Kinetis MicrocontrollersのトピックRe: MKL27 waits ca. 3Sec befor Startup https://community.nxp.com/t5/Kinetis-Microcontrollers/MKL27-waits-ca-3Sec-befor-Startup/m-p/498304#M31056 <HTML><HEAD></HEAD><BODY><P>Hi</P><P></P><P>It probably still has something to do with the ROM loader not been fully/correctly deactivated, or the NMI pin not being disabed.</P><P><SPAN>Try a reference binary from </SPAN><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fwww.utasker.com%2Fkinetis%2FFRDM-KL27Z.html" rel="nofollow" target="_blank">http://www.utasker.com/kinetis/FRDM-KL27Z.html</A><SPAN> which shows that an immediate start is possible - then compare the flash settings that it has (eg. using debugger) with the ones that you use to identify any differeces.</SPAN></P><P></P><P>Regards</P><P></P><P>Mark</P></BODY></HTML> Tue, 01 Mar 2016 16:54:44 GMT mjbcswitzerland 2016-03-01T16:54:44Z MKL27 waits ca. 3Sec befor Startup https://community.nxp.com/t5/Kinetis-Microcontrollers/MKL27-waits-ca-3Sec-befor-Startup/m-p/498303#M31055 <HTML><HEAD></HEAD><BODY><P>After working with the KL25z without any problems, I had to change to the KL27z. Now while I have no problems at programming the KL27z I have a very strange effect which I don't know where I have to search.</P><P>Every program I write (and also the example Codes) will wait for 3 Secs after reset, before starting up and executing. Now my first thought was that this is caused by the bootloader. So I changed the <SPAN style="color: #51626f; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif;">FTFx_FOPT in the Flash Configuration in the startup_MKL27Z644.S. </SPAN><SPAN style="color: #51626f; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif;">Unfortunately this didn't change the waiting startup behavior.</SPAN></P><P><SPAN style="color: #51626f; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif;">Does anyone else experience this behavior at startup? Or does anyone have an explanation for this behavior?</SPAN></P><P><SPAN style="color: #51626f; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif;">How do I have to disable this behavior?</SPAN></P><P><SPAN style="color: #51626f; font-family: arial, helvetica, 'helvetica neue', verdana, sans-serif;">Thanks in advance.</SPAN></P></BODY></HTML> Tue, 01 Mar 2016 14:15:26 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MKL27-waits-ca-3Sec-befor-Startup/m-p/498303#M31055 TheMnemonic 2016-03-01T14:15:26Z Re: MKL27 waits ca. 3Sec befor Startup https://community.nxp.com/t5/Kinetis-Microcontrollers/MKL27-waits-ca-3Sec-befor-Startup/m-p/498304#M31056 <HTML><HEAD></HEAD><BODY><P>Hi</P><P></P><P>It probably still has something to do with the ROM loader not been fully/correctly deactivated, or the NMI pin not being disabed.</P><P><SPAN>Try a reference binary from </SPAN><A class="jive-link-external-small" href="https://community.freescale.com/external-link.jspa?url=http%3A%2F%2Fwww.utasker.com%2Fkinetis%2FFRDM-KL27Z.html" rel="nofollow" target="_blank">http://www.utasker.com/kinetis/FRDM-KL27Z.html</A><SPAN> which shows that an immediate start is possible - then compare the flash settings that it has (eg. using debugger) with the ones that you use to identify any differeces.</SPAN></P><P></P><P>Regards</P><P></P><P>Mark</P></BODY></HTML> Tue, 01 Mar 2016 16:54:44 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MKL27-waits-ca-3Sec-befor-Startup/m-p/498304#M31056 mjbcswitzerland 2016-03-01T16:54:44Z