xtmrctr_fast_intr_example.c File Reference

Overview

This file contains a design example using the timer counter driver (XTmCtr) and hardware device using fast interrupt mode.This example assumes that the interrupt controller is also present as a part of the system.

 MODIFICATION HISTORY:

 Ver   Who  Date         Changes



 1.00a bss  07/31/12 First release
 4.2   ms   01/23/17 Added xil_printf statement in main function to
                     ensure that "Successfully ran" and "Failed" strings
                     are available in all examples. This is a fix for
                     CR-965028.
 4.5   mus  07/05/18 Updated example to call TmrCtrDisableIntr function
                     with correct arguments. Presently device id is
                     being passed instead of interrupt id. It fixes
                     CR#1006251.
 4.5   mus  07/05/18 Fixed checkpatch errors and warnings.
 4.12  ml   12/07/23 Make TimerExpired as a static variable.
 4.12  mus  03/25/24 Update RESET_VALUE to reduce extecution time to 1 seconds.
 4.15  bdk  12/08/25 Updated comments to support SDT flow for Doxygen
                     documentation.

#include "xtmrctr.h"
#include "xil_exception.h"
#include "xil_printf.h"
#include "xparameters.h"
#include "xinterrupt_wrap.h"

Functions
int	TmrCtrFastIntrExample (XTmrCtr *TmrCtrInstancePtr, UINTPTR BaseAddr, u8 TmrCtrNumber)
	This function does a minimal test on the timer counter device and driver as a design example. More...
int	main (void)
	This is the main function of the Tmrctr example using Fast Interrupt feature in MicroBlaze and Intc controller. More...

Function Documentation

int main

(

void

)

This is the main function of the Tmrctr example using Fast Interrupt feature in MicroBlaze and Intc controller.

Parameters

None.

Returns

- XST_SUCCESS to indicate success.

• XST_FAILURE to indicate a failure.

Note

None.

References TmrCtrFastIntrExample().

int TmrCtrFastIntrExample	(	XTmrCtr *	TmrCtrInstancePtr,
		UINTPTR	BaseAddr,
		u8	TmrCtrNumber
	)

This function does a minimal test on the timer counter device and driver as a design example.

The purpose of this function is to illustrate how to use the XTmrCtr component. It initializes a timer counter and then sets it up in compare mode with auto reload such that a periodic interrupt is generated.

This function uses interrupt driven mode of the timer counter.

Parameters

TmrCtrInstancePtr	is a pointer to the XTmrCtr driver Instance
BaseAddr	is the base address of the XTmrCtr device.
TmrCtrNumber	is the number of the timer to which this handler is associated with.

Returns

• XST_SUCCESS if the Test is successful
• XST_FAILURE if the Test is not successful

Note

In XSCT/classic flow, DeviceId is used to look up the device configuration. This function contains an infinite loop such that if interrupts are not working it may never return.

References XTmrCtr::Config, XTmrCtr_Initialize(), XTmrCtr_SelfTest(), XTmrCtr_SetHandler(), XTmrCtr_SetOptions(), XTmrCtr_SetResetValue(), XTmrCtr_Start(), and XTmrCtr_Stop().

Referenced by main().