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TMS320C6748: Selecting Debug probe for TMS320C6748 LCDK

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Expert 1410 points
Part Number: TMS320C6748

Hello,

I am developing a DSP system in TMS320C6748 LCDK kit. The fastest rate at which a variable gets updated is 60KHz. I want to get fastest debug probe from TI. Suggest the one and how do we understand if this debug probe is taking in values at required fast rate and updating the CCS environment. I have no idea how to get best debug probe that updates values to CCS fastly.

Thanks in advance

Shalini

  • 0
    TI__Guru**** 161600 points
    Hi,

    Have a look ath those two:
    www.ti.com/.../tmdsemu560v2stm-ue
    www.ti.com/.../tmdsemu560v2stm-u

    The should have the most features, from the ones listed in development tools section in TMS320C6748 product folder.

    Best Regards,
    Yordan
  • 0
    TI__Guru* 84110 points
    Shalini,

    What you are asking for is not the way to use the JTAG debug probe. Your eyes would not be able to keep up with viewing a 60kHz signal on a single display element in a memory window. CCS is a debug environment; for direct data capture, there are oscilloscopes and logic analyzers - CCS gives a much more in-depth view of the DSP and its operation so you can develop and then fine tune your algorithm to accomplish your application's requirements.

    The JTAG debug probe is more like the pedals and steering wheel and tires of a car; you need to control the action and see the results as the driver but you do not need to notice each piston moving or spark plug firing. You do want to catch when something goes wrong, or better to figure out why that happened. The DSP is designed to run fast enough to handle your 60kHz data rate and to do a lot of work on that data; the JTAG probe is designed to let you control and monitor the activity at a human speed.

    On the web page where you can order the LCDK is a link for the XDS200 JTAG pod which would be easily good enough for what you will actually need to do. You can also choose the XDS110. The emulators that Yordan listed are our fastest and most advanced, unfortunately the C6748 does not have the embedded trace memory buffers that enable the STM features; the XDS560 emulators would indeed be faster than the others for moving large chunks of data, but I doubt that would be anything like what you appear to be considering.

    Regards,
    RandyP
  • 0 in reply to RandyP
    Expert 1410 points
    Thank you Sir.

    You have resolved my query of using debug probe appropriately. My issue is can I view FFT graphs of data coming in at rates of 60KHz from the CCS environment. I tried buffering data and viewing but still I dont get fast reponse as in simulink.

    Thanks in advance
    Shalini