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*
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******************************************************************************/
/******************************************************************************/
/**
*
* @file xintc_tapp_example.c
*
* This file contains a self test example using the Interrupt Controller driver
* (XIntc) and hardware device. Please reference other device driver examples to
* see more examples of how the Intc and interrupts can be used by a software
* application.
*
* This example shows the use of the Interrupt Controller both with a PowerPC405
* and MicroBlaze processor.
*
* The TestApp Gen utility uses this file to perform the self test and setup
* of Intc for interrupts.
*
* @note
*
* None
*
* <pre>
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- --------------------------------------------------------
* 1.00a sv 06/29/05 Created for Test App Integration
* 1.00c sn 05/09/06 Added Interrupt Setup Function
* 2.00a ktn 10/20/09 Updated to use HAL Processor APIs and minor changes as
* per coding guidelines.
* </pre>
******************************************************************************/
/***************************** Include Files *********************************/
#include "xparameters.h"
#include "xstatus.h"
#include "xintc.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. This definition is not
* included if the example is generated from the TestAppGen test tool.
*/
#ifndef TESTAPP_GEN
#define INTC_DEVICE_ID XPAR_INTC_0_DEVICE_ID
#endif
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
int IntcSelfTestExample(u16 DeviceId);
int IntcInterruptSetup(XIntc *IntcInstancePtr, u16 DeviceId);
/************************** Variable Definitions *****************************/
static XIntc InterruptController; /* Instance of the Interrupt Controller */
/*****************************************************************************/
/**
*
* This is the main function for the Interrupt Controller example. This
* function is not included if the example is generated from the TestAppGen test
* tool.
*
* @param None.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
#ifndef TESTAPP_GEN
int main(void)
{
int Status;
/*
* Run the Intc example , specify the Device ID generated in
* xparameters.h.
*/
Status = IntcSelfTestExample(INTC_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
#endif
/*****************************************************************************/
/**
*
* This function runs a self-test on the driver/device. This is a destructive
* test. 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 DeviceId is device ID of the Interrupt Controller Device,
* typically XPAR_<INTC_instance>_DEVICE_ID value from
* xparameters.h.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int IntcSelfTestExample(u16 DeviceId)
{
int Status;
/*
* Initialize the interrupt controller driver so that it is ready to use.
*/
Status = XIntc_Initialize(&InterruptController, DeviceId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XIntc_SelfTest(&InterruptController);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function is used by the TestAppGen generated application to setup
* the interrupt controller.
*
* @param IntcInstancePtr is the reference to the Interrupt Controller
* instance.
* @param DeviceId is device ID of the Interrupt Controller Device,
* typically XPAR_<INTC_instance>_DEVICE_ID value from
* xparameters.h.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int IntcInterruptSetup(XIntc *IntcInstancePtr, u16 DeviceId)
{
int Status;
/*
* Initialize the interrupt controller driver so that it is
* ready to use.
*/
Status = XIntc_Initialize(IntcInstancePtr, DeviceId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XIntc_SelfTest(IntcInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* 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,
(void*) 0);
/*
* Enable exceptions.
*/
Xil_ExceptionEnable();
/*
* Start the interrupt controller such that interrupts are enabled for
* all devices that cause interrupts.
*/
Status = XIntc_Start(IntcInstancePtr, XIN_REAL_MODE);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}