nRF51822 use without external oscillatorhttps://devzone.nordicsemi.com/f/nordic-q-a/43321/nrf51822-use-without-external-oscillatorHello, i found a few articels about it but none of them where helpfull for me. I just want to use my nRF51822 Module from Raytac without an external 32khz oszillator. I tried a few examples without success. I use SDK 12.3, my application is builden-USTelligent Community 13Mon, 13 Jun 2022 15:19:19 GMTRE: nRF51822 use without external oscillatorhttps://devzone.nordicsemi.com/thread/372208?ContentTypeID=1Mon, 13 Jun 2022 15:19:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96717b6c-8a5d-48e3-bec7-2885c9506170drutis<p>can it be used without 16mhz external oscillator too ?</p> <div class="LTRStyle" style="direction:ltr;display:none;text-align:left;" id="WidgetFloaterPanels"> <div style="display:none;" id="WidgetFloater"> <div id="WidgetLogoPanel"><span id="WidgetTranslateWithSpan"><span>TRANSLATE with </span></span> <span id="WidgetCloseButton" title="Exit Translation">x</span></div> <div id="LanguageMenuPanel"> <div class="DDStyle_outer"><span class="DDStyle" id="__LanguageMenu_header">English</span> <div style="left:0;position:relative;text-align:left;"> <div style="position:absolute;"> <div class="DDStyle" style="display:none;" id="__LanguageMenu_popup"> <table id="LanguageMenu" border="0"> <tbody> <tr> <td><a href="#ar">Arabic</a></td> <td><a href="#he">Hebrew</a></td> <td><a href="#pl">Polish</a></td> </tr> <tr> <td><a href="#bg">Bulgarian</a></td> <td><a href="#hi">Hindi</a></td> <td><a href="#pt">Portuguese</a></td> </tr> <tr> <td><a href="#ca">Catalan</a></td> <td><a href="#mww">Hmong Daw</a></td> <td><a href="#ro">Romanian</a></td> </tr> <tr> <td><a href="#zh-CHS">Chinese Simplified</a></td> <td><a href="#hu">Hungarian</a></td> <td><a href="#ru">Russian</a></td> </tr> <tr> <td><a href="#zh-CHT">Chinese Traditional</a></td> <td><a href="#id">Indonesian</a></td> <td><a href="#sk">Slovak</a></td> </tr> <tr> <td><a href="#cs">Czech</a></td> <td><a href="#it">Italian</a></td> <td><a href="#sl">Slovenian</a></td> </tr> <tr> <td><a href="#da">Danish</a></td> <td><a href="#ja">Japanese</a></td> <td><a href="#es">Spanish</a></td> </tr> <tr> <td><a href="#nl">Dutch</a></td> <td><a href="#tlh">Klingon</a></td> <td><a href="#sv">Swedish</a></td> </tr> <tr> <td><a href="#en">English</a></td> <td><a href="#ko">Korean</a></td> <td><a href="#th">Thai</a></td> </tr> <tr> <td><a href="#et">Estonian</a></td> <td><a href="#lv">Latvian</a></td> <td><a href="#tr">Turkish</a></td> </tr> <tr> <td><a href="#fi">Finnish</a></td> <td><a href="#lt">Lithuanian</a></td> <td><a href="#uk">Ukrainian</a></td> </tr> <tr> <td><a href="#fr">French</a></td> <td><a href="#ms">Malay</a></td> <td><a href="#ur">Urdu</a></td> </tr> <tr> <td><a href="#de">German</a></td> <td><a href="#mt">Maltese</a></td> <td><a href="#vi">Vietnamese</a></td> </tr> <tr> <td><a href="#el">Greek</a></td> <td><a href="#no">Norwegian</a></td> <td><a href="#cy">Welsh</a></td> </tr> <tr> <td><a href="#ht">Haitian Creole</a></td> <td><a href="#fa">Persian</a></td> <td></td> </tr> </tbody> </table> </div> </div> </div> </div> </div> <div id="CTFLinksPanel"><span id="ExternalLinksPanel"><a id="HelpLink" title="Help" href="https://go.microsoft.com/?linkid=9722454" rel="noopener noreferrer" target="_blank"> </a> <a id="EmbedLink" title="Get this widget for your own site"></a> <a id="ShareLink" title="Share translated page with friends"></a> </span></div> <div id="FloaterProgressBar"><span id="ProgressFill"></span></div> </div> <div style="display:none;" id="WidgetFloaterCollapsed"><span>TRANSLATE with </span></div> <div style="display:none;" id="FloaterSharePanel"> <div id="ShareTextDiv"><span id="ShareTextSpan"> COPY THE URL BELOW </span></div> <div id="ShareTextboxDiv"><!--a id="TwitterLink" title="Share on Twitter"> <img id="TwitterImg" /></a> <a--> <a id="EmailLink" title="Email this translation"></a> </div> <div id="ShareFooter"><span id="ShareHelpSpan"><a id="ShareHelpLink"></a> </span> <span id="ShareBackSpan"><a id="ShareBack" title="Back To Translation"></a> Back</span></div> </div> <div style="display:none;" id="FloaterEmbed"> <div id="EmbedTextDiv"><span id="EmbedTextSpan">EMBED THE SNIPPET BELOW IN YOUR SITE</span> <a id="EmbedHelpLink" title="Copy this code and place it into your HTML."></a> </div> <div id="EmbedTextboxDiv"></div> <div id="EmbedNoticeDiv"><span id="EmbedNoticeSpan">Enable collaborative features and customize widget: <a href="http://www.bing.com/widget/translator" rel="noopener noreferrer" target="_blank">Bing Webmaster Portal</a></span></div> <div id="EmbedFooterDiv"><span id="EmbedBackSpan">Back</span></div> </div> </div><div style="clear:both;"></div>RE: nRF51822 use without external oscillatorhttps://devzone.nordicsemi.com/thread/169367?ContentTypeID=1Mon, 04 Feb 2019 17:08:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a8464688-b3e4-48d3-9c30-2423c5c284a9MaxRPEng<p>Hello,</p> <p>it works well, thank you so much. <br />by the way where can i find informations like these? it is for a nrf beginner not easy to get started whith basics like that.</p> <p></p><div style="clear:both;"></div>RE: nRF51822 use without external oscillatorhttps://devzone.nordicsemi.com/thread/169337?ContentTypeID=1Mon, 04 Feb 2019 14:51:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4644802f-5662-4a4e-adb7-f370613f98c6bjorn-spockeli<p>HI Max,&nbsp;</p> <p>you need to set the&nbsp;<span>NRF_CLOCK_LFCLKSRC configuration&nbsp;,&nbsp;defined in pca10028.h, to use the&nbsp;NRF_CLOCK_LF_SRC_RC and not the&nbsp;NRF_CLOCK_LF_SRC_XTAL, i.e&nbsp;</span></p> <p><pre class="ui-code" data-mode="c_cpp">#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_RC, \ .rc_ctiv = 16 \ .rc_temp_ctiv = 2, \ .xtal_accuracy = 0}</pre></p> <p>Best regards<br />Bjørn</p><div style="clear:both;"></div>