the question from the initial post, please create a new question. It will make it easier for other users to find information should it be useful for them.

[adriand]

Hi, quick question. Would it be difficult to add scan response retrieving (so make the scanner active) to this examples?

[Hung Bui]

Hi Adriand, I'm not 100% sure if it is possible, because there is a timing requirement to send scan response right after you receive the advertising packet. I'm not sure if we use timeslot and wait for the radio signal call back to send the scan response it would fit inside the receiving window on the advertiser.

I would suggest you to use the S130 instead.

[adriand]

Hi, thanks. But I'm 100% sure that I'm scanning actively with github.com/.../observer example. I'm getting responses and even print them. So now, I'm trying the other way - I'm trying to add connectable mode to nrf_observer and some service. I think, I'm almost there.. I'm connected, I can read GATT Generic and Attribute Services. And active scanning is being done "in the background". I just thought maybe it would be easier to add active scanning to hrs example. I want to scan very rarely, lets say just every 10 seconds for 1 second. Do you think S130 would be better? I don't need full central functionality (like connection init)..