https://community.nxp.com/t5/LPC-Microcontrollers/Flexcomm-serial-single-pin-TXD-usage/m-p/2039807#M57648 <P>Hi there,</P><P>I don't have much experience in configuring Flexcomm and pin ports for LPC5504. I have the pin FC3_TXD_SCL_MISO_WS available but the rest of the FC3 serial port pins are being used as simple PIO/ Digital Input Output pins (Function=0).</P><P>I was wondering if it is possible to use only the Flexcomm 3 TXD pin for&nbsp; communication (basically sending debug information) while keeping the rest of the pins for other functions like DIO.</P> Fri, 07 Feb 2025 08:43:44 GMT pejo 2025-02-07T08:43:44Z https://community.nxp.com/t5/LPC-Microcontrollers/Flexcomm-serial-single-pin-TXD-usage/m-p/2039807#M57648 <P>Hi there,</P><P>I don't have much experience in configuring Flexcomm and pin ports for LPC5504. I have the pin FC3_TXD_SCL_MISO_WS available but the rest of the FC3 serial port pins are being used as simple PIO/ Digital Input Output pins (Function=0).</P><P>I was wondering if it is possible to use only the Flexcomm 3 TXD pin for&nbsp; communication (basically sending debug information) while keeping the rest of the pins for other functions like DIO.</P> Fri, 07 Feb 2025 08:43:44 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Flexcomm-serial-single-pin-TXD-usage/m-p/2039807#M57648 pejo 2025-02-07T08:43:44Z https://community.nxp.com/t5/LPC-Microcontrollers/Flexcomm-serial-single-pin-TXD-usage/m-p/2040260#M57652 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/232719">@pejo</a>&nbsp;</P> <P>Yes, you can use only the FC3_TXD pin for communication while keeping the other Flexcomm 3 (FC3) pins as GPIO. The LPC5504 allows configuring individual pins for different functions within the Flexcomm peripheral, so you don’t need to enable the full UART interface.</P> <P>BR</P> <P>Harry</P> Sat, 08 Feb 2025 02:07:01 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Flexcomm-serial-single-pin-TXD-usage/m-p/2040260#M57652 Harry_Zhang 2025-02-08T02:07:01Z