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Using a timer when running a C program as 'bare metal'

Former Member

Hi,

I'm trying to run a benchmark-like algoritm on the zedboard using the SDK (like the helloWorld program in the labs here on ZedBoard.org).

My poblem is that when i'm trying to get the time,
startTime = ftime(&tmb);
I get an error that ftime cannot be found.

Is there an commonly used way to get the time?

Thanks for answers :)

Anders Viken

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  • 0

    I found where the problem is, but I'm not sure how to fix it...

    In the XTmfCtr_Initialize() function, theres a for loop:

    for (TmrCtrNumber = 0; TmrCtrNumber < XTC_DEVICE_TIMER_COUNT;
    t     TmrCtrNumber++) {
    tt/*
    tt * Read the current register contents and check if the timer
    tt * counter is started and running, note that the register read
    tt * is not using the base address in the instance so this is not
    tt * destructive if the timer counter is already started
    tt */
    ttStatusReg = XTmrCtr_ReadReg(TmrCtrConfigPtr->BaseAddress,
    ttttt       TmrCtrNumber, XTC_TCSR_OFFSET);
    ttif (StatusReg & XTC_CSR_ENABLE_TMR_MASK) {
    tttprintf("********** Timer %d already started **********

    ", TmrCtrNumber);
    tttreturn XST_DEVICE_IS_STARTED;
    tt}
    t}

    The description is "Check each of the timer counters of the device, if any are already running, then the device should not be initialized. This allows the user to stop the device and reinitialize, but prevents a user from inadvertently initializing."

    Within this loop, I think there's an interrupt being fired, which is resetting something, and causing the program to go to the top of main(). I'm not sure how to overcome this, as it continues to happen during ever iteration. Could it be another timer that's firing the interrupt? I'll continue to look into this.

    (If the code above doesn't format nicely, I'll repost it)

  • 0 in reply to Former Member

    I tried installing the 14.5 xilinx package. then the program worked as intended :)

    I have no idea why...

    Anders Viken

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