wdtps
Vitis Drivers API Documentation
Functions
xwdtps_intr_example.c File Reference

Overview

This file contains a design example using the System Watchdog Timer Device (WdtPs) driver and hardware device using interrupt mode.

This test assumes that the RESET OUTPUT OF WDT IS NOT CONNECTED to the processor and the IRQ output is connected to an interrupt controller attached to the processor

Note
MODIFICATION HISTORY:
Ver   Who    Date     Changes






1.00a ecm/jz 01/15/10 First release
3.1     sg         08/20/18 Updated interrupt example to fix interrupt ID
                                                conflict issue
3.6     sb         06/27/23 Added support for system device-tree flow.
 



Functions


int WdtPsIntrExample (XScuGic *IntcInstancePtr, XWdtPs *WdtInstancePtr, u16 WdtDeviceId, u16 WdtIntrId)


 This function tests the functioning of the System WatchDog Timer driver in the Interrupt mode.  More...


 


int main (void)


 Main function to call the Wdt interrupt example.  More...


 




Function Documentation






      

        

          int main 
          (
          void 
          )
          
        

      





Main function to call the Wdt interrupt example. 


Returns
XST_SUCCESS if successful, otherwise XST_FAILURE.


Note
None. 



References WdtPsIntrExample().











      

        

          int WdtPsIntrExample 
          (
          XScuGic * 
          IntcInstancePtr, 
        

        

          
          
          XWdtPs * 
          WdtInstancePtr, 
        

        

          
          
          u16 
          WdtDeviceId, 
        

        

          
          
          u16 
          WdtIntrId 
        

        

          
          )
          
        

      





This function tests the functioning of the System WatchDog Timer driver in the Interrupt mode. 


After one expiration of the timeout interval, an interrupt is generated and the WDT state bit is set to one in the status register.


This function assumes that the reset output of the Wdt device is not connected to the reset of the processor, otherwise, the timer will cause the processor to reset when it expires.


Parameters

  

    
IntcInstancePtris a pointer to the instance of the XScuGic driver. 

    
WdtInstancePtris a pointer to the instance of XWdtPs driver. 

    
WdtDeviceIdis the Device ID of the XWdtPs device. 

    
WdtIntrIdis the Interrupt Id of the XWdtPs device.

  

  




Returns
XST_SUCCESS if successful, otherwise XST_FAILURE.


Note
None. 



References XWdtPs_Config::BaseAddress, XWDTPS_CCR_PSCALE_0008, XWdtPs_CfgInitialize(), XWDTPS_CLK_PRESCALE, XWDTPS_COUNTER_RESET, XWdtPs_DisableOutput(), XWdtPs_EnableOutput(), XWDTPS_IRQ_SIGNAL, XWdtPs_IsWdtExpired, XWdtPs_LookupConfig(), XWDTPS_RESET_SIGNAL, XWdtPs_RestartWdt, XWdtPs_SelfTest(), XWdtPs_SetControlValue(), XWdtPs_Start(), and XWdtPs_Stop().



Referenced by main().