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TMS320F28374D: Read access to DevCfgRegs

Part Number: TMS320F28374D


Tool/software:

Hi all!

On CPU 1 I set DevCfgRegs.CPUSEL5.bit.SCI_A to '0' (Owner is CPU 1) and DevCfgRegs.CPUSEL5.bit.SCI_B to '1' (Owner is CPU 2). Then I try to read register DevCfgRegs.CPUSEL5 by CPU 2 all bits are '0'.

How can I get the correct content of DevCfgRegs.CPUSEL5 set by CPU1 on CPU 2 also?

Best regards
Rudi

  • HI Rudi,

    Here is the TRM snapshot of memory map table for these registers. There is a note (highlighted in yellow) that says that these registers structures are only accessible from CPU1. That is why are you getting value 0x0 from CPU2

    If you need to access this information from CPU2 then CPU2 need to query it from CPU1 via IPC and use the information.

    Regards,

    Vivek Singh