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MSP432E401Y: Problem with UART communication

Josue Pareja
Expert 1605 points

Part Number: MSP432E401Y
Other Parts Discussed in Thread: MSP-EXP432E401Y

Hi, I have a problem with the "uart_echo_MSP_EXP432E401Y_nortos_ccs " example from "simplelink_msp432e4_sdk_2_20_00_20". Once I upload the code to the uC the PC is not able to stablish communication with any available port. As you can see in the image once I connect the board to the PC two new ports appear (COM 15 and 16), but a  Putty terminal is not able to read or send data to them, neither the CCSv8 terminal tool.

What can be the cause of this problem?,

Thanks. 

  • 0
    TI__Mastermind 22640 points
    Hello Josue,

    How did you configure you Putty settings?

    Please refer the Readme for the right terminal settings.

    Thanks,
    Sai
  • 0 in reply to Sai Reddy
    Expert 1605 points

    Hi Sai, I do not know what did you mean by " refer the Readme", but here is how I  configured it:

    Here is also what I get when I try to open the port (COM 15 or 16) in Matlab:

    Thanks

  • 0 in reply to Sai Reddy
    Expert 1605 points
    By now I am returning to my TM4C129, the stellaris virtual serial port works well, but I am still having the problem with the MSP432E401Y, (got the same error with the two boards that i bought). Any advice will be really helpful.
    Thanks
  • 0 in reply to Josue Pareja
    Guru 42775 points
    I have no problem uisng putty with my MSP432P401R.

    If you use CCS and open the terminal, It will present you with the 2 options from the XDS110.

    Note that if you tried using CCS for this, it grabs onto the port and won't let go until you close CCS.
  • 0 in reply to Josue Pareja
    TI__Mastermind 22640 points

    Hello Josue,

    I just tried the example and it works for me. The following are the details.

    Hardware:

    • MSP-EXP432E401Y - with default jumper setting

    Software:

    • SimpleLink MSP432E4 SDK v2.20.0.20
      • ./examples/nortos/MSP_EXP432E401Y/driverlib/uart_echo/

    Tools:

    • CCS Desktop v8.0
    • Tera Term v4.89
      • Terminal settings used:
        • Port: XDS110 Class Application/User UART (COM53)
        • Baud: 115,200 baud
        • Data: 8 bit
        • parity: none
        • Stop: 1 bit

    Output:

    You could use Putty too as long as the terminal settings are as shown above.

    Are you doing anything different.

    Thanks,

    Sai

  • 0 in reply to Sai Reddy
    Expert 1605 points
    Hi Say, are you using MSP-EXP432E401R or MSP_EXP432E401Y uC?, I got confused with your hardware specifications, but I will try with TeraTerm.
    Thanks for your answer.
  • 0 in reply to Josue Pareja
    TI__Mastermind 22640 points
    You are right. Its MSP-EXP432E401Y. I will edit the above post.

    Thanks,
    Sai
  • 0 in reply to Sai Reddy
    Expert 1605 points

    Hi Sai, Hi Keith, I solved the issue, the problem was ( I do not know if is correct to interpretate it like this) the version of the XDS110 driver. I believe this because before installing CCSV8 I already had installed CCSV6 on my PC, so I thought that this version of CCS installed the XDS110 driver that works for the MSP432P401R launchpad which has a TMC41294 chip on it, but the MSP432E401Y launchpad has a TM4C129E on board, so I unistalled the previous version of the XDS110 and install it again from "SimpleLink MSP432E4 SDK v2.20.0.20".
    Thanks for your help

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