Exit ANT+ continous scanning mode without stack reset

[FreKrae]

Hi,

I currently have a problem with the continous scanning mode. I implemented the scanning mode that my device searches for the first 4 seconds after power up then picks the Device IDs with the highest RSSI and connects to them. If I power up the device it is working fine. I reset the ANT+ stack after power up then configure my scanning mode then scan for devices and pick my best one. Afterwards I reset the stack another time and open the channels with my found data. (BLE Stack is also running during this process)

If I now tried to do this scanning process during the runtime and reset my stack again I have the problem that my channels won't get any messages. I think the stack reset is responsible for this but I can't figure out how to exit the scanning mode otherwise. If I try to unassign and close channel 0 and then reopen it I get an Channel in wrong state response.

Is there a way to exit the continous scanning mode without a stack reset?

Thanks for your input!

[FreKrae]

I tried to do the same thing with background scanning but got basicly the same results. It seems that there are some issues with timing regarding the channel close/unassign/assign/open.

Is there a way I can be shure a channel is closed before I go to the next step or am I overseeing some other things?

[usamak]

Hi FreKrae,

After closing the scanning channel, could you try waiting for an EVENT_CHANNEL_CLOSED before opening the next channel?

Thanks,

Usama

[FreKrae]

I already tried to do that but that did not work either.

I am now using the background scanning mode instead of the continuous scanning mode combined with sd_ant_search_waveform_set() to get a more messages. With this setup I was able to switch the search on and off during the normal operation of the device.