https://devzone.nordicsemi.com/f/nordic-q-a/1210/connections-clarificationNew to BLE and nRF51822. I need some explanation and clarification of connections and connection intervals. Can I get a overview of how the nRF51822 or answer some questions? Is it correct that using the sd_ble_gap_ppcp_get() is how to get the connectionen-USTelligent Community 13Thu, 02 Jan 2014 14:56:36 GMThttps://devzone.nordicsemi.com/thread/5614?ContentTypeID=1Thu, 02 Jan 2014 14:56:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0b63258-d29c-41a5-81a1-4bc7dc15274cOle Morten<p>I&#39;d suggest you take a look at <a href="https://devzone.nordicsemi.com/index.php/what-is-connection-parameters">this for an explanation of connection parameters</a> and how that works.</p> <p>If your low frequency crystal isn&#39;t running correctly, you&#39;ll normally see a hang when enabling the softdevice. If the precision you give when initializing the softdevice is not correct, you may see link losses due to the timing going bad at some random later time. You can check the reason for a disconnect by looking at the reason field of the ble_evt_gap_disconnected_t struct. If you suspect this, I&#39;d recommend trying different values, and possibly move to the RC oscillator to see if that helps. Take a look at <a href="https://devzone.nordicsemi.com/index.php/what-low-frequency-clock-sources-can-i-use">this for the different low-frequency clock source options</a>.</p><div style="clear:both;"></div>