ZYNQ XC7Z020平台PPI SCUTimer中断示例程序

static void TimerInterruptHandler(void * CallBackRef)
{
    static int sec = 0;
    printf("%d Seconds\n", sec++);
    XScuTimer * TimerInstPtr = (XScuTimer *)CallBackRef;
    XScuTimer_ClearInterruptStatus(TimerInstPtr);
}

int main(void)
{
    init_platform();
// Lookup the Timer configuration based on the unique device ID
    XScuTimer_Config * TimerConfigPtr;
    TimerConfigPtr = XScuTimer_LookupConfig(XPAR_XSCUTIMER_0_DEVICE_ID);
    // Initialize a specific timer instance/driver
    XScuTimer XScuTimerInst;
    XScuTimer_CfgInitialize(&XScuTimerInst, TimerConfigPtr, TimerConfigPtr->BaseAddr);
    // Run a self-test on the timer
    XScuTimer_SelfTest(&XScuTimerInst);

    //---------------------------------------------------------------------------
    // Timer configure
    //---------------------------------------------------------------------------
    // Write to the timer load register
    XScuTimer_LoadTimer(&XScuTimerInst, 0x13D92D3F);
    // Enable auto-reload mode
    XScuTimer_EnableAutoReload(&XScuTimerInst);
    // Start timer
    XScuTimer_Start(&XScuTimerInst);

    //---------------------------------------------------------------------------
    // Interrupt Controller initialization
    //---------------------------------------------------------------------------
    XScuGic XScuGicInst;
    XScuGic_Config *XScuGic_Config_ptr;

    XScuGic_Config_ptr = XScuGic_LookupConfig(XPAR_SCUGIC_SINGLE_DEVICE_ID);

    // CfgInitialize a specific interrupt controller instance/driver
    XScuGic_CfgInitialize(&XScuGicInst, XScuGic_Config_ptr, XScuGic_Config_ptr->CpuBaseAddress);

    //---------------------------------------------------------------------------
    // Interrupt system setup
    //---------------------------------------------------------------------------
    // Makes the connection between the Id of the exception source and the associated Handler
    Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, &XScuGicInst);
    // Enable Exceptions
    Xil_ExceptionEnableMask(XIL_EXCEPTION_IRQ);

    //---------------------------------------------------------------------------
    // Register Interrupt Handler
    //---------------------------------------------------------------------------
    // Makes the connection between the Int_Id of the interrupt source and the associated handler
    XScuGic_Connect(&XScuGicInst, XPAR_SCUTIMER_INTR, (Xil_ExceptionHandler)TimerInterruptHandler, (void *)&XScuTimerInst);

    //---------------------------------------------------------------------------
    // Enable Timer interrupt in the controller
    //---------------------------------------------------------------------------
    // Enable the Timer interrupt
    XScuTimer_EnableInterrupt(&XScuTimerInst);

    XScuGic_Enable(&XScuGicInst, XPAR_SCUTIMER_INTR);

    printf("GIC SCUTimer ...\n");
    while(1);

    cleanup_platform();
    return 0;
}