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TMS570LS1224: issue of example of Hercules_Motorware

Susan Yang
Genius 9955 points

Part Number: TMS570LS1224
Other Parts Discussed in Thread: MOTORWARE, TMS570LS1227, TMS570LS0714

Dear team,

I download the Hercules_Motorware_Dec2012.zip at the wiki page http://processors.wiki.ti.com/index.php/TMS570LS12x_CNCD 

I have some questions about the motorware,please help

The example is TMS570LS1227_sensored_smo_new. 

  1 Is the motor current AD sampling periodic or hardware triggered? 

what is the period? How long does the DRV_run function need to be executed under fixed/floating operations?


2 Specific to different motors, in addition to the ENC_init, SMO_POS_init parameter settings, what should be configured?


3 Could the motorware be used on TMS570LS0714? Do we have any other tutorial?

BR,
Susan
  • 0
    TI__Mastermind 49120 points

    Hi Susan,

    See my comments for your questions below:

    1 Is the motor current AD sampling periodic or hardware triggered? 

    >> The ADC conversions are hardware triggered, synchronized to the PWM outputs.

    what is the period? How long does the DRV_run function need to be executed under fixed/floating operations?

    >> The PWM frequency is 20KHz, so the period is 50us. The total number of CPU cycles for each component of the algorithm is specified in a document under the C:\ti\Hercules\MotorWare\v1.0.3.03\sw\solutions\foc_encoder_speed\boards\drv8301kit_revD\hercules\tms570ls1227\projects\ccs5\project01\docs folder, assuming that you installed Hercules Motorware under the C:\ti\Hercules folder.


    2 Specific to different motors, in addition to the ENC_init, SMO_POS_init parameter settings, what should be configured?
    >> There is also a GUI for this Motorware program that allows you to configure the motor parameters. These can also be configured in the software directly.


    3 Could the motorware be used on TMS570LS0714? Do we have any other tutorial?
    >> Yes, the linker command file needs to be updated to account for the different flash and RAM memory sizes, but the program as such is entirely portable from TMS570LS1227 to TMS570LS0714.

    Regards, Sunil