ble ant+ crash

[hongpal]

Hi nordic.

I use SDK 14.20 and nrf52840 board and s332 softdevice.

Our app has to use ant+ and ble.

My device connect with app. 

App requests device to ant+ scanning.

Problem is here.

Sometimes device disconnected with app. disconnection reason is 0x08. I know It is BLE_BCI_CONNECTION_TIMEOUT.

I do not know the reason. If device only uses ble to connect with app, connection is stable.

Another question is whether the nrf5240 can use s332 soft devices.

I know s332 is for nrf52832. But All of thing i want is well done. 

I do not noticed the problem to communicate by using ble and ant+.

I am sorry. I do not have good english level.

Please let me konw the reason.

[Kenneth]

Hi,

Please check out the ANT search document:
https://www.thisisant.com/resources/an11-ant-channel-search-and-background-scanning-channel/ 

Likely you should use LP search only.

You should use S340 softdevice with nRF52840, but I don't know when it's ready yet.

Best regards,
Kenneth

[hongpal]

Thank you answer.

You said I should use LP search only.

Does this mean Ant + search has to use LP search?

I do not know the mean exactly.

[Kenneth]

To avoid ANT+ search impact active links, then you should only use Low Priority (LP) search.

Best regards,
Kenneth