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TMS320F28379D: CLA and CPU data sharing

ENES TASTEKIN
Prodigy 120 points
Part Number: TMS320F28379D

hi, I want to run the controller of my system that I designed in the cla unit. now some of the variables in this controller need to keep the previous value, so I have to do the variable definition for cla, or is it okay if I define it in a common header file?

my second question is now I want to use some variables from the operations I do on the cla unit on the cpu unit, should I necessarily use message rams to use this, or are there common used variables?
is it possible to use the variables defined in this common header file together?

  • 0
    TI__Mastermind 32435 points
    ENES TASTEKIN said:

    hi, I want to run the controller of my system that I designed in the cla unit. now some of the variables in this controller need to keep the previous value, so I have to do the variable definition for cla, or is it okay if I define it in a common header file?

    Do you mean header file common to C28 and C29? Nevertheless, I believe the variables has to be defined in a .c or .cla file to avoid duplicate definition. You can add the extern declaration in a header file. Variables defined c file can be used in cla file as well. Variables defined in cla file can only be used in cla file.

  • 0 in reply to Veena Kamath
    Prodigy 120 points

    now I'm doing an offset calculation on the C28x processor, I want to use this value on both the c28x processor and the cla side, but it just didn't happen. i'm studying the code in the pfc3phvienna project belonging to texas, it looks like he did it there, but I couldn't do it somehow, when I define the variable as volatile, does it not appear in the cla unit somehow?

  • 0 in reply to ENES TASTEKIN
    TI__Mastermind 32435 points

    The data shared between C28 and CLA should be placed in either a LSRAM which is configured as CLA Data memory or CPU-CLA MSGRAM.

    Please make sure the variable is allocated to either one of these memories

    Regards,

    Veena