Kinetis MicrocontrollersのトピックRe: K02 SysTick ISR https://community.nxp.com/t5/Kinetis-Microcontrollers/K02-SysTick-ISR/m-p/412652#M23428 <HTML><HEAD></HEAD><BODY><P>Hello Darwin Smith:</P><P></P><P>I guess you are using a custom board for the K02. If that is the case please revise that the NMI pin (PTA4) is not in low state by an external signal during Power-ON / Reset. If possible place a pull up resistor.</P><P></P><P>Then also related to the NMI pin there could be an issue in debug mode, see this document by colleague Alistair:</P><P></P><P><A href="https://community.nxp.com/docs/DOC-244787">Interrupts appear to be disabled when debugging.pdf</A> </P><P></P><P>Let us know if the issue persists.</P><P></P><P>Regards!</P><P>Jorge Gonzalez</P></BODY></HTML> Tue, 29 Sep 2015 17:03:42 GMT Jorge_Gonzalez 2015-09-29T17:03:42Z K02 SysTick ISR https://community.nxp.com/t5/Kinetis-Microcontrollers/K02-SysTick-ISR/m-p/412651#M23427 <HTML><HEAD></HEAD><BODY><P>I have code developed using the for the K02FN64VFM10 in which I am using the SysTick to generate an ISR.&nbsp; On a FRDM-K22F board the code executes and I can see that ISR gets services.&nbsp; However, when I down load it onto the K02 target the code executes but the SysTick ISR is not serviced.&nbsp; I'm not sure why this is happening.</P></BODY></HTML> Fri, 25 Sep 2015 15:23:31 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K02-SysTick-ISR/m-p/412651#M23427 darwinsmith 2015-09-25T15:23:31Z Re: K02 SysTick ISR https://community.nxp.com/t5/Kinetis-Microcontrollers/K02-SysTick-ISR/m-p/412652#M23428 <HTML><HEAD></HEAD><BODY><P>Hello Darwin Smith:</P><P></P><P>I guess you are using a custom board for the K02. If that is the case please revise that the NMI pin (PTA4) is not in low state by an external signal during Power-ON / Reset. If possible place a pull up resistor.</P><P></P><P>Then also related to the NMI pin there could be an issue in debug mode, see this document by colleague Alistair:</P><P></P><P><A href="https://community.nxp.com/docs/DOC-244787">Interrupts appear to be disabled when debugging.pdf</A> </P><P></P><P>Let us know if the issue persists.</P><P></P><P>Regards!</P><P>Jorge Gonzalez</P></BODY></HTML> Tue, 29 Sep 2015 17:03:42 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K02-SysTick-ISR/m-p/412652#M23428 Jorge_Gonzalez 2015-09-29T17:03:42Z