iOs Disconnection

[Lorens]

Hi, I developed an application with nordic NRF51822 using SoftDevice S110 8.0.0. The APP developer for iOS tells me that the app disconnects after about 2 minutes, while this is not happening with Android or using my Dongle.

He also tells me that using other chip, like cypress, this is not happening. Is it possible that this is because of some firmware parameters to set differently for the connection?

[Locky]

He slightly incorrect it is not a chip level thing. The root cause is actually the crystals on the iPhone which operate slightly out of spec from the BLE specification. You can account for this but increasing your Rx window in your code by setting the accuracy of the LFCLK to 250 or 500.