https://community.nxp.com/t5/MCX-Microcontrollers/Run-External-Flash/m-p/2394896#M5638 <P><FONT face="times new roman,times">Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/264657">@Ashish-625</a>&nbsp;</FONT></P> <DIV> <P><FONT face="times new roman,times" size="4">Could you please verify whether the pin_mux.c file exists at the following path?</FONT></P> <DIV class="___77lcry0 f10pi13n"> <DIV class="___1hewfwb f10pi13n f7oukh6 f5p0z4x" tabindex="0" role="group" aria-label="Code Preview"> <DIV class="scriptor-component-code-block fjvzYKZBOQTEBVeNTcCZAA== scriptor-codeblock-virtualized" tabindex="-1"> <DIV class="fqvaCab6BxjZuW8O04CgHA== Owa7xR6KHIwC761sWHj6qQ== rqa3uIS1PNtM-i66ssY7mA== nWyma4ayH1Bp-FFwZjzKbQ=="> <DIV class="hIOV6s4S9zs4GAW2auqJPg== _3itoj9fQx-L3Ndzq6DEMIg== Ec7gxQwJdC4VAzAv6OF-Wg=="> <DIV class="Pti0qE9CAcs0Rn2rpCoSSA=="> <DIV class="_2baXIzg0A4C+RWuuiRDdPw== kzqHHNja8SEONvqWMSkOIg== woOjdWapYPFLdK5EyuY9jQ==" tabindex="0" role="textbox" aria-label="Code editor" aria-multiline="true" aria-readonly="true"> <DIV class="EBfP6+29X5gqARCe1Xnd6g== wiFeRBkfdReuqrknziF3ig==" data-line-index="0"><FONT face="times new roman,times" size="4">examples/_boards/mcxn5xxevk/demo_apps/spi/spi_flash/cm33_core0/pin_mux.c</FONT></DIV> </DIV> <DIV class="Vy0Zxqa2ePgXKbZ-XzFTYQ==">&nbsp;</DIV> </DIV> </DIV> </DIV> </DIV> </DIV> </DIV> <P><FONT face="times new roman,times" size="4">In addition, please confirm which MCUXpresso SDK version you are using and whether the spi_flash demo is download based on&nbsp; IAR Embedded Workbench.</FONT></P> <P>&nbsp;</P> </DIV> <DIV>&nbsp;</DIV> <DIV><FONT face="times new roman,times">Thank you.</FONT></DIV> <DIV>&nbsp;</DIV> <DIV><FONT face="times new roman,times">BR</FONT></DIV> <DIV><FONT face="times new roman,times">Alice</FONT></DIV> Tue, 14 Jul 2026 10:37:02 GMT Alice_Yang 2026-07-14T10:37:02Z https://community.nxp.com/t5/MCX-Microcontrollers/Run-External-Flash/m-p/2394343#M5631 <P class=""><SPAN>Hello everyone,</SPAN></P><P class=""><SPAN>I am using the </SPAN><STRONG><SPAN>MCXN547-EVK</SPAN></STRONG><SPAN> development board and trying to interface an external </SPAN><STRONG><SPAN>W25Q64JWTBJQ</SPAN></STRONG><SPAN> flash memory using </SPAN><STRONG><SPAN>Quad SPI (FlexSPI)</SPAN></STRONG><SPAN>. I am building the project with </SPAN><STRONG><SPAN>IAR Embedded Workbench</SPAN></STRONG><SPAN>.</SPAN></P><P class=""><SPAN>While building the </SPAN><SPAN>spi_flash</SPAN><SPAN> example from the MCUXpresso SDK, I encounter the following error:</SPAN></P><PRE><STRONG>CMake Error: Cannot find source file: .../examples/_boards/mcxn5xxevk/demo_apps/spi/spi_flash/cm33_core0/pin_mux.c</STRONG></PRE><P class=""><SPAN>Has anyone encountered this issue before? Could you please help me understand what is causing it and how to resolve it?</SPAN></P><P><SPAN>Any suggestions would be greatly appreciated. Thank you!</SPAN></P><P>&nbsp;</P><P>&nbsp;</P> Mon, 13 Jul 2026 09:59:06 GMT https://community.nxp.com/t5/MCX-Microcontrollers/Run-External-Flash/m-p/2394343#M5631 Ashish-625 2026-07-13T09:59:06Z https://community.nxp.com/t5/MCX-Microcontrollers/Run-External-Flash/m-p/2394896#M5638 <P><FONT face="times new roman,times">Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/264657">@Ashish-625</a>&nbsp;</FONT></P> <DIV> <P><FONT face="times new roman,times" size="4">Could you please verify whether the pin_mux.c file exists at the following path?</FONT></P> <DIV class="___77lcry0 f10pi13n"> <DIV class="___1hewfwb f10pi13n f7oukh6 f5p0z4x" tabindex="0" role="group" aria-label="Code Preview"> <DIV class="scriptor-component-code-block fjvzYKZBOQTEBVeNTcCZAA== scriptor-codeblock-virtualized" tabindex="-1"> <DIV class="fqvaCab6BxjZuW8O04CgHA== Owa7xR6KHIwC761sWHj6qQ== rqa3uIS1PNtM-i66ssY7mA== nWyma4ayH1Bp-FFwZjzKbQ=="> <DIV class="hIOV6s4S9zs4GAW2auqJPg== _3itoj9fQx-L3Ndzq6DEMIg== Ec7gxQwJdC4VAzAv6OF-Wg=="> <DIV class="Pti0qE9CAcs0Rn2rpCoSSA=="> <DIV class="_2baXIzg0A4C+RWuuiRDdPw== kzqHHNja8SEONvqWMSkOIg== woOjdWapYPFLdK5EyuY9jQ==" tabindex="0" role="textbox" aria-label="Code editor" aria-multiline="true" aria-readonly="true"> <DIV class="EBfP6+29X5gqARCe1Xnd6g== wiFeRBkfdReuqrknziF3ig==" data-line-index="0"><FONT face="times new roman,times" size="4">examples/_boards/mcxn5xxevk/demo_apps/spi/spi_flash/cm33_core0/pin_mux.c</FONT></DIV> </DIV> <DIV class="Vy0Zxqa2ePgXKbZ-XzFTYQ==">&nbsp;</DIV> </DIV> </DIV> </DIV> </DIV> </DIV> </DIV> <P><FONT face="times new roman,times" size="4">In addition, please confirm which MCUXpresso SDK version you are using and whether the spi_flash demo is download based on&nbsp; IAR Embedded Workbench.</FONT></P> <P>&nbsp;</P> </DIV> <DIV>&nbsp;</DIV> <DIV><FONT face="times new roman,times">Thank you.</FONT></DIV> <DIV>&nbsp;</DIV> <DIV><FONT face="times new roman,times">BR</FONT></DIV> <DIV><FONT face="times new roman,times">Alice</FONT></DIV> Tue, 14 Jul 2026 10:37:02 GMT https://community.nxp.com/t5/MCX-Microcontrollers/Run-External-Flash/m-p/2394896#M5638 Alice_Yang 2026-07-14T10:37:02Z