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CSL_intcGlobalNmiEnable

David Newman3
Intellectual 920 points
Other Parts Discussed in Thread: SYSBIOS

When I add the CSL_intcGlobalNmiEnable call to my project, I get two errors

1.  "../mutex.c", line 47: warning #225-D: function declared implicitly

2.  error #10234-D: unresolved symbols remain

        symbol in file
        --------- ----------------
        CSL_intcGlobalNmiEnable ./mutex.obj

I know I should add something like the following to my cfg file to make it work:

        var cslSettings = xdc.useModule('ti.sysbios.csl.Settings');

        cslSettings.useCSLIntcLib = true;

However, I have not found what the secret code is.  Anybody have any ideas?

Thanks

  • 0
    TI__Mastermind 26780 points

    David,

    Which version of SYS/BIOS are you using, and on which device?  

    I don’t think there has ever been a ti.sysbios.csl.Settings module shipped with SYS/BIOS.  I’m wondering where that came from.

    Also the “function declared implicitly” warning typically indicates that the proper header file was not included in the C file that is calling the function.  Have you included the appropriate header file?

    The linker error indicates that the function object was not found in any libraries the linker is searching.  Is the CSL library in your linker search path?

    Scott

  • 0 in reply to ScottG
    Intellectual 920 points

    ok.  So, I copied code from this forum and it does not work....sorry.

    What I am trying to do is add a handler to catch NMI interrupts and I cannot seem to figure out how to do this with the documentation.  Can you help me by pointing to some examples somewhere or some documentation that describes all the steps?

    Thanks.

  • 0 in reply to David Newman3
    TI__Mastermind 26780 points

    Which version of SYS/BIOS and which device?

    I’m guessing this is for a C6000 DSP.  If so, there is some support for catching exceptions via the NMI [see the Exception module (open Bios_APIs.html in the “docs” subdirectory of the SYS/BIOS installation, and navigate to the description for the “ti.sysbios.family.c64p.Exception” module)].  But using NMI for routine “interrupts” is *not* supported - because an NMI can corrupt the program flow such that the program is not recoverable.  There is some description of the potential issues with NMIs in the CPU reference documentation, and depending upon the device, there may be some status bits that can be checked within the NMI service routine to see if the program is recoverable or not.

  • 0 in reply to ScottG
    Intellectual 920 points

    Yes, this is for a 6678.  SysBIOS is 6.34.4.22.  As far as using the NMI vs a regular interrupt, I am not sure I have a choice but I will ask the H/W guys about it.

    Thanks.