tmrctr
Xilinx SDK Drivers API Documentation
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.

 

Functions

int TmrCtrFastIntrExample (XIntc *IntcInstancePtr, XTmrCtr *TmrCtrInstancePtr, u16 DeviceId, u16 IntrId, u8 TmrCtrNumber)
 This function does a minimal test on the timer counter device and driver as a design example. More...
 

Function Documentation

int TmrCtrFastIntrExample ( XIntc *  IntcInstancePtr,
XTmrCtr TmrCtrInstancePtr,
u16  DeviceId,
u16  IntrId,
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
IntcInstancePtris a pointer to the Interrupt Controller driver Instance
TmrCtrInstancePtris a pointer to the XTmrCtr driver Instance
DeviceIdis the XPAR_<TmrCtr_instance>_DEVICE_ID value from xparameters.h
IntrIdis XPAR_<INTC_instance>_<TmrCtr_instance>_VEC_ID value from xparameters.h
TmrCtrNumberis 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
This function contains an infinite loop such that if interrupts are not working it may never return.

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