int IntcExample(u16 DeviceId)
{
int Status;
Status = XIntc_Initialize(&InterruptController, DeviceId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XIntc_SelfTest(&InterruptController);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = SetUpInterruptSystem(&InterruptController);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XIntc_SimulateIntr(&InterruptController, INTC_DEVICE_INT_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
while (1)
{
if (InterruptProcessed) {
break;
}
}
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;
}
/**
*
* 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 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.
*
****************************************************************************/
int setUpInterruptSystem()
{
int Status;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
Status = XIntc_Initialize(&InterruptController, INTC_DEVICE_ID);
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;
}
/*
* 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 = XIntc_Connect(&InterruptController, INTC_DEVICE_INT_ID,
(XInterruptHandler)hwTimerISR,
(void *)0);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Start the interrupt controller such that interrupts are enabled for
* all devices that cause interrupts, specify simulation mode so that
* an interrupt can be caused by software rather than a real hardware
* interrupt.
*/
Status = XIntc_Start(&InterruptController, XIN_REAL_MODE);
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.
*/
XIntc_Enable(&InterruptController, INTC_DEVICE_INT_ID);
/*
* Initialize the exception table.
*/
Xil_ExceptionInit();
/*
* Register the interrupt controller handler with the exception table.
*/
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)XIntc_InterruptHandler,
&InterruptController);
/*
* Enable exceptions.
*/
Xil_ExceptionEnable();
return XST_SUCCESS;
}
