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Analog Loopback test for MibSPI

Avinash K
Prodigy 90 points
Other Parts Discussed in Thread: HALCOGEN

Hi,

Can anyone provide the detailed document  for Analog(/Digital) Loopback test for MibSPI (TMS570).

Thanks&Regards,

Avinash K

  • 0
    TI__Genius 9015 points

    Hello Avinash,

    I have forwarded your question to one of our experts.  Due to end of year holidays and vacations the response may be delayed.

  • 0 in reply to John Hall
    TI__Expert 4610 points

    Hi Avinash,

    Please refer to 'Test Features' section under MIBSPI category in the TRM. Also, if you are using Halcogen, you can find examples of drivers to enable/disable digital/analog loopback in the mibspiEnableLoopback function.

    Regards,

    Praveen

  • 0 in reply to Praveen Kumar Ravichandran
    Prodigy 90 points

    Hi Praveen,

    Thanks for suggesting about HALCOGEN tool.

    Could you please help me get more elaborated idea about loop back test, e.g. can I induce all error at a time or I have to induce one by one, what should be the wait time to verify that error got induced etc.

    Do you have any example code for that.

    Thanks

    Avinash

  • 0 in reply to Avinash K
    Intellectual 505 points

    Hi,

    An example code is available in example. (mibSpiDma.c) Loop back test is used in this example. You can look.

  • 0 in reply to hans gutenberg
    TI__Expert 4610 points

    Hello Avinash,

    Can you please elaborate on what kind of errors you are planning to induce? and how is it related to the loopback?

    If you are looking for examples of loopback test, you can refer to the example pointed by Hans in the thread above

     

    Regards,

    Praveen

  • 0 in reply to Praveen Kumar Ravichandran
    Prodigy 90 points

    Hello Praveen/Hans,

    Thanks for reply...

    Here I would like to perform I/O Loopback Test ,particularly for Analog  through Tx and Rx pin.

    Need to Self Test the MibSPI module by Inducing Errors such as BITERR, DESYNC, PARERR, TIMEOUT, DLENERR and ERR_SCS_PIN. (Induce using IOLPBKTSTCR register)

    My query is, can I induce all errors at a time or I have to induce one by one, what should be the wait time to verify that error got induced.

    Regards,

    Avinash

  • 0 in reply to Avinash K
    Prodigy 90 points

    Hi ,

    I have successfully implemented I/O Loopback test for Analog through TX pin and
    verified the below cases,
    1. Checking the Loopback Connection through the Transmit Data and Receive data (TX data == RX data).
    2. Inducing ChipSelect Errors one at a time and verifying the corresponding Flag.
    3. Inducing Errors such as  DE-SYNC Error, Data Length Error and Timeout Error, BIT Error & Parity Error and verifying the corresponding Flags,

    Note: For DE-SYNC Error,Data Length Error and Timeout Error to occur nENA pin should be functional.

    Thanks for support....

    Regards,
    Avinash K