2 interruptions (timer + button)

I created a new project and I set to get two interruptions, one for timer and for the buttons, it worked without error. When I launched the SDK, both separately code works correctly but when I merged the two, no work me .. I checked everywhere but I do not understand why, if you can help me please. Here is the SDK code: Thank you.

/*
* Copyright (c) 2009 Xilinx, Inc. All rights reserved.
*
* Xilinx, Inc.
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
* STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
* IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
* FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
* ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
* FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/

/*
* helloworld.c: simple test application
*/
#include <stdio.h>
//#include "platform.h"
#include "xil_types.h"
#include "xgpio.h"
#include "xtmrctr.h"
#include "xparameters.h"
#include "xgpiops.h"
#include "xil_io.h"
#include "xil_exception.h"
#include "xscugic.h"

#define LED_CHANNEL 2
#define BUTTON_CHANNEL 1
#define GPIO_EXAMPLE_DEVICE_ID  XPAR_AXI_GPIO_0_DEVICE_ID
#define INTC_DEVICE_IDtXPAR_PS7_SCUGIC_0_DEVICE_ID
#define INTC_GPIO_INTERRUPT_IDtXPAR_FABRIC_GPIO_0_VEC_ID
#define INTC XScuGic
#define INTC_HANDLERtXScuGic_InterruptHandler
#define BUTTON_INTERRUPT XGPIO_IR_CH1_MASK


static XGpioPs psGpioInstancePtr;
extern XGpioPs_Config XGpioPs_ConfigTable[XPAR_XGPIOPS_NUM_INSTANCES];
static int iPinNumber = 7; /*Led LD9 is connected to MIO pin 7*/
XScuGic InterruptController; /* Instance of the Interrupt Controller */
static XScuGic_Config *GicConfig;/* The configuration parameters of the
            controller */
static int InterruptFlag;
extern char inbyte(void);
XGpio Gpio;
static INTC Intc;
static u8 Var = 0XFF;
XTmrCtr TimerInstancePtr;

void Timer_InterruptHandler(void *data, u8 TmrCtrNumber)
{
  print("r
");
  print("r
");
  print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@r
");
  print(" Inside Timer ISR
r ");
  XTmrCtr_Stop(data,TmrCtrNumber);
  // PS GPIO Writing
  print("LED 'LD9' Turned ON r
");
  XGpioPs_WritePin(&psGpioInstancePtr,iPinNumber,1);
  XTmrCtr_Reset(data,TmrCtrNumber);
  print(" Timer ISR Exit

r");
  print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@r
");
  print("r
");
  print("r
");
  InterruptFlag = 1;
}

int SetUpInterruptSystem(XScuGic *XScuGicInstancePtr)
{
  /*
   * Connect the interrupt controller interrupt handler to the hardware
   * interrupt handling logic in the ARM processor.
   */
  Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
      (Xil_ExceptionHandler) XScuGic_InterruptHandler,
      XScuGicInstancePtr);
  /*
   * Enable interrupts in the ARM
   */
  Xil_ExceptionEnable();
  return XST_SUCCESS;
}

int ScuGicInterrupt_Init(u16 DeviceId,XTmrCtr *TimerInstancePtr)
{
  int Status;
  /*
   * Initialize the interrupt controller driver so that it is ready to
   * use.
   */
  GicConfig = XScuGic_LookupConfig(DeviceId);
  if (NULL == GicConfig) {
    return XST_FAILURE;
  }
  Status = XScuGic_CfgInitialize(&InterruptController, GicConfig,
      GicConfig->CpuBaseAddress);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * Setup the Interrupt System
   */
  Status = SetUpInterruptSystem(&InterruptController);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * 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
   */
  Status = XScuGic_Connect(&InterruptController,
      XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR,
      (Xil_ExceptionHandler)XTmrCtr_InterruptHandler,
      (void *)TimerInstancePtr);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * Enable the interrupt for the device and then cause (simulate) an
   * interrupt so the handlers will be called
   */
  XScuGic_Enable(&InterruptController, XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR);
  return XST_SUCCESS;
}

int main()
{
  //static XGpio Gpio;
  XGpioPs_Config*GpioConfigPtr;
  XTmrCtr TimerInstancePtr;
  int xStatus;
  u32 Readstatus=0,OldReadStatus=0;
  //u32 EffectiveAdress = 0xE000A000;
  int iPinNumberEMIO = 54;
  u32 uPinDirectionEMIO = 0x0;
  // Input Pin
  // Pin direction
  u32 uPinDirection = 0x1;
  int exit_flag,choice,internal_choice;
  //init_platform();
  /* data = *(u32 *)(0x42800004);
     print("OK
");
     data = *(u32 *)(0x41200004);
     print("OK-1
");
   */
  print("##### Application Starts #####
r");
  print("r
");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-1 :AXI GPIO Initialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus = XGpio_Initialize(&Gpio,XPAR_AXI_GPIO_0_DEVICE_ID);
  if(XST_SUCCESS != xStatus)
    print("GPIO INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-2 :AXI GPIO Set the Direction
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpio_SetDataDirection(&Gpio, 1,0X1F);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-3 :AXI Timer Initialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus = XTmrCtr_Initialize(&TimerInstancePtr,XPAR_AXI_TIMER_0_DEVICE_ID);
  if(XST_SUCCESS != xStatus)
    print("TIMER INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-4 :Set Timer Handler
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetHandler(&TimerInstancePtr,
      Timer_InterruptHandler,
      &TimerInstancePtr);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-5 :Setting timer Reset Value
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetResetValue(&TimerInstancePtr,
      0, //Change with generic value
      0xffffffff);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-6 :Setting timer Option (Interrupt Mode And Auto Reload )
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetOptions(&TimerInstancePtr,
      XPAR_AXI_TIMER_0_DEVICE_ID,
      (XTC_INT_MODE_OPTION | XTC_AUTO_RELOAD_OPTION ));
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-7 :PS GPIO Intialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  GpioConfigPtr = XGpioPs_LookupConfig(XPAR_PS7_GPIO_0_DEVICE_ID);
  if(GpioConfigPtr == NULL)
    return XST_FAILURE;
  xStatus = XGpioPs_CfgInitialize(&psGpioInstancePtr,
      GpioConfigPtr,
      GpioConfigPtr->BaseAddr);
  if(XST_SUCCESS != xStatus)
    print(" PS GPIO INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-8 :PS GPIO pin setting to Output
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpioPs_SetDirectionPin(&psGpioInstancePtr, iPinNumber,uPinDirection);
  XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumber,1);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-9 :EMIO PIN Setting to Input port
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpioPs_SetDirectionPin(&psGpioInstancePtr,
      iPinNumberEMIO,uPinDirectionEMIO);
  XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumberEMIO,0);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-10 : SCUGIC interrupt controller Initialization
  //Registration of the Timer ISR
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus=
      ScuGicInterrupt_Init(XPAR_PS7_SCUGIC_0_DEVICE_ID,&TimerInstancePtr);
  if(XST_SUCCESS != xStatus)
    print(" :( SCUGIC INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-11 :User selection procedure to select and execute tests
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
int Status;
  Status = SetupInterruptSystem();
  t  if (Status != XST_SUCCESS) {
  t    print("Interrupt Setup FAILED
r");

  ttreturn XST_FAILURE;
  t  }
  while(1)
{/*
        Readstatus = XGpio_DiscreteRead(&Gpio, 1);
        if(1== Readstatus)
        {
            XTmrCtr_Start(&TimerInstancePtr,0);

            print(" :( SCUGIC INIT FAILED
r");
        }
        */

}

          //while(InterruptFlag != 1)

         // InterruptFlag = 0;




  return 0;
}



void GpioIsr(void *InstancePtr)
{
tu32 Buttons;  // Paste near top of function, with variables
tu32 New_DutyCycle; // Paste near top of function, with variables

tXGpio *GpioPtr = (XGpio *)InstancePtr;
t/*
t * Disable the interrupt
t */
tXGpio_InterruptDisable(GpioPtr, BUTTON_INTERRUPT);
t/*
t * There should not be any other interrupts occuring other
t * than the the button changes
t */
tif ((XGpio_InterruptGetStatus(GpioPtr) & BUTTON_INTERRUPT)!= BUTTON_INTERRUPT) {
ttreturn;
t}
t/*
t * Read state of push buttons and determine which ones changed
t * states from the previous interrupt. Save a copy of the buttons
t * for the next interrupt
t */
tButtons = XGpio_DiscreteRead(&Gpio, BUTTON_CHANNEL);
tprintf("Brightness updated to: %d
r", Buttons);

tif (Buttons == 1) {

ttxil_printf("Button 1r
");
       XTmrCtr_Start(&TimerInstancePtr,0);

ttVar = 1;t}
tif (Buttons == 2) {
ttxil_printf("Button 2r
");
ttVar = 2;t}
tif (Buttons == 4) {
ttxil_printf("Button 3r
");
ttVar = 4;t}
tif (Buttons == 8) {
ttxil_printf("Button 4r
");
ttVar = 8;t}
tif (Buttons == 16) {
ttxil_printf("Button 5r
");
ttVar = 16;t}

t//New_DutyCycle = brightness/110000;

t//XGpio_DiscreteWrite(&Gpio, LED_CHANNEL, V);
t//xil_printf("Brightness updated to: %d
r", New_DutyCycle);
t/* Clear the interrupt such that it is no longer pending in the GPIO */

t (void)XGpio_InterruptClear(GpioPtr, BUTTON_INTERRUPT);

t /*
t  * Enable the interrupt
t  */
t XGpio_InterruptEnable(GpioPtr, BUTTON_INTERRUPT);
t print("Interrupt Processed r
");

}


/****************************************************************************/
/**
* This function sets up the interrupt system for the example.  The processing
* contained in this funtion assumes the hardware system was built with
* and interrupt controller.
*
* @paramtNone.
*
* @returntA status indicating XST_SUCCESS or a value that is contained in
*ttxstatus.h.
*
* @notettNone.
*
*****************************************************************************/
int SetupInterruptSystem()
{
tint Result;
tINTC *IntcInstancePtr = &Intc;

#ifdef XPAR_INTC_0_DEVICE_ID
t/*
t * Initialize the interrupt controller driver so that it's ready to use.
t * specify the device ID that was generated in xparameters.h
t */
tResult = XIntc_Initialize(IntcInstancePtr, INTC_DEVICE_ID);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

t/* Hook up interrupt service routine */
tXIntc_Connect(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
tt      (Xil_ExceptionHandler)GpioIsr, &Gpio);

t/* Enable the interrupt vector at the interrupt controller */

tXIntc_Enable(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID);

t/*
t * Start the interrupt controller such that interrupts are recognized
t * and handled by the processor
t */
tResult = XIntc_Start(IntcInstancePtr, XIN_REAL_MODE);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

#else
tXScuGic_Config *IntcConfig;

t/*
t * Initialize the interrupt controller driver so that it is ready to
t * use.
t */
tIntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
tif (NULL == IntcConfig) {
ttreturn XST_FAILURE;
t}

tResult = XScuGic_CfgInitialize(IntcInstancePtr, IntcConfig,
tttttIntcConfig->CpuBaseAddress);
tif (Result != XST_SUCCESS) {
ttreturn XST_FAILURE;
t}

tXScuGic_SetPriorityTriggerType(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
ttttt0xA0, 0x3);

t/*
t * Connect the interrupt handler that will be called when an
t * interrupt occurs for the device.
t */
tResult = XScuGic_Connect(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
tttt (Xil_ExceptionHandler)GpioIsr, &Gpio);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

t/*
t * Enable the interrupt for the GPIO device.
t */
tXScuGic_Enable(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID);
#endif

t/*
t * Enable the GPIO channel interrupts so that push button can be
t * detected and enable interrupts for the GPIO device
t */
tXGpio_InterruptEnable(&Gpio, BUTTON_INTERRUPT);
tXGpio_InterruptGlobalEnable(&Gpio);

t/*
t * Initialize the exception table and register the interrupt
t * controller handler with the exception table
t */
tXil_ExceptionInit();

tXil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
ttt (Xil_ExceptionHandler)INTC_HANDLER, IntcInstancePtr);

t/* Enable non-critical exceptions */
tXil_ExceptionEnable();

treturn XST_SUCCESS;
}

I created a new project and I set to get two interruptions, one for timer and for the buttons, it worked without error. When I launched the SDK, both separately code works correctly but when I merged the two, no work me .. I checked everywhere but I do not understand why, if you can help me please. Here is the SDK code: Thank you.

/*
* Copyright (c) 2009 Xilinx, Inc. All rights reserved.
*
* Xilinx, Inc.
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
* STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
* IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
* FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
* ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
* FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/

/*
* helloworld.c: simple test application
*/
#include <stdio.h>
//#include "platform.h"
#include "xil_types.h"
#include "xgpio.h"
#include "xtmrctr.h"
#include "xparameters.h"
#include "xgpiops.h"
#include "xil_io.h"
#include "xil_exception.h"
#include "xscugic.h"

#define LED_CHANNEL 2
#define BUTTON_CHANNEL 1
#define GPIO_EXAMPLE_DEVICE_ID  XPAR_AXI_GPIO_0_DEVICE_ID
#define INTC_DEVICE_IDtXPAR_PS7_SCUGIC_0_DEVICE_ID
#define INTC_GPIO_INTERRUPT_IDtXPAR_FABRIC_GPIO_0_VEC_ID
#define INTC XScuGic
#define INTC_HANDLERtXScuGic_InterruptHandler
#define BUTTON_INTERRUPT XGPIO_IR_CH1_MASK


static XGpioPs psGpioInstancePtr;
extern XGpioPs_Config XGpioPs_ConfigTable[XPAR_XGPIOPS_NUM_INSTANCES];
static int iPinNumber = 7; /*Led LD9 is connected to MIO pin 7*/
XScuGic InterruptController; /* Instance of the Interrupt Controller */
static XScuGic_Config *GicConfig;/* The configuration parameters of the
            controller */
static int InterruptFlag;
extern char inbyte(void);
XGpio Gpio;
static INTC Intc;
static u8 Var = 0XFF;
XTmrCtr TimerInstancePtr;

void Timer_InterruptHandler(void *data, u8 TmrCtrNumber)
{
  print("r
");
  print("r
");
  print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@r
");
  print(" Inside Timer ISR
r ");
  XTmrCtr_Stop(data,TmrCtrNumber);
  // PS GPIO Writing
  print("LED 'LD9' Turned ON r
");
  XGpioPs_WritePin(&psGpioInstancePtr,iPinNumber,1);
  XTmrCtr_Reset(data,TmrCtrNumber);
  print(" Timer ISR Exit

r");
  print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@r
");
  print("r
");
  print("r
");
  InterruptFlag = 1;
}

int SetUpInterruptSystem(XScuGic *XScuGicInstancePtr)
{
  /*
   * Connect the interrupt controller interrupt handler to the hardware
   * interrupt handling logic in the ARM processor.
   */
  Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
      (Xil_ExceptionHandler) XScuGic_InterruptHandler,
      XScuGicInstancePtr);
  /*
   * Enable interrupts in the ARM
   */
  Xil_ExceptionEnable();
  return XST_SUCCESS;
}

int ScuGicInterrupt_Init(u16 DeviceId,XTmrCtr *TimerInstancePtr)
{
  int Status;
  /*
   * Initialize the interrupt controller driver so that it is ready to
   * use.
   */
  GicConfig = XScuGic_LookupConfig(DeviceId);
  if (NULL == GicConfig) {
    return XST_FAILURE;
  }
  Status = XScuGic_CfgInitialize(&InterruptController, GicConfig,
      GicConfig->CpuBaseAddress);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * Setup the Interrupt System
   */
  Status = SetUpInterruptSystem(&InterruptController);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * 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
   */
  Status = XScuGic_Connect(&InterruptController,
      XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR,
      (Xil_ExceptionHandler)XTmrCtr_InterruptHandler,
      (void *)TimerInstancePtr);
  if (Status != XST_SUCCESS) {
    return XST_FAILURE;
  }
  /*
   * Enable the interrupt for the device and then cause (simulate) an
   * interrupt so the handlers will be called
   */
  XScuGic_Enable(&InterruptController, XPAR_FABRIC_AXI_TIMER_0_INTERRUPT_INTR);
  return XST_SUCCESS;
}

int main()
{
  //static XGpio Gpio;
  XGpioPs_Config*GpioConfigPtr;
  XTmrCtr TimerInstancePtr;
  int xStatus;
  u32 Readstatus=0,OldReadStatus=0;
  //u32 EffectiveAdress = 0xE000A000;
  int iPinNumberEMIO = 54;
  u32 uPinDirectionEMIO = 0x0;
  // Input Pin
  // Pin direction
  u32 uPinDirection = 0x1;
  int exit_flag,choice,internal_choice;
  //init_platform();
  /* data = *(u32 *)(0x42800004);
     print("OK
");
     data = *(u32 *)(0x41200004);
     print("OK-1
");
   */
  print("##### Application Starts #####
r");
  print("r
");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-1 :AXI GPIO Initialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus = XGpio_Initialize(&Gpio,XPAR_AXI_GPIO_0_DEVICE_ID);
  if(XST_SUCCESS != xStatus)
    print("GPIO INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-2 :AXI GPIO Set the Direction
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpio_SetDataDirection(&Gpio, 1,0X1F);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-3 :AXI Timer Initialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus = XTmrCtr_Initialize(&TimerInstancePtr,XPAR_AXI_TIMER_0_DEVICE_ID);
  if(XST_SUCCESS != xStatus)
    print("TIMER INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-4 :Set Timer Handler
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetHandler(&TimerInstancePtr,
      Timer_InterruptHandler,
      &TimerInstancePtr);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-5 :Setting timer Reset Value
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetResetValue(&TimerInstancePtr,
      0, //Change with generic value
      0xffffffff);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-6 :Setting timer Option (Interrupt Mode And Auto Reload )
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XTmrCtr_SetOptions(&TimerInstancePtr,
      XPAR_AXI_TIMER_0_DEVICE_ID,
      (XTC_INT_MODE_OPTION | XTC_AUTO_RELOAD_OPTION ));
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-7 :PS GPIO Intialization
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  GpioConfigPtr = XGpioPs_LookupConfig(XPAR_PS7_GPIO_0_DEVICE_ID);
  if(GpioConfigPtr == NULL)
    return XST_FAILURE;
  xStatus = XGpioPs_CfgInitialize(&psGpioInstancePtr,
      GpioConfigPtr,
      GpioConfigPtr->BaseAddr);
  if(XST_SUCCESS != xStatus)
    print(" PS GPIO INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-8 :PS GPIO pin setting to Output
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpioPs_SetDirectionPin(&psGpioInstancePtr, iPinNumber,uPinDirection);
  XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumber,1);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-9 :EMIO PIN Setting to Input port
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  XGpioPs_SetDirectionPin(&psGpioInstancePtr,
      iPinNumberEMIO,uPinDirectionEMIO);
  XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, iPinNumberEMIO,0);
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-10 : SCUGIC interrupt controller Initialization
  //Registration of the Timer ISR
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  xStatus=
      ScuGicInterrupt_Init(XPAR_PS7_SCUGIC_0_DEVICE_ID,&TimerInstancePtr);
  if(XST_SUCCESS != xStatus)
    print(" :( SCUGIC INIT FAILED
r");
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  //Step-11 :User selection procedure to select and execute tests
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
int Status;
  Status = SetupInterruptSystem();
  t  if (Status != XST_SUCCESS) {
  t    print("Interrupt Setup FAILED
r");

  ttreturn XST_FAILURE;
  t  }
  while(1)
{/*
        Readstatus = XGpio_DiscreteRead(&Gpio, 1);
        if(1== Readstatus)
        {
            XTmrCtr_Start(&TimerInstancePtr,0);

            print(" :( SCUGIC INIT FAILED
r");
        }
        */

}

          //while(InterruptFlag != 1)

         // InterruptFlag = 0;




  return 0;
}



void GpioIsr(void *InstancePtr)
{
tu32 Buttons;  // Paste near top of function, with variables
tu32 New_DutyCycle; // Paste near top of function, with variables

tXGpio *GpioPtr = (XGpio *)InstancePtr;
t/*
t * Disable the interrupt
t */
tXGpio_InterruptDisable(GpioPtr, BUTTON_INTERRUPT);
t/*
t * There should not be any other interrupts occuring other
t * than the the button changes
t */
tif ((XGpio_InterruptGetStatus(GpioPtr) & BUTTON_INTERRUPT)!= BUTTON_INTERRUPT) {
ttreturn;
t}
t/*
t * Read state of push buttons and determine which ones changed
t * states from the previous interrupt. Save a copy of the buttons
t * for the next interrupt
t */
tButtons = XGpio_DiscreteRead(&Gpio, BUTTON_CHANNEL);
tprintf("Brightness updated to: %d
r", Buttons);

tif (Buttons == 1) {

ttxil_printf("Button 1r
");
       XTmrCtr_Start(&TimerInstancePtr,0);

ttVar = 1;t}
tif (Buttons == 2) {
ttxil_printf("Button 2r
");
ttVar = 2;t}
tif (Buttons == 4) {
ttxil_printf("Button 3r
");
ttVar = 4;t}
tif (Buttons == 8) {
ttxil_printf("Button 4r
");
ttVar = 8;t}
tif (Buttons == 16) {
ttxil_printf("Button 5r
");
ttVar = 16;t}

t//New_DutyCycle = brightness/110000;

t//XGpio_DiscreteWrite(&Gpio, LED_CHANNEL, V);
t//xil_printf("Brightness updated to: %d
r", New_DutyCycle);
t/* Clear the interrupt such that it is no longer pending in the GPIO */

t (void)XGpio_InterruptClear(GpioPtr, BUTTON_INTERRUPT);

t /*
t  * Enable the interrupt
t  */
t XGpio_InterruptEnable(GpioPtr, BUTTON_INTERRUPT);
t print("Interrupt Processed r
");

}


/****************************************************************************/
/**
* This function sets up the interrupt system for the example.  The processing
* contained in this funtion assumes the hardware system was built with
* and interrupt controller.
*
* @paramtNone.
*
* @returntA status indicating XST_SUCCESS or a value that is contained in
*ttxstatus.h.
*
* @notettNone.
*
*****************************************************************************/
int SetupInterruptSystem()
{
tint Result;
tINTC *IntcInstancePtr = &Intc;

#ifdef XPAR_INTC_0_DEVICE_ID
t/*
t * Initialize the interrupt controller driver so that it's ready to use.
t * specify the device ID that was generated in xparameters.h
t */
tResult = XIntc_Initialize(IntcInstancePtr, INTC_DEVICE_ID);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

t/* Hook up interrupt service routine */
tXIntc_Connect(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
tt      (Xil_ExceptionHandler)GpioIsr, &Gpio);

t/* Enable the interrupt vector at the interrupt controller */

tXIntc_Enable(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID);

t/*
t * Start the interrupt controller such that interrupts are recognized
t * and handled by the processor
t */
tResult = XIntc_Start(IntcInstancePtr, XIN_REAL_MODE);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

#else
tXScuGic_Config *IntcConfig;

t/*
t * Initialize the interrupt controller driver so that it is ready to
t * use.
t */
tIntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
tif (NULL == IntcConfig) {
ttreturn XST_FAILURE;
t}

tResult = XScuGic_CfgInitialize(IntcInstancePtr, IntcConfig,
tttttIntcConfig->CpuBaseAddress);
tif (Result != XST_SUCCESS) {
ttreturn XST_FAILURE;
t}

tXScuGic_SetPriorityTriggerType(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
ttttt0xA0, 0x3);

t/*
t * Connect the interrupt handler that will be called when an
t * interrupt occurs for the device.
t */
tResult = XScuGic_Connect(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID,
tttt (Xil_ExceptionHandler)GpioIsr, &Gpio);
tif (Result != XST_SUCCESS) {
ttreturn Result;
t}

t/*
t * Enable the interrupt for the GPIO device.
t */
tXScuGic_Enable(IntcInstancePtr, INTC_GPIO_INTERRUPT_ID);
#endif

t/*
t * Enable the GPIO channel interrupts so that push button can be
t * detected and enable interrupts for the GPIO device
t */
tXGpio_InterruptEnable(&Gpio, BUTTON_INTERRUPT);
tXGpio_InterruptGlobalEnable(&Gpio);

t/*
t * Initialize the exception table and register the interrupt
t * controller handler with the exception table
t */
tXil_ExceptionInit();

tXil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
ttt (Xil_ExceptionHandler)INTC_HANDLER, IntcInstancePtr);

t/* Enable non-critical exceptions */
tXil_ExceptionEnable();

treturn XST_SUCCESS;
}