topic Re: Warning -- Freedom Board Crystal/PLL Caution in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Warning-Freedom-Board-Crystal-PLL-Caution/m-p/230326#M4906 <HTML><HEAD></HEAD><BODY><P>Eli,</P><P>Thanks again for contributing!</P><P></P><P>Great job! :smileyhappy:</P></BODY></HTML> Tue, 19 Mar 2013 20:43:30 GMT Monica 2013-03-19T20:43:30Z Warning -- Freedom Board Crystal/PLL Caution https://community.nxp.com/t5/Kinetis-Microcontrollers/Warning-Freedom-Board-Crystal-PLL-Caution/m-p/230325#M4905 <HTML><HEAD></HEAD><BODY><H2 style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><SPAN style="font-weight: inherit; font-style: inherit; font-family: inherit; color: #ff6600;">WARNING</SPAN></H2><P></P><P></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;">If you stumble across the "getting started page" <A _jive_internal="true" data-containerid="2003" data-containertype="14" data-objectid="93960" data-objecttype="102" href="https://community.nxp.com/docs/DOC-93960" style="font-style: inherit; font-family: inherit; color: #3778c7;">FREEDOM BOARD / CORTEX M0+ GETTING STARTED&nbsp; </A>Please take note:</P><P></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><SPAN style="font-weight: bold; font-style: inherit; font-family: inherit;">While working with a large number of Freedom boards in a course,&nbsp; it was observed that the Init Clock Routines would *sometimes* not work.&nbsp;&nbsp;&nbsp; *Some* of the crystals on the freedom boards do NOT like "HIGH_GAIN" mode.&nbsp; </SPAN></P><P></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><STRONG style="font-style: inherit; font-family: inherit;">change the line</STRONG></P><P></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><EM style="font-family: inherit;"><STRONG style="font-style: inherit; font-family: inherit;">&nbsp; pll_init(8000000, HIGH_GAIN, CRYSTAL, 4, 24, MCGOUT);</STRONG></EM></P><P></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><STRONG style="font-style: inherit; font-family: inherit;">to</STRONG></P><P style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;"><EM style="font-family: inherit;"><STRONG style="font-style: inherit; font-family: inherit;">&nbsp; pll_init(8000000, LOW_POWER, CRYSTAL, 4, 24, MCGOUT);</STRONG></EM></P><P><SPAN class="mce_paste_marker"></SPAN></P></BODY></HTML> Tue, 19 Mar 2013 02:12:40 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Warning-Freedom-Board-Crystal-PLL-Caution/m-p/230325#M4905 eli_hughes 2013-03-19T02:12:40Z Re: Warning -- Freedom Board Crystal/PLL Caution https://community.nxp.com/t5/Kinetis-Microcontrollers/Warning-Freedom-Board-Crystal-PLL-Caution/m-p/230326#M4906 <HTML><HEAD></HEAD><BODY><P>Eli,</P><P>Thanks again for contributing!</P><P></P><P>Great job! :smileyhappy:</P></BODY></HTML> Tue, 19 Mar 2013 20:43:30 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Warning-Freedom-Board-Crystal-PLL-Caution/m-p/230326#M4906 Monica 2013-03-19T20:43:30Z