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Original question:

TMS320F28386D: sdl_ex_ram_ecc_parity_test

TMS320F28386D: Acces to GS RAMs

W Z
Expert 2360 points
Part Number: TMS320F28386D


One question: GS RAMs are shared in TMS320F28386D, is there method to check which core own the access?

I suppose that have driverlib function.

  • 0
    Mastermind 9470 points

    CPU1 is the master unless you have set bits (e.g. MSEL_GS10) in register GSxMSEL. This is usually done by calling MemCfg_setGSRAMMasterSel().

    There is no driverLib function to read the GSxMSEL register so you will have to write your own.

  • 0 in reply to Kier
    Expert 2360 points

    I searched my project, did not find that RAMGS9 assigned to CPU2 by MemCfg_setGSRAMMasterSel(). But CPU2 still can use the RAMGS9.

  • 0 in reply to W Z
    TI__Mastermind 30185 points

    Hello,

    Can you clarify what you mean by the CPU2 can still use the RAMGS9? Also, can you check the GSxMSEL register to confirm what CPU is configured to be owning it? The Global Shared RAM (GSx RAM) section in the C28x System Control and Interrupts chapter should explain more detail on this and any arbitration that happens.

    Best regards,

    Omer Amir