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TI Home » TI E2E Community » Support Forums » Microcontrollers » C2000™ Microcontrollers » C2000 32-bit Microcontrollers Forum » read INTM from C
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    read INTM from C

    This question is answered
    Max Sonnaillon
    Posted by Max Sonnaillon
    on Apr 04 2012 13:29 PM
    Intellectual520 points

    Hello,

    Is there any way to read the global interrupt mask (INTM) bit of a Piccolo device from C code?

    I need to temporally disable all the interrupts (DINT) in a function and then restore the value that INTM had before (enable them (EINT) ONLY if they were enabled).

    Thanks,

    Max

    Piccolo INTM interrupts C Programming Language
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    • Daniel Chang
      Posted by Daniel Chang
      on Apr 04 2012 13:48 PM
      Expert4120 points

      Why do you need to check INTM?  Why can't you just use DINT followed by an EINT?

      Are you saying that they might already be disabled and you don't want to always re-enable them?

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    • Max Sonnaillon
      Posted by Max Sonnaillon
      on Apr 04 2012 14:22 PM
      Intellectual520 points

      Daniel,

      Yes, if before it was disabled I don't want to enable it.

      Thanks,

      Max

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    • Daniel Chang
      Posted by Daniel Chang
      on Apr 04 2012 14:54 PM
      Verified Answer
      Verified by Max Sonnaillon
      Expert4120 points

      Max,

      Take a look at SPRU514D, specifically Table 7-6 C/C++ Compiler Intrinsics.

      The __disable_interrupts(); and __enable_interrupts( ); functions might be what you are looking for.

      http://www.ti.com/lit/pdf/spru514

      Regards,
      Daniel

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