https://community.nxp.com/t5/MCX-Microcontrollers/Output-UART-data-on-Arduino-Pins-on-MCXN947/m-p/2388811#M5595 <P><SPAN data-teams="true">I was trying to output UART data through Arduino pins :P4_3/FC2_UART_RXD-ARD_D0 / P4_2/FC2_UART_TXD-ARD_D1 instead of using internal debugger (MCU-Link). Based on that I changed the pin mux and tried to test with simple loopback test. But it not at all working. I even tried with different pins. Am I missing some configuration setting other than Mux?<BR /><BR />I am attaching my project for reference. Looking forward for help.</SPAN></P> Wed, 01 Jul 2026 07:02:20 GMT Muthappan_Viswanthan 2026-07-01T07:02:20Z https://community.nxp.com/t5/MCX-Microcontrollers/Output-UART-data-on-Arduino-Pins-on-MCXN947/m-p/2388811#M5595 <P><SPAN data-teams="true">I was trying to output UART data through Arduino pins :P4_3/FC2_UART_RXD-ARD_D0 / P4_2/FC2_UART_TXD-ARD_D1 instead of using internal debugger (MCU-Link). Based on that I changed the pin mux and tried to test with simple loopback test. But it not at all working. I even tried with different pins. Am I missing some configuration setting other than Mux?<BR /><BR />I am attaching my project for reference. Looking forward for help.</SPAN></P> Wed, 01 Jul 2026 07:02:20 GMT https://community.nxp.com/t5/MCX-Microcontrollers/Output-UART-data-on-Arduino-Pins-on-MCXN947/m-p/2388811#M5595 Muthappan_Viswanthan 2026-07-01T07:02:20Z