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Compiler/MSP432P401R: Serial Communication

Yash Gupte
Prodigy 120 points

Part Number: MSP432P401R

Tool/software: TI C/C++ Compiler

Hello,

I am using MSP432 Launchpad to send data serially and viewing it on a serial monitor via my USB.

I plan to make a custom board without the debugger. I would like to know if I can directly connect the RxD and TxD (P1.2,P1.3) to the USB pins on the board ?

  • 0
    TI__Guru**** 244450 points
    Hello Yash

    You cannot connect the TXD and RXD pins of UART to the USB. The USB requires enumeration and protocol which cannot be emulated by UART. You would need a UART to USB converter.
  • 0 in reply to Amit Ashara
    TI__Mastermind 26380 points
    Yash,

    To add to the note above, companies like FTDI specialize in making chips that are UART to USB bridges...so this maybe an option for your custom board:
    www.ftdichip.com/.../FT230X.html

    If you don't want to invest the time and energy designing in a UART to USB bridge , you can always use just the debugger section of the Launchpad by disconnecting the MSP target (remove jumper row) and taking 'custom board' UART pins and connecting it to the (emulation side) of the LP UART pins.

    This way the top half of the LP can act as your UART-USB bridge and talk to a PC.

    -Priya
  • 0 in reply to Priya Thanigai
    Prodigy 120 points

    I would like to know if the ID pin of on board USB (MSP432) must be grounded or left floating if connecting the USB to a USB to UART FTDI bridge?

    I am planning to use FT232R USB UART IC.

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