Kinetis MicrocontrollersのトピックRe: Cycle Counting on Kinetis K64F https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046521#M56893 <HTML><HEAD></HEAD><BODY><P>Hi Fabio,</P><P>you can use it in the debugger (see <A class="link-titled" href="https://mcuoneclipse.com/2018/06/28/measuring-arm-cortex-m-cpu-cycles-spent-with-the-mcuxpresso-eclipse-registers-view/" title="https://mcuoneclipse.com/2018/06/28/measuring-arm-cortex-m-cpu-cycles-spent-with-the-mcuxpresso-eclipse-registers-view/">Measuring ARM Cortex-M CPU Cycles Spent with the MCUXpresso Eclipse Registers View | MCU on Eclipse</A> ) or in the application too (see <A class="link-titled" href="https://mcuoneclipse.com/2017/01/30/cycle-counting-on-arm-cortex-m-with-dwt/" title="https://mcuoneclipse.com/2017/01/30/cycle-counting-on-arm-cortex-m-with-dwt/">Cycle Counting on ARM Cortex-M with DWT | MCU on Eclipse</A>&nbsp;).</P><P>For the later see <A class="link-titled" href="https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuArmTools.c" title="https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuArmTools.c">McuOnEclipseLibrary/McuArmTools.c at master · ErichStyger/McuOnEclipseLibrary · GitHub</A>&nbsp; which is an implementation using the MCUXpresso SDK.</P><P></P><P>I hope this helps,</P><P>Erich</P></BODY></HTML> Tue, 05 May 2020 10:49:27 GMT ErichStyger 2020-05-05T10:49:27Z Cycle Counting on Kinetis K64F https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046520#M56892 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>I would know if there are functions to cycle counting on MCUXpresso SDK.</P><P>I have seen that ARM processors contains&nbsp;a special register called DWT for this purpose.</P><P>Can I use it on my fw release to time elapsed couting or is it meant for debugging only and isn't it a good practice?</P><P></P><P>Thank you very much!</P></BODY></HTML> Tue, 05 May 2020 10:41:47 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046520#M56892 LArmstrong1985 2020-05-05T10:41:47Z Re: Cycle Counting on Kinetis K64F https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046521#M56893 <HTML><HEAD></HEAD><BODY><P>Hi Fabio,</P><P>you can use it in the debugger (see <A class="link-titled" href="https://mcuoneclipse.com/2018/06/28/measuring-arm-cortex-m-cpu-cycles-spent-with-the-mcuxpresso-eclipse-registers-view/" title="https://mcuoneclipse.com/2018/06/28/measuring-arm-cortex-m-cpu-cycles-spent-with-the-mcuxpresso-eclipse-registers-view/">Measuring ARM Cortex-M CPU Cycles Spent with the MCUXpresso Eclipse Registers View | MCU on Eclipse</A> ) or in the application too (see <A class="link-titled" href="https://mcuoneclipse.com/2017/01/30/cycle-counting-on-arm-cortex-m-with-dwt/" title="https://mcuoneclipse.com/2017/01/30/cycle-counting-on-arm-cortex-m-with-dwt/">Cycle Counting on ARM Cortex-M with DWT | MCU on Eclipse</A>&nbsp;).</P><P>For the later see <A class="link-titled" href="https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuArmTools.c" title="https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuArmTools.c">McuOnEclipseLibrary/McuArmTools.c at master · ErichStyger/McuOnEclipseLibrary · GitHub</A>&nbsp; which is an implementation using the MCUXpresso SDK.</P><P></P><P>I hope this helps,</P><P>Erich</P></BODY></HTML> Tue, 05 May 2020 10:49:27 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046521#M56893 ErichStyger 2020-05-05T10:49:27Z Re: Cycle Counting on Kinetis K64F https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046522#M56894 <HTML><HEAD></HEAD><BODY><P>Hi Erich,</P><P>thank you very much&nbsp;for your support and also for your great blog&nbsp;where</P><P>we can learn so many things!</P></BODY></HTML> Tue, 05 May 2020 12:50:07 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Cycle-Counting-on-Kinetis-K64F/m-p/1046522#M56894 LArmstrong1985 2020-05-05T12:50:07Z