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TMS320F28379D: Unplugged interrupt flagged: intr# 19

Alex Lifshitz
Intellectual 560 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: SYSBIOS

Dear support,

I'm working on LAUNCHXL-F28379D evaluation board.

If my code executes the DELAY_US macro, I get:

ti.sysbios.family.c28.Hwi: line 1022: E_unpluggedInterrupt: Unplugged interrupt flagged: intr# 19
xdc.runtime.Error.raise: terminating execution

#define DELAY_US(A) F28x_usDelay(((((long double) A * 1000.0L) / (long double)CPU_RATE) - 9.0L) / 5.0L)

#define CPU_RATE 10.00L // for a 100MHz CPU clock speed (SYSCLKOUT)

Here is the code of F28x_usDelay() from F2837xD_usDelay.asm:

       .def _F28x_usDelay

       .cdecls LIST ;;Used to populate __TI_COMPILER_VERSION__ macro
       %{
       %}

       .if __TI_COMPILER_VERSION__
       .if __TI_COMPILER_VERSION__ >= 15009000
       .sect ".TI.ramfunc"      ;;Used with compiler v15.9.0 and newer
       .else
       .sect "ramfuncs"         ;;Used with compilers older than v15.9.0
       .endif
       .endif

        .global  __F28x_usDelay
_F28x_usDelay:
        SUB    ACC,#1
        BF     _F28x_usDelay,GEQ    ;; Loop if ACC >= 0
        LRETR

Please advise.

Alex.

  • 0 in reply to Alex Lifshitz
    Intellectual 560 points

    The issue was solved after adding "_FLASH" to the predefined symbols.

    Now the below code is active and there is no problem running the F28x_usDelay(x)

    void InitSysCtrl(void)
{
    //
    // Disable the watchdog
    //
    DisableDog();

#ifdef _FLASH
    //
    // Copy time critical code and Flash setup code to RAM. This includes the
    // following functions: InitFlash()
    //
    // The  RamfuncsLoadStart, RamfuncsLoadSize, and RamfuncsRunStart
    // symbols are created by the linker. Refer to the device .cmd file.
    //
    memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

    //
    // Call Flash Initialization to setup flash waitstates. This function must
    // reside in RAM.
    //
    InitFlash();
#endif