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Original question:

CC2642R: cJTAG & UART

CC2642R: UART pin identification

Yogesh Nadarge
Prodigy 110 points
Part Number: CC2642R

Tool/software:

Could you please help me which pin is TX(transmitting) & which is RX(receiving)  in below snap if I want to use UART on these pins on CC2642R:
I tried to search in datasheet but it not mentioned clearly.
  • +1
    TI__Expert 5000 points

    Hi !

    Could you share the link/document where you found this table ?
    If you are using Code Composer Studio, you can configure which pins play which role in the syscfg file. For example, in the basic_ble project, I can see that DIO 20/4 is used for TX and DIO 22/3 is used for RX.

    Kind regards,
    Maxence

  • 0 in reply to Maxence Mathieu
    Prodigy 110 points

    Hi, Above mentioned table is from CC2642R datasheet. Is it possible to configure DIO2  & DIO3 as  TX & RX respectively through CC2642 JTAG as we're using it in our design already or these pins are fixed for TX & RX in hardware itself?

  • 0 in reply to Yogesh Nadarge
    TI__Expert 5000 points

    Hi,

    I'm not sure what you mean by configuring the pins through the CC2642 JTAG. You can configure your pin layout using the .syscfg file in Code Composer Studio. You first need to unlock the pin layout by clicking "Show board view" in the top right corner, and "use custom board"

    Once that's done you can change the UART pins to any pin you want in "Serial Interfaces" > "UART":

    Kind regards,
    Maxence