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TMS320F28377D Evaluation model-Query

Janani Baskar
Intellectual 330 points

Other Parts Discussed in Thread: TMDSDOCK28379D, TMDXIDDK379D, BOOST-DRV8711, CC3100, TMDSDOCK28M36

Hi,

I am a beginner and I would like to know if the evaluation models presented for the above mentioned Micro Controller support EtherCAT, ModBus interfaces as well as Encoder interfaces such as Endat 2.2 and BiSS. This is to drive a stepper motor. Which one would be the best based on price as well as performance

The EVM's are as follows:

LAUNCHXL-F28377S

TMDSDOCK28379D

TMDXIDDK379D

 

  • 0
    TI__Guru 57255 points

    Hi Janani,

    I am looking into your question.   Will respond in the next day or so.


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    TI__Guru 57255 points

    Hi Janani,

    Based on your application, the F28379D is a good chip to look at. 

    However, we don't have a kit which will enable simultaneous evaluation/experimentation with the various things you have interest in.

    ===

    EtherCAT:

    The following TI Design should be helpful:
    http://www.ti.com/tool/tidm-delfino-ethercat

    We do have plans to turn the board into something that is sold on the TI eSTORE (either for interfacing to the cCARD or launchPAD), but it will still be some time before this happens.

    ===

    Modbus:

    TI has not created collateral for showing how to do Modbus on a C2000.  However, a potential reference that some customers have utilized is the following:
    https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/380010

    ===

    Encoder Interfaces/Position Manager (PM):

    The best hardware for demonstrating this is the IDDK kit today - this is expensive though.  There are software projects which show how to run EnDat or BiSS with the IDDK.

    Note that there are also a few projects which just show how to run the Position Manager libraries - without running a motor.  It may be possible to connect the external circuitry, shown in the IDDK, to the C2000 for prototyping.

    ===

    Stepper:

    We have a kit which shows how to run 2ph stepper motors on the C2000 and has evaluation software.  It is the DRV8412-C2-KIT.  It should serve as a good reference.

    The BOOST-DRV8711 + a C2000 launchPAD is another hardware option, but there is not software available.

    The IDDK has an IPM which can only drive three half-bridges.

    ===

    My recommendation would be to evaluate the F28379D with the TMDSDOCK28379D.  With this setup you should be able to learn the device and the software ecosystem.  You can then start experimenting with Position Manager a little, or as much as you'd like.  Once you've gained enough confidence, you can then design your own prototype board.

    Hopefully this helps!


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Expert 1600 points
    Please,

    "We do have plans to turn the board into something that is sold on the TI eSTORE (either for interfacing to the cCARD or launchPAD), but it will still be some time before this happens."
  • 0 in reply to Malcolm Windham
    TI__Guru 57255 points
    Hello: Your questions is not clear. Can you restate it?
  • 0 in reply to Brett Larimore
    Expert 1600 points

    EtherCAT Booster Pack for Delfino Launchpads since the C3100, although listed as compatible, requires a rewrite of the host driver due to a byte taking 16 bits on C2000, etc. I was planning to try to write CC3100 driver, but I anticipate that will take a bit, and an Ethernet booster would be cool, especially with the D version coming(using S now). There is a TI Design, but no product for the Ethernet Booster.

  • 0 in reply to Malcolm Windham
    TI__Guru 57255 points

    Hi,

    Please note that EtherCAT is not exactly Ethernet.  EtherCAT is an ethernet-based Industrial Fieldbus standard.  Note that the ET1100 in the TI Design is not able to rx/tx standard Ethernet frames (because there is no Ethernet MAC in that chip).

    I haven't tried or looked into it much, but I believe it would be possible to connect the following Ethernet boosterpack up to a C2000 launchPAD, if desired.  Of course software would need to be written and you would need to write this yourself.
    http://store.43oh.com/index.php?route=product/product&product_id=83

    Within the C2000 family, the F28M35 or F28M36 chips have Ethernet peripherals on chip.  Depending on your end-goal, these chips may also be interesting for you.  The TMDSDOCK28M36 is the evaluation kit for the F28M36 device family.


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Expert 1600 points
    Thanks. I will keep this in mind while I try to port c3100 booster to c2000 host.