topic Re: LPC55XX some beginner questions in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC55XX-some-beginner-questions/m-p/1073757#M41406 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" class="" data-content-finding="Community" data-userid="208781" data-username="jc" href="https://community.nxp.com/people/jc">Jaroslaw Czula</A>,<A _jive_internal="true" data-content-finding="Community" data-userid="208781" data-username="jc" href="https://community.nxp.com/people/jc">Jaroslaw Czula</A></P><P>It seems when config PLL&nbsp; divider , we'd better first reset the divider counter.</P><P>Others can directly config divider.</P><P></P><P>BR</P><P>Alice</P></BODY></HTML> Wed, 13 May 2020 08:30:52 GMT Alice_Yang 2020-05-13T08:30:52Z LPC55XX some beginner questions https://community.nxp.com/t5/LPC-Microcontrollers/LPC55XX-some-beginner-questions/m-p/1073756#M41405 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>It is my first post on this forum, so hello to everyone.</P><P><SPAN class="" lang="en"><SPAN class="" title="">I'm starting the adventure with LPC55xx processors and have some beginner questions</SPAN></SPAN>.</P><P><SPAN class="" lang="en"><SPAN class="" title="">I analyze one example (SDK project lpcxpresso55s28_dev_audio_speaker_bm) and found such&nbsp; sequence</SPAN></SPAN>:</P><P></P><P>&nbsp;&nbsp;&nbsp; CLOCK_SetClkDiv(kCLOCK_DivPll0Clk, 0U, true);<BR />&nbsp;&nbsp;&nbsp; CLOCK_SetClkDiv(kCLOCK_DivPll0Clk, 1U, false);</P><P></P><P>Why divider is set to 1 and reset, and then set to 2 but without reset?</P><P><SPAN class="" lang="en"><SPAN class="" title="">Why is it not set to 2 at once?</SPAN></SPAN></P><P><SPAN class="" lang="en">In SDK API Reference Manual I don't&nbsp;<SPAN class="" title=""> find an explanation.</SPAN></SPAN></P><P><SPAN class="" lang="en"><SPAN class="" title=""></SPAN></SPAN></P><P><SPAN class="" lang="en">Regards,<BR />JarekC</SPAN></P></BODY></HTML> Mon, 11 May 2020 18:47:49 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC55XX-some-beginner-questions/m-p/1073756#M41405 jc 2020-05-11T18:47:49Z Re: LPC55XX some beginner questions https://community.nxp.com/t5/LPC-Microcontrollers/LPC55XX-some-beginner-questions/m-p/1073757#M41406 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" class="" data-content-finding="Community" data-userid="208781" data-username="jc" href="https://community.nxp.com/people/jc">Jaroslaw Czula</A>,<A _jive_internal="true" data-content-finding="Community" data-userid="208781" data-username="jc" href="https://community.nxp.com/people/jc">Jaroslaw Czula</A></P><P>It seems when config PLL&nbsp; divider , we'd better first reset the divider counter.</P><P>Others can directly config divider.</P><P></P><P>BR</P><P>Alice</P></BODY></HTML> Wed, 13 May 2020 08:30:52 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC55XX-some-beginner-questions/m-p/1073757#M41406 Alice_Yang 2020-05-13T08:30:52Z