topic Solved: K22 GPIOs not reflecting internal registers in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Solved-K22-GPIOs-not-reflecting-internal-registers/m-p/957089#M54933 <HTML><HEAD></HEAD><BODY><P>Solved:<BR />Pin Control Register (PORTx_PCRn) was not set correctly and pins ended up disabled.</P><P></P><P>---<BR />Hi there.</P><P></P><P>I&nbsp;have developed code for&nbsp;a project&nbsp;using the Freedom K22 eval board for testing.<BR />As the production HW is using the K22F128xxx10 MCU (as opposed to the K22F512xxx12 on the FRDM) I changed the clock-setup and -init to FLL and got the production HW up and running.</P><P></P><P>But... the&nbsp;GPIOs does not work (and probably neither do other peripherals but I'm not that far yet).<BR />Debugging a simple main-loop setting and resetting a port pin sets the direction- and output-registers (PDOR &amp; PDDR) correctly but the state is not reflected on the pin. Tried several ports and pins but same result.</P><P><BR />I have checked and double checked the pinmux and setup.</P><P></P><P>What am I missing?</P><P></P><P></P><P>BR<BR />Kim</P></BODY></HTML> Thu, 22 Aug 2019 12:29:40 GMT khlo 2019-08-22T12:29:40Z Solved: K22 GPIOs not reflecting internal registers https://community.nxp.com/t5/Kinetis-Microcontrollers/Solved-K22-GPIOs-not-reflecting-internal-registers/m-p/957089#M54933 <HTML><HEAD></HEAD><BODY><P>Solved:<BR />Pin Control Register (PORTx_PCRn) was not set correctly and pins ended up disabled.</P><P></P><P>---<BR />Hi there.</P><P></P><P>I&nbsp;have developed code for&nbsp;a project&nbsp;using the Freedom K22 eval board for testing.<BR />As the production HW is using the K22F128xxx10 MCU (as opposed to the K22F512xxx12 on the FRDM) I changed the clock-setup and -init to FLL and got the production HW up and running.</P><P></P><P>But... the&nbsp;GPIOs does not work (and probably neither do other peripherals but I'm not that far yet).<BR />Debugging a simple main-loop setting and resetting a port pin sets the direction- and output-registers (PDOR &amp; PDDR) correctly but the state is not reflected on the pin. Tried several ports and pins but same result.</P><P><BR />I have checked and double checked the pinmux and setup.</P><P></P><P>What am I missing?</P><P></P><P></P><P>BR<BR />Kim</P></BODY></HTML> Thu, 22 Aug 2019 12:29:40 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Solved-K22-GPIOs-not-reflecting-internal-registers/m-p/957089#M54933 khlo 2019-08-22T12:29:40Z