xwdttb_winwdt_example.c File Reference

Overview

This file contains a design example using the Watchdog Timer Timebase (XWdtTb) driver with window feature.

The WDTTB core will be generated either in legacy or window feature.

Note

None

MODIFICATION HISTORY:

Ver   Who  Date     Changes



4.0   sha  02/04/16 First release.
4.4   sne  03/04/19 Added support for Versal.
4.5     sne  09/27/19 Updated example file to support AXI Timebase WDT
              and WWDT.
5.0     sne  03/11/20 Added XWdtTb_ConfigureWDTMode api to configure
              mode.
5.7     sb   07/12/23 Added support for system device-tree flow.

Macros
#define	WDTTB_FW_COUNT   31
	Number of clock cycles for first window. More...
#define	WDTTB_SW_COUNT   0x01110000
	Number of clock cycles for second window. More...
#define	WDTTB_BYTE_COUNT   154
	Selected byte count. More...
#define	WDTTB_BYTE_SEGMENT   2
	Byte segment selected. More...
#define	WDTTB_SST_COUNT   0x00011000
	Number of clock cycles for Second sequence Timer. More...

Functions
int	WinWdtTbExample (u16 DeviceId)
	This function tests the functioning of the TimeBase WatchDog Timer module with window feature in the polled mode. More...
int	main (void)
	Main function to call the example.This function is not included if the example is generated from the TestAppGen test tool. More...

Macro Definition Documentation

#define WDTTB_BYTE_COUNT   154

Selected byte count.

Referenced by WinWdtTbExample().

#define WDTTB_BYTE_SEGMENT   2

Byte segment selected.

Referenced by WinWdtTbExample().

#define WDTTB_FW_COUNT   31

Number of clock cycles for first window.

Referenced by WinWdtTbExample().

#define WDTTB_SST_COUNT   0x00011000

Number of clock cycles for Second sequence Timer.

Referenced by WinWdtTbExample().

#define WDTTB_SW_COUNT   0x01110000

Number of clock cycles for second window.

Referenced by WinWdtTbExample().

Function Documentation

int main

(

void

)

Main function to call the example.This function is not included if the example is generated from the TestAppGen test tool.

Returns

• XST_SUCCESS if successful.
• XST_FAILURE if unsuccessful.

Note

None.

int WinWdtTbExample

(

u16

DeviceId

)

This function tests the functioning of the TimeBase WatchDog Timer module with window feature in the polled mode.

In window, this function polls interrupt programmed point in second window, checks the interrupt bit is set. If the bit is set clears the bit and restart the watchdog timer. If bit is not cleared before overflowing the second window, the watchdog timer resets.

This function may require some time (seconds or even minutes) to execute because it waits for the watchdog timer to expire.

Parameters

DeviceId

is the XPAR_<WDTB_instance>_DEVICE_ID value from xparameters.h.

Returns

• XST_SUCCESS, in window, there is no bad event.
• XST_FAILURE, otherwise.

Note

None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb_Config::IsPl, WDTTB_BYTE_COUNT, WDTTB_BYTE_SEGMENT, WDTTB_FW_COUNT, WDTTB_SST_COUNT, WDTTB_SW_COUNT, XWdtTb_CfgInitialize(), XWdtTb_ClearResetPending(), XWdtTb_DisableExtraProtection(), XWdtTb_DisableFailCounter(), XWdtTb_DisablePsm(), XWdtTb_DisableSst(), XWdtTb_EnableExtraProtection(), XWdtTb_EnableFailCounter(), XWdtTb_EnablePsm(), XWdtTb_EnableSst(), XWdtTb_IntrClear(), XWdtTb_LookupConfig(), XWDTTB_NO_BAD_EVENT, XWdtTb_ReadReg, XWdtTb_RestartWdt(), XWdtTb_SelfTest(), XWdtTb_SetByteCount(), XWdtTb_SetByteSegment(), XWdtTb_SetWindowCount(), XWdtTb_Start(), XWdtTb_Stop(), XWdtTb_WriteReg, XWT_STR_OFFSET, XWT_STR_WWDT_OFFSET, XWT_TSR0_OFFSET, XWT_TSR0_WWDT_OFFSET, XWT_TSR1_OFFSET, XWT_TSR1_WWDT_OFFSET, and XWT_WWDT.