https://devzone.nordicsemi.com/f/nordic-q-a/18180/minimum-non-connectable-advertising-interval-limitJust noticed through some experimentation that the SD 7.1 Stack rejects Non-Connectable Advertising Parameters if the interval is less than 152.5msec? Error: NRF_ERROR_INVALID_PARAM Is this a SIG Bluetooth Spec Limit? -DCen-USTelligent Community 13Tue, 13 Dec 2016 10:05:13 GMThttps://devzone.nordicsemi.com/thread/70200?ContentTypeID=1Tue, 13 Dec 2016 10:05:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5c39103b-7c9e-4972-acc9-79d6650ec714FormerMember<p>I see. I double checked, the minimum advertising interval for non-connectable advertising should be 100 ms, no matter if the device is in a connection or not, see gap.h:</p> <pre><code>#define BLE_GAP_ADV_NONCON_INTERVAL_MIN 0x00A0 /**&lt; Minimum Advertising interval in 625 us units for non connectable mode, i.e. 100 ms. */ </code></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/70199?ContentTypeID=1Tue, 06 Dec 2016 18:17:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bbab438d-fce1-4065-ba90-671d756f5ae2Dave_couling<p>Hi Kristin,</p> <p>I agree with you, but that doesn&#39;t seem to be the case when using Non-connectable advertising, while already in connection (Peripheral + Broadcaster). Under this condition the Stack returns Error: NRF_ERROR_INVALID_PARAM if the interval less than 152.5msec?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/70198?ContentTypeID=1Tue, 06 Dec 2016 10:16:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93130627-28c2-4ff8-a8ec-44bb4f0d21ffFormerMember<p>As long as the advertising interval is within the range set by Bluetooth SIG (20 ms to 10.24 s), it should be fine.</p> <p>The example ble_app_beacon in SDK 6.1.0 (S110 v. 7.1.0) uses non-connectable advertising with advertising interval of 100 ms, and it works fine. Which other advertising parameters do you use?</p><div style="clear:both;"></div>