******************************

* User Peripheral Self Test

******************************


User logic slave module test...

   - slave register write/read passed

   - slave register write/read passed

   - slave register write/read passed

   - slave register write/read passed

Soft reset test...

   - write 0x0000000A to software reset register

   - soft reset passed


Wait for Interrupts....

void InterruptHandler_Timer(void *CallbackRef, int TmrCtrNumber)

XIntc_Connect(int_controller, XPAR_INTC_0_TMRCTR_0_VEC_ID, XTmrCtr_InterruptHandler, (void *)TimerCounter);

XIntc_Start(int_controller, XIN_REAL_MODE);

XIntc_Enable(int_controller, XPAR_INTC_0_TMRCTR_0_VEC_ID);

//на момент написания программы это пустая функция, вызовим
    //на случай если в будующем эта функция станет наполнена
    Xil_ExceptionInit();

    //добавим указатель на функцию обработки исключения "прерывание"
    //это уже настроено через libgen, добавим явное определение на всякий случай
    Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
                    (Xil_ExceptionHandler)XIntc_InterruptHandler,
                    int_controller);

    //Запустим исключение и включим прерывания (глобально)
       Xil_ExceptionEnable();

XTmrCtr_SetHandler(TimerCounter,(XTmrCtr_Handler)InterruptHandler_Timer,(void *)TimerCounter);

void TimerCounterHandler(void *CallBackRef, u8 TmrCtrNumber)
{
    XTmrCtr *InstancePtr = (XTmrCtr *)CallBackRef;

    print("TimerCounterHandler\n");

/* $Id: xintc_low_level_example.c,v 1.1.2.1 2011/05/24 07:09:38 vidhum Exp $ */
/******************************************************************************
*
* © Copyright 2002-2009 Xilinx, Inc. All rights reserved.
*
* This file contains confidential and proprietary information of Xilinx, Inc.
* and is protected under U.S. and international copyright and other
* intellectual property laws.
*
* DISCLAIMER
* This disclaimer is not a license and does not grant any rights to the
* materials distributed herewith. Except as otherwise provided in a valid
* license issued to you by Xilinx, and to the maximum extent permitted by
* applicable law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND WITH ALL
* FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS,
* IMPLIED, OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
* MERCHANTABILITY, NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE;
* and (2) Xilinx shall not be liable (whether in contract or tort, including
* negligence, or under any other theory of liability) for any loss or damage
* of any kind or nature related to, arising under or in connection with these
* materials, including for any direct, or any indirect, special, incidental,
* or consequential loss or damage (including loss of data, profits, goodwill,
* or any type of loss or damage suffered as a result of any action brought by
* a third party) even if such damage or loss was reasonably foreseeable or
* Xilinx had been advised of the possibility of the same.
*
* CRITICAL APPLICATIONS
* Xilinx products are not designed or intended to be fail-safe, or for use in
* any application requiring fail-safe performance, such as life-support or
* safety devices or systems, Class III medical devices, nuclear facilities,
* applications related to the deployment of airbags, or any other applications
* that could lead to death, personal injury, or severe property or
* environmental damage (individually and collectively, "Critical
* Applications"). Customer assumes the sole risk and liability of any use of
* Xilinx products in Critical Applications, subject only to applicable laws
* and regulations governing limitations on product liability.
*
* THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS PART OF THIS FILE
* AT ALL TIMES.
*
******************************************************************************/
/******************************************************************************/
/**
*
* @file xintc_low_level_example.c
*
* This file contains a design example using the low level-0 driver, interface
* of the Interrupt Controller driver.
*
* This example shows the use of the Interrupt Controller both with a PowerPC
* and a MicroBlaze processor.
*
* @note
*
* <pre>
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- ---------------------------------------------------------
* 1.00c rpm 12/04/03 First release
* 1.00c sv 06/29/05 Minor changes to comply to Doxygen and coding guidelines
* 2.00a ktn 10/20/09 Updated to use HAL Processor APIs and _m is removed from
* all the macro names/definitions. Minor changes done as per
* coding guidelines.
* </pre>
******************************************************************************/

/***************************** Include Files *********************************/

#include "xparameters.h"
#include "xstatus.h"
#include "xintc_l.h"
#include "xil_exception.h"

/************************** Constant Definitions *****************************/

/*
* The following constants map to the XPAR parameters created in the
* xparameters.h file. They are defined here such that a user can easily
* change all the needed parameters in one place.
*/
#define INTC_BASEADDR XPAR_INTC_0_BASEADDR
#define INTC_DEVICE_ID XPAR_INTC_0_DEVICE_ID
#define INTC_DEVICE_INTR_ID XPAR_INTC_0_UARTLITE_0_VEC_ID
#define INTC_DEVICE_INT_MASK XPAR_RS232_UART_1_INTERRUPT_MASK


/**************************** Type Definitions *******************************/


/***************** Macros (Inline Functions) Definitions *********************/


/************************** Function Prototypes ******************************/

int IntcLowLevelExample(u32 IntcBaseAddress);

void SetupInterruptSystem();

void DeviceDriverHandler(void *CallbackRef);


/************************** Variable Definitions *****************************/

/*
* Create a shared variable to be used by the main thread of processing and
* the interrupt processing
*/
volatile static int InterruptProcessed = FALSE;

/*****************************************************************************/
/**
*
* This is the main function for the Interrupt Controller Low Level example.
*
* @param None.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int main(void)
{
int Status;

/*
* Run the low level example of Interrupt Controller, specify the Base
* Address generated in xparameters.h.
*/
Status = IntcLowLevelExample(INTC_BASEADDR);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}

return XST_SUCCESS;

}

/*****************************************************************************/
/**
*
* This function is an example of how to use the interrupt controller driver
* component (XIntc) and the hardware device. This function is designed to
* work without any hardware devices to cause interrupts. It may not return
* if the interrupt controller is not properly connected to the processor in
* either software or hardware.
*
* This function relies on the fact that the interrupt controller hardware
* has come out of the reset state such that it will allow interrupts to be
* simulated by the software.
*
* @param IntcBaseAddress is Base Address of the the Interrupt Controller
* Device.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int IntcLowLevelExample(u32 IntcBaseAddress)
{

/*
* Connect a device driver handler that will be called when an interrupt
* for the device occurs, the device driver handler performs the
* specific interrupt processing for the device.
*/
XIntc_RegisterHandler(IntcBaseAddress, INTC_DEVICE_INTR_ID,
(XInterruptHandler)DeviceDriverHandler,
(void *)0);

/*
* Enable interrupts for all devices that cause interrupts, and enable
* the INTC master enable bit.
*/
XIntc_EnableIntr(IntcBaseAddress, INTC_DEVICE_INT_MASK);


/*
* Set the master enable bit. Note that we do not enable hardware
* interrupts yet since we want to simulate an interrupt from software
* down below.
*/
XIntc_Out32(IntcBaseAddress + XIN_MER_OFFSET, XIN_INT_MASTER_ENABLE_MASK);

/*
* This step is processor specific, connect the handler for the
* interrupt controller to the interrupt source for the processor.
*/
SetupInterruptSystem();

/*
* Cause (simulate) an interrupt so the handler will be called. This is
* done by writing a 1 to the interrupt status bit for the device
* interrupt.
*/
XIntc_Out32(IntcBaseAddress + XIN_ISR_OFFSET, INTC_DEVICE_INT_MASK);

/*
* Wait for the interrupt to be processed, if the interrupt does not
* occur this loop will wait forever.
*/
while (1)
{
/*
* If the interrupt occurred which is indicated by the global
* variable which is set in the device driver handler, then
* stop waiting.
*/
if (InterruptProcessed) {
break;
}
}


return XST_SUCCESS;

}
/*****************************************************************************/
/**
*
* This function connects the interrupt handler of the interrupt controller to
* the processor. This function is seperate to allow it to be customized for
* each application. Each processor or RTOS may require unique processing to
* connect the interrupt handler.
*
* @param None.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void SetupInterruptSystem()
{
/*
* Initialize the exception table.
*/
Xil_ExceptionInit();

/*
* Register the interrupt controller handler with the exception table.
*/
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)XIntc_DeviceInterruptHandler,
INTC_DEVICE_ID);

/*
* Enable exceptions.
*/
Xil_ExceptionEnable();

}



/*****************************************************************************/
/**
*
* This function is designed to look like an interrupt handler in a device
* driver. This is typically a 2nd level handler that is called from the
* interrupt controller interrupt handler. This handler would typically
* perform device specific processing such as reading and writing the registers
* of the device to clear the interrupt condition and pass any data to an
* application using the device driver.
*
* @param CallbackRef is passed back to the device driver's interrupt
* handler by the XIntc driver. It was given to the XIntc driver
* in the XIntc_Connect() function call. It is typically a pointer
* to the device driver instance variable if using the Xilinx Level
* 1 device drivers. In this example, we do not care about the
* callback reference, so we passed it a 0 when connecting the
* handler to the XIntc driver and we make no use of it here.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DeviceDriverHandler(void *CallbackRef)
{
/*
* Indicate the interrupt has been processed using a shared variable.
*/
InterruptProcessed = TRUE;

}