Data Structures
struct	XWdtTb_Config
	This typedef contains configuration information for the device. More...

struct	XWdtTb
	The XWdtTb driver instance data. More...

Macros
#define	XWDTTB_H
	by using protection macros More...

#define	XWDTTB_HW_H_
	Prevent circular inclusions by using protection macros. More...

#define	XWT_GW_WR_MASK 0x00000001U
	Enable Generic Watchdog Warm Reset Register. More...

#define	XWT_GWRR_MASK 0x00000001U
	Generic watchdog Refresh Register. More...

#define	XWT_MAX_SELFTEST_LOOP_COUNT 0x00010000U
	Loopt count. More...

#define	XWT_FW_COUNT 0x0U
	Fist Window count. More...

#define	XWT_SW_COUNT 0x10000U
	Second window count. More...

#define	XWT_GWOR_COUNT 0x00001000U
	Generic Watchdog Offset Regiser. More...

Enumerations
enum	XWdtTb_Event { XWDTTB_NO_BAD_EVENT = 0, XWDTTB_RS_KICK_EVENT, XWDTTB_TSR_MM_EVENT, XWDTTB_SEC_WIN_EVENT }
	This typedef contains enumeration of different events in basic mode. More...

Functions
s32	XWdtTb_CfgInitialize (XWdtTb InstancePtr, const XWdtTb_Config CfgPtr, UINTPTR EffectiveAddr)
	This function initializes the AXI Timebase Watchdog Timer core. More...

s32	XWdtTb_Initialize (XWdtTb *InstancePtr, u16 DeviceId)
	Initialize a specific legacy/window watchdog timer/timebase instance/driver. More...

void	XWdtTb_Start (XWdtTb *InstancePtr)
	This function starts the legacy or window watchdog timer. More...

s32	XWdtTb_Stop (XWdtTb *InstancePtr)
	This function disables the legacy or window watchdog timer. More...

u32	XWdtTb_IsWdtExpired (const XWdtTb *InstancePtr)
	This function checks if the legacy watchdog timer has expired or window watchdog timer either in second window or not in second window. More...

u32	XWdtTb_IsGenericWdtFWExpired (const XWdtTb *InstancePtr)
	This function checks if the Generic watchdog timer has First window expired or not. More...

void	XWdtTb_RestartWdt (const XWdtTb *InstancePtr)
	This function restarts the legacy or window watchdog timer. More...

void	XWdtTb_AlwaysEnable (const XWdtTb *InstancePtr)
	This function keeps Window Watchdog Timer always enabled. More...

void	XWdtTb_ClearLastEvent (const XWdtTb *InstancePtr)
	This function clears event(s) that present after system reset. More...

void	XWdtTb_ClearResetPending (const XWdtTb *InstancePtr)
	This function clears the window watchdog reset pending. More...

void	XWdtTb_IntrClear (const XWdtTb *InstancePtr)
	This function clears window watchdog timer interrupt (WINT) bit. More...

void	XWdtTb_SetByteCount (const XWdtTb *InstancePtr, u32 ByteCount)
	This function sets byte count to determine the interrupt assertion point in the second window configuration. More...

u32	XWdtTb_GetByteCount (const XWdtTb *InstancePtr)
	This function provides byte count value of the selected byte count in the second window configuration. More...

void	XWdtTb_SetByteSegment (const XWdtTb *InstancePtr, u32 ByteSegment)
	This function sets byte segment selection to determine the interrupt assertion point in the second window configuration. More...

u32	XWdtTb_GetByteSegment (const XWdtTb *InstancePtr)
	This function provides byte segment selection in the second window configuration. More...

void	XWdtTb_EnableSst (const XWdtTb *InstancePtr)
	This function enables Second Sequence Timer (SST) function. More...

void	XWdtTb_DisableSst (const XWdtTb *InstancePtr)
	This function disables Second Sequence Timer (SST) function. More...

void	XWdtTb_EnablePsm (const XWdtTb *InstancePtr)
	This function enables Program Sequence Monitor (PSM) function. More...

void	XWdtTb_DisablePsm (const XWdtTb *InstancePtr)
	This function disables Program Sequence Monitor (PSM) function. More...

void	XWdtTb_EnableFailCounter (XWdtTb *InstancePtr)
	This function enables Fail Counter (FC) function. More...

void	XWdtTb_DisableFailCounter (XWdtTb *InstancePtr)
	This function disables Fail Counter (FC) function. More...

void	XWdtTb_EnableExtraProtection (const XWdtTb *InstancePtr)
	This function provides extra safeguard against unintentional clear of WEN bit. More...

void	XWdtTb_DisableExtraProtection (const XWdtTb *InstancePtr)
	This function enables unintentional clear of WEN bit. More...

void	XWdtTb_SetWindowCount (const XWdtTb *InstancePtr, u32 FirstWinCount, u32 SecondWinCount)
	This function sets the count value for the first and second window. More...

void	XWdtTb_SetGenericWdtWindow (const XWdtTb *InstancePtr, u32 GWOR_config)
	This function sets the count value for the GWDT_Compare_value_reg0 ,GWDT_Compare_value_reg1 & GWDT_Offset_regs . More...

void	XWdtTb_SetGenericWdtWindowTimeOut (const XWdtTb *InstancePtr, u32 MilliSeconds)
	This function sets the count value for the GWDT_Offset_regs . More...

u32	XWdtTb_ProgramWDTWidth (const XWdtTb *InstancePtr, u32 width)
	This function programs the width of Watchdog Timer. More...

u8	XWdtTb_GenAnswer (u8 TokenVal, u8 AnsByteCnt, u8 TokenFdbk)
	This routine generates responses based on input token in QA mode. More...

XWdtTb_Config *	XWdtTb_LookupConfig (u16 DeviceId)
	This function returns a reference to an XWdtTb_Config structure based on the core id, DeviceId. More...

s32	XWdtTb_SelfTest (const XWdtTb *InstancePtr)
	This function runs a self-test on the timebase or window if enabled. More...

s32	XWdtTb_DisableWinWdt (XWdtTb *InstancePtr)
	This function disables Window Watchdog Timer feature. More...

void	XWdtTb_EnableTimebaseWdt (XWdtTb *InstancePtr)
	This function enables Timebase Watchdog Timer feature. More...

s32	XWdtTb_DisableTimebaseWdt (XWdtTb *InstancePtr)
	This function Disable Timebase Watchdog Timer feature. More...

Variables
XWdtTb_Config	XWdtTb_ConfigTable []
	Configuration table. More...

XWdtTb_Config	XWdtTb_ConfigTable []
	Configuration table. More...

Register offsets for the WWDT core with Generic & windowing
feature with basic mode. Each register is 32 bits.
#define	XWT_MWR_OFFSET 0x0000U
	Master Write Control Register Offset. More...

#define	XWT_ESR_OFFSET 0x0004U
	Enable & Status Register Offset. More...

#define	XWT_FCR_OFFSET 0x0008U
	Function Control Register Register Offset. More...

#define	XWT_FWR_OFFSET 0x000CU
	First Window Configuration Register Offset. More...

#define	XWT_SWR_OFFSET 0x0010U
	Second Window Configuration Register Offset. More...

#define	XWT_TSR0_WWDT_OFFSET 0x0018U
	Task Signature Register 0 Offset for WWDT. More...

#define	XWT_TSR1_WWDT_OFFSET 0x001CU
	Task Signature Register 1 Offset for WWDT. More...

#define	XWT_STR_WWDT_OFFSET 0x0020U
	Second Sequence Timer Register Offset for WWDT. More...

#define	XWT_TSR0_OFFSET 0x0014U
	Task Signature Register 0 Offset. More...

#define	XWT_TSR1_OFFSET 0x0018U
	Task Signature Register 1 Offset. More...

#define	XWT_STR_OFFSET 0x001CU
	Second Sequence Timer Register Offset. More...

#define	XWT_SSTWR_OFFSET 0x0014U
	Second Sequence Timer Window Configuration Register Offset. More...

#define	XWT_TFR_OFFSET 0x0024U
	Token Feedback Register Offset. More...

#define	XWT_TRR_OFFSET 0x0028U
	Token Response Register offset. More...

#define	XWT_IENR_OFFSET 0x0030U
	Interrupt Enable Register Offset. More...

#define	XWT_IDR_OFFSET 0x0034U
	Interrupt Disable Register Offset. More...

#define	XWT_IMR_OFFSET 0x0038U
	Interrupt Mask Register Offset. More...

#define	XWT_GWRR_OFFSET 0x1000U
	Generic Watchdog Refresh Register Offset. More...

#define	XWT_GWCSR_OFFSET 0x2000U
	Generic Watchdog Control and Status Register Offset. More...

#define	XWT_GWOR_OFFSET 0x2008U
	Generic Watchdog Offset Register Offset. More...

#define	XWT_GWCVR0_OFFSET 0x2010U
	Generic Watchdog Compare Value Register 0 Offset. More...

#define	XWT_GWCVR1_OFFSET 0x2014U
	Generic Watchdog Compare Value Register 1 Offset. More...

#define	XWT_GW_WR_OFFSET 0x2FD0U
	Generic Watchdog Warm Reset Register Offset. More...

Register offsets for the AXI Timebase WDT core. Each register is 32
bits.
#define	XWT_TWCSR0_OFFSET 0x00U
	Control/Status Register 0 Offset. More...

#define	XWT_TWCSR1_OFFSET 0x04U
	Control/Status Register 1 Offset. More...

#define	XWT_TBR_OFFSET 0x08U
	Timebase Register Offset. More...

Control/Status Register 0 bits
#define	XWT_CSR0_WRS_MASK 0x00000008U
	Reset status Mask. More...

#define	XWT_CSR0_WDS_MASK 0x00000004U
	Timer state Mask. More...

#define	XWT_CSR0_EWDT1_MASK 0x00000002U
	Enable bit 1 Mask. More...

Control/Status Register 0/1 bits
#define	XWT_CSRX_EWDT2_MASK 0x00000001U
	Enable bit 2 Mask. More...

Master Write Control bits
#define	XWT_MWR_AEN_MASK 0x00000002U
	Always Enable Mask. More...

#define	XWT_MWR_MWC_MASK 0x00000001U
	Master Write Control Mask. More...

Enable & Status Register bits
#define	XWT_ESR_LBE_MASK 0x07000000U
	Last Bad Event Mask. More...

#define	XWT_ESR_FCV_MASK 0x00700000U
	Fail Counter Value Mask. More...

#define	XWT_ESR_WRP_MASK 0x00020000U
	Watchdog Reset Pending Mask. More...

#define	XWT_ESR_WINT_MASK 0x00010000U
	Watchdog Interrupt Mask. More...

#define	XWT_ESR_ACNT_MASK 0x0000C000U
	Answer Count Mask. More...

#define	XWT_ESR_WSW_MASK 0x00000100U
	Watchdog Second Window Mask. More...

#define	XWT_TOKEN_VAL_MASK 0x0000003CU
	Token Value Mask. More...

#define	XWT_ESR_WCFG_MASK 0x00000002U
	Wrong Configuration Mask. More...

#define	XWT_ESR_WEN_MASK 0x00000001U
	Window WDT Enable Mask. More...

#define	XWT_ESR_LBE_SHIFT 24U
	Last Bad Event Shift. More...

#define	XWT_ESR_FCV_SHIFT 20U
	Fail Counter Value Shift. More...

#define	XWT_ESR_WRP_SHIFT 17U
	Watchdog Reset Pending Shift. More...

#define	XWT_ESR_WINT_SHIFT 16U
	Watchdog Interrupt Shift. More...

#define	XWT_ESR_ACNT_SHIFT 14U
	Watchdog Answer Cnt Shift. More...

#define	XWT_ESR_WSW_SHIFT 8U
	Watchdog Second Window Shift. More...

#define	XWT_ESR_TOKENVAL_SHIFT 2U
	Token Value Shift. More...

#define	XWT_ESR_WCFG_SHIFT 1U
	Wrong Configuration Shift. More...

Function Control Register bits
#define	XWT_FCR_SBC_MASK 0x0000FF00U
	Selected Byte Count Mask. More...

#define	XWT_FCR_BSS_MASK 0x000000C0U
	Byte Segment Selection Mask. More...

#define	XWT_FCR_SSTE_MASK 0x00000010U
	Second Sequence Timer Enable Mask. More...

#define	XWT_FCR_PSME_MASK 0x00000008U
	Program Sequence Monitor Enable Mask. More...

#define	XWT_FCR_FCE_MASK 0x00000004U
	Fail Counter Enable Mask. More...

#define	XWT_FCR_WM_MASK 0x00000002U
	Window WDT Mode Mask. More...

#define	XWT_FCR_WDP_MASK 0x00000001U
	Window WDT Disable Protection Mask. More...

#define	XWT_FCR_SBC_SHIFT 8U
	Selected Byte Count Shift. More...

#define	XWT_FCR_BSS_SHIFT 6U
	Byte Segment Selection Shift. More...

#define	XWT_FCR_SSTE_SHIFT 4U
	Second Sequence Timer Enable Shift. More...

#define	XWT_FCR_WM_SHIFT 1U
	Window WDT Mode Shift. More...

Token feedback register bits
#define	XWT_TFR_FDBK_MASK 0x00000F00U
	feedback bit More...

#define	XWT_TFR_SEED_MASK 0x0000000FU
	seed bit More...

#define	XWT_TFR_FDBK_SHIFT 8U
	feedback bit shift More...

Token response register bits
#define	XWT_TRR_ANS_MASK 0x000000FFU
	ANS bit. More...

Generic Watchdog Control and Status Register bits
#define	XWT_GWCSR_GWEN_MASK 0x00000001U
	Watchdog enable bit. More...

#define	XWT_GWCSR_GWS1_MASK 0x00000002U
	Generic_wdt_interrupt bit. More...

#define	XWT_GWCSR_GWS2_MASK 0x00000004U
	Generic_wdt_reset bit. More...

Macro Definition Documentation

#define XWDTTB_H

by using protection macros

#define XWDTTB_HW_H_

Prevent circular inclusions by using protection macros.

#define XWT_CSR0_EWDT1_MASK 0x00000002U

Enable bit 1 Mask.

Referenced by XWdtTb_DisableTimebaseWdt(), XWdtTb_EnableTimebaseWdt(), and XWdtTb_LowLevelExample().

#define XWT_CSR0_WDS_MASK 0x00000004U

Timer state Mask.

Referenced by XWdtTb_EnableTimebaseWdt(), XWdtTb_IsWdtExpired(), XWdtTb_LowLevelExample(), and XWdtTb_RestartWdt().

#define XWT_CSR0_WRS_MASK 0x00000008U

Reset status Mask.

Referenced by WdtTbExample(), WdtTbIntrExample(), XWdtTb_EnableTimebaseWdt(), XWdtTb_IsWdtExpired(), XWdtTb_LowLevelExample(), and XWdtTb_RestartWdt().

#define XWT_CSRX_EWDT2_MASK 0x00000001U

Enable bit 2 Mask.

Referenced by XWdtTb_DisableTimebaseWdt(), XWdtTb_EnableTimebaseWdt(), and XWdtTb_LowLevelExample().

#define XWT_ESR_ACNT_MASK 0x0000C000U

Answer Count Mask.

#define XWT_ESR_ACNT_SHIFT 14U

Watchdog Answer Cnt Shift.

#define XWT_ESR_FCV_MASK 0x00700000U

Fail Counter Value Mask.

Referenced by XWdtTb_DisableWinWdt().

#define XWT_ESR_FCV_SHIFT 20U

Fail Counter Value Shift.

Referenced by XWdtTb_DisableWinWdt().

#define XWT_ESR_LBE_MASK 0x07000000U

Last Bad Event Mask.

Referenced by XWdtTb_ClearLastEvent(), and XWdtTb_SelfTest().

#define XWT_ESR_LBE_SHIFT 24U

Last Bad Event Shift.

Referenced by XWdtTb_SelfTest().

#define XWT_ESR_OFFSET 0x0004U

Enable & Status Register Offset.

Referenced by XWdtTb_ClearLastEvent(), XWdtTb_ClearResetPending(), XWdtTb_DisableWinWdt(), XWdtTb_IntrClear(), XWdtTb_IsWdtExpired(), XWdtTb_RestartWdt(), and XWdtTb_SelfTest().

#define XWT_ESR_TOKENVAL_SHIFT 2U

Token Value Shift.

#define XWT_ESR_WCFG_MASK 0x00000002U

Wrong Configuration Mask.

#define XWT_ESR_WCFG_SHIFT 1U

Wrong Configuration Shift.

#define XWT_ESR_WEN_MASK 0x00000001U

Window WDT Enable Mask.

Referenced by XWdtTb_DisableWinWdt(), and XWdtTb_SelfTest().

#define XWT_ESR_WINT_MASK 0x00010000U

Watchdog Interrupt Mask.

Referenced by XWdtTb_IntrClear().

#define XWT_ESR_WINT_SHIFT 16U

Watchdog Interrupt Shift.

#define XWT_ESR_WRP_MASK 0x00020000U

Watchdog Reset Pending Mask.

Referenced by XWdtTb_ClearResetPending().

#define XWT_ESR_WRP_SHIFT 17U

Watchdog Reset Pending Shift.

#define XWT_ESR_WSW_MASK 0x00000100U

Watchdog Second Window Mask.

Referenced by XWdtTb_ClearLastEvent(), XWdtTb_DisableWinWdt(), XWdtTb_IntrClear(), XWdtTb_IsWdtExpired(), XWdtTb_RestartWdt(), and XWdtTb_SelfTest().

#define XWT_ESR_WSW_SHIFT 8U

Watchdog Second Window Shift.

Referenced by XWdtTb_ClearLastEvent(), XWdtTb_DisableWinWdt(), XWdtTb_IntrClear(), and XWdtTb_IsWdtExpired().

#define XWT_FCR_BSS_MASK 0x000000C0U

Byte Segment Selection Mask.

Referenced by XWdtTb_GetByteSegment(), and XWdtTb_SetByteSegment().

#define XWT_FCR_BSS_SHIFT 6U

Byte Segment Selection Shift.

Referenced by XWdtTb_GetByteSegment(), and XWdtTb_SetByteSegment().

#define XWT_FCR_FCE_MASK 0x00000004U

Fail Counter Enable Mask.

Referenced by XWdtTb_DisableFailCounter(), and XWdtTb_EnableFailCounter().

#define XWT_FCR_OFFSET 0x0008U

Function Control Register Register Offset.

Referenced by XWdtTb_DisableExtraProtection(), XWdtTb_DisableFailCounter(), XWdtTb_DisablePsm(), XWdtTb_DisableSst(), XWdtTb_DisableWinWdt(), XWdtTb_EnableExtraProtection(), XWdtTb_EnableFailCounter(), XWdtTb_EnablePsm(), XWdtTb_EnableSst(), XWdtTb_GetByteCount(), XWdtTb_GetByteSegment(), XWdtTb_IntrClear(), XWdtTb_SetByteCount(), and XWdtTb_SetByteSegment().

#define XWT_FCR_PSME_MASK 0x00000008U

Program Sequence Monitor Enable Mask.

Referenced by XWdtTb_DisablePsm(), and XWdtTb_EnablePsm().

#define XWT_FCR_SBC_MASK 0x0000FF00U

Selected Byte Count Mask.

Referenced by XWdtTb_GetByteCount(), and XWdtTb_SetByteCount().

#define XWT_FCR_SBC_SHIFT 8U

Selected Byte Count Shift.

Referenced by XWdtTb_GetByteCount(), and XWdtTb_SetByteCount().

#define XWT_FCR_SSTE_MASK 0x00000010U

Second Sequence Timer Enable Mask.

Referenced by XWdtTb_DisableSst(), and XWdtTb_EnableSst().

#define XWT_FCR_SSTE_SHIFT 4U

Second Sequence Timer Enable Shift.

#define XWT_FCR_WDP_MASK 0x00000001U

Window WDT Disable Protection Mask.

Referenced by XWdtTb_DisableExtraProtection(), and XWdtTb_EnableExtraProtection().

#define XWT_FCR_WM_MASK 0x00000002U

Window WDT Mode Mask.

Referenced by XWdtTb_DisableWinWdt(), and XWdtTb_IntrClear().

#define XWT_FCR_WM_SHIFT 1U

Window WDT Mode Shift.

#define XWT_FW_COUNT 0x0U

Fist Window count.

Referenced by XWdtTb_SelfTest().

#define XWT_FWR_OFFSET 0x000CU

First Window Configuration Register Offset.

Referenced by XWdtTb_SelfTest(), and XWdtTb_SetWindowCount().

#define XWT_GW_WR_MASK 0x00000001U

Enable Generic Watchdog Warm Reset Register.

Referenced by XWdtTb_CfgInitialize().

#define XWT_GW_WR_OFFSET 0x2FD0U

Generic Watchdog Warm Reset Register Offset.

Referenced by XWdtTb_CfgInitialize().

#define XWT_GWCSR_GWEN_MASK 0x00000001U

Watchdog enable bit.

Referenced by XWdtTb_SelfTest().

#define XWT_GWCSR_GWS1_MASK 0x00000002U

Generic_wdt_interrupt bit.

Referenced by XWdtTb_IsGenericWdtFWExpired().

#define XWT_GWCSR_GWS2_MASK 0x00000004U

Generic_wdt_reset bit.

Referenced by XWdtTb_IsWdtExpired().

#define XWT_GWCSR_OFFSET 0x2000U

Generic Watchdog Control and Status Register Offset.

Referenced by XWdtTb_IsGenericWdtFWExpired(), XWdtTb_IsWdtExpired(), and XWdtTb_SelfTest().

#define XWT_GWCVR0_OFFSET 0x2010U

Generic Watchdog Compare Value Register 0 Offset.

#define XWT_GWCVR1_OFFSET 0x2014U

Generic Watchdog Compare Value Register 1 Offset.

#define XWT_GWOR_COUNT 0x00001000U

Generic Watchdog Offset Regiser.

Referenced by XWdtTb_SelfTest().

#define XWT_GWOR_OFFSET 0x2008U

Generic Watchdog Offset Register Offset.

Referenced by XWdtTb_SelfTest(), XWdtTb_SetGenericWdtWindow(), and XWdtTb_SetGenericWdtWindowTimeOut().

#define XWT_GWRR_MASK 0x00000001U

Generic watchdog Refresh Register.

Referenced by XWdtTb_RestartWdt().

#define XWT_GWRR_OFFSET 0x1000U

Generic Watchdog Refresh Register Offset.

Referenced by XWdtTb_RestartWdt(), and XWdtTb_SelfTest().

#define XWT_IDR_OFFSET 0x0034U

Interrupt Disable Register Offset.

#define XWT_IENR_OFFSET 0x0030U

Interrupt Enable Register Offset.

#define XWT_IMR_OFFSET 0x0038U

Interrupt Mask Register Offset.

#define XWT_MAX_SELFTEST_LOOP_COUNT 0x00010000U

Loopt count.

Referenced by XWdtTb_SelfTest().

#define XWT_MWR_AEN_MASK 0x00000002U

Always Enable Mask.

Referenced by XWdtTb_AlwaysEnable().

#define XWT_MWR_MWC_MASK 0x00000001U

Master Write Control Mask.

#define XWT_MWR_OFFSET 0x0000U

Master Write Control Register Offset.

Referenced by XWdtTb_AlwaysEnable(), XWdtTb_ProgramWDTWidth(), and XWdtTb_SelfTest().

#define XWT_SSTWR_OFFSET 0x0014U

Second Sequence Timer Window Configuration Register Offset.

#define XWT_STR_OFFSET 0x001CU

Second Sequence Timer Register Offset.

Referenced by WinWdtTbExample().

#define XWT_STR_WWDT_OFFSET 0x0020U

Second Sequence Timer Register Offset for WWDT.

Referenced by WinWdtTbExample().

#define XWT_SW_COUNT 0x10000U

Second window count.

Referenced by XWdtTb_SelfTest().

#define XWT_SWR_OFFSET 0x0010U

Second Window Configuration Register Offset.

Referenced by XWdtTb_SelfTest(), and XWdtTb_SetWindowCount().

#define XWT_TBR_OFFSET 0x08U

Timebase Register Offset.

Referenced by XWdtTb_SelfTest().

#define XWT_TFR_FDBK_MASK 0x00000F00U

feedback bit

#define XWT_TFR_FDBK_SHIFT 8U

feedback bit shift

#define XWT_TFR_OFFSET 0x0024U

Token Feedback Register Offset.

#define XWT_TFR_SEED_MASK 0x0000000FU

seed bit

#define XWT_TOKEN_VAL_MASK 0x0000003CU

Token Value Mask.

#define XWT_TRR_ANS_MASK 0x000000FFU

ANS bit.

#define XWT_TRR_OFFSET 0x0028U

Token Response Register offset.

#define XWT_TSR0_OFFSET 0x0014U

Task Signature Register 0 Offset.

Referenced by WinWdtTbExample().

#define XWT_TSR0_WWDT_OFFSET 0x0018U

Task Signature Register 0 Offset for WWDT.

Referenced by WinWdtTbExample().

#define XWT_TSR1_OFFSET 0x0018U

Task Signature Register 1 Offset.

Referenced by WinWdtTbExample().

#define XWT_TSR1_WWDT_OFFSET 0x001CU

Task Signature Register 1 Offset for WWDT.

Referenced by WinWdtTbExample().

#define XWT_TWCSR0_OFFSET 0x00U

Control/Status Register 0 Offset.

Referenced by WdtTbExample(), WdtTbIntrExample(), XWdtTb_DisableTimebaseWdt(), XWdtTb_EnableTimebaseWdt(), XWdtTb_IsWdtExpired(), XWdtTb_LowLevelExample(), and XWdtTb_RestartWdt().

#define XWT_TWCSR1_OFFSET 0x04U

Control/Status Register 1 Offset.

Referenced by XWdtTb_DisableTimebaseWdt(), XWdtTb_EnableTimebaseWdt(), and XWdtTb_LowLevelExample().

Enumeration Type Documentation

enum XWdtTb_Event

This typedef contains enumeration of different events in basic mode.

Enumerator
XWDTTB_NO_BAD_EVENT	No bad event.
XWDTTB_RS_KICK_EVENT	Restart kick or disable attempt in first window.
XWDTTB_TSR_MM_EVENT	TSR mismatch.
XWDTTB_SEC_WIN_EVENT	Second window overflow.

Function Documentation

void XWdtTb_AlwaysEnable ( const XWdtTb * InstancePtr )

This function keeps Window Watchdog Timer always enabled.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This must be called before Window WDT is enabled. Once Window WDT is enabled, it can only be disabled by applying reset.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_MWR_AEN_MASK, and XWT_MWR_OFFSET.

s32 XWdtTb_CfgInitialize	(	XWdtTb *	InstancePtr,
		const XWdtTb_Config *	CfgPtr,
		UINTPTR	EffectiveAddr
	)

This function initializes the AXI Timebase Watchdog Timer core.

This function must be called prior to using the core. Initialization of the core includes setting up the instance data and ensuring the hardware is in a quiescent state.

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
CfgPtr	points to the configuration structure associated with the AXI Timebase Watchdog Timer core.
EffectiveAddr	is the base address of the device. If address translation is being used, then this parameter must reflect the virtual base address. Otherwise, the physical address should be used.

Returns

XST_SUCCESS if initialization was successful.
XST_DEVICE_IS_STARTED if the device has already been started.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb_Config::Clock, XWdtTb::Config, XWdtTb_Config::DeviceId, XWdtTb::EnableFailCounter, XWdtTb::EnableWinMode, XWdtTb_Config::EnableWinWdt, XWdtTb_Config::IsPl, XWdtTb::IsReady, XWdtTb::IsStarted, XWdtTb_Config::MaxCountWidth, XWdtTb_Config::SstCountWidth, XWdtTb_WriteReg, XWT_GW_WR_MASK, and XWT_GW_WR_OFFSET.

Referenced by GWdtIntrExample(), GWdtTbExample(), GWdtTbSelfTestExample(), WdtTbExample(), WdtTbIntrExample(), WdtTbSelfTestExample(), WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_ClearLastEvent ( const XWdtTb * InstancePtr )

This function clears event(s) that present after system reset.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: Event can be cleared by applying reset to the core followed by writing 111. Writing any other pattern has no effect.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_ESR_LBE_MASK, XWT_ESR_OFFSET, XWT_ESR_WSW_MASK, XWT_ESR_WSW_SHIFT, and XWT_ONE.

void XWdtTb_ClearResetPending ( const XWdtTb * InstancePtr )

This function clears the window watchdog reset pending.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_ESR_OFFSET, and XWT_ESR_WRP_MASK.

Referenced by WinWdtTbExample().

void XWdtTb_DisableExtraProtection ( const XWdtTb * InstancePtr )

This function enables unintentional clear of WEN bit.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_WDP_MASK.

Referenced by WinWdtTbExample().

void XWdtTb_DisableFailCounter ( XWdtTb * InstancePtr )

This function disables Fail Counter (FC) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableFailCounter, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_FCE_MASK, and XWT_FCR_OFFSET.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_DisablePsm ( const XWdtTb * InstancePtr )

This function disables Program Sequence Monitor (PSM) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_PSME_MASK.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_DisableSst ( const XWdtTb * InstancePtr )

This function disables Second Sequence Timer (SST) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_SSTE_MASK.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

s32 XWdtTb_DisableTimebaseWdt ( XWdtTb * InstancePtr )

This function Disable Timebase Watchdog Timer feature.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

XST_SUCESS, if Timebase WDT feature is disabled.
XST_FAILURE, if Timebase WDT feature is not disabled.

Note: This will Disable Timebase Watchdog Timer.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::IsStarted, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_CSR0_EWDT1_MASK, XWT_CSRX_EWDT2_MASK, XWT_TWCSR0_OFFSET, XWT_TWCSR1_OFFSET, and XWT_ZERO.

Referenced by XWdtTb_Stop().

s32 XWdtTb_DisableWinWdt ( XWdtTb * InstancePtr )

This function disables Window Watchdog Timer feature.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

XST_SUCESS, if Window WDT feature is disabled.
XST_FAILURE, if Window WDT feature is not disabled. Refer note section for the reasons.

Note

Disabling watchdog in first window duration is considered as bade event. It can only be disabled in the second window duration.
If fail counter is enabled, watchdog can be disabled only when fail counter is zero.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableFailCounter, XWdtTb::EnableWinMode, XWdtTb::IsStarted, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_ESR_FCV_MASK, XWT_ESR_FCV_SHIFT, XWT_ESR_OFFSET, XWT_ESR_WEN_MASK, XWT_ESR_WSW_MASK, XWT_ESR_WSW_SHIFT, XWT_FCR_OFFSET, XWT_FCR_WM_MASK, XWT_ONE, and XWT_ZERO.

Referenced by XWdtTb_Stop().

void XWdtTb_EnableExtraProtection ( const XWdtTb * InstancePtr )

This function provides extra safeguard against unintentional clear of WEN bit.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_WDP_MASK.

Referenced by WinWdtTbExample().

void XWdtTb_EnableFailCounter ( XWdtTb * InstancePtr )

This function enables Fail Counter (FC) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.
When fail counter is enabled, reset is generated when fail counter is 7 and another bad event happens.
When fail counter is disabled, one bad event triggers reset either immediately when SST is disabled or after SST count delay when SST is enabled.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableFailCounter, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_FCE_MASK, and XWT_FCR_OFFSET.

Referenced by WinWdtTbExample().

void XWdtTb_EnablePsm ( const XWdtTb * InstancePtr )

This function enables Program Sequence Monitor (PSM) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.
PSM enables Task Signature Register comparison. When PSM is enabled, core checks and compares the contents of TSR0 and TSR1 registers at the restart kick/disablement of Window WDT in second window. If they match, no effect. If they do not match, reset is generated either immediately when SST is disabled or after SST count delay when SST is enabled.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_PSME_MASK.

Referenced by WinWdtTbExample().

void XWdtTb_EnableSst ( const XWdtTb * InstancePtr )

This function enables Second Sequence Timer (SST) function.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.
SST provides additional time to software by delaying the inevitable window watchdog reset generation by SST count (SC) delay. This is an independent function and can be enabled in any mode w/ or w/o other options.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, and XWT_FCR_SSTE_MASK.

Referenced by WinWdtTbExample().

void XWdtTb_EnableTimebaseWdt ( XWdtTb * InstancePtr )

This function enables Timebase Watchdog Timer feature.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: This will Start the Timebase Watchdog timer.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::IsStarted, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_CSR0_EWDT1_MASK, XWT_CSR0_WDS_MASK, XWT_CSR0_WRS_MASK, XWT_CSRX_EWDT2_MASK, XWT_TWCSR0_OFFSET, and XWT_TWCSR1_OFFSET.

Referenced by XWdtTb_Start().

u8 XWdtTb_GenAnswer	(	u8	TokenVal,
		u8	AnsByteCnt,
		u8	TokenFdbk
	)

This routine generates responses based on input token in QA mode.

Parameters

TokenVal	: Token value read from TVAL
AnsByteCnt	: Byte on which response is generated
TokenFdbk,:	Token feedback value read from TFR

Returns: Response byte (calculated based on logic given WWDT architecture)

Note: None.

u32 XWdtTb_GetByteCount ( const XWdtTb * InstancePtr )

This function provides byte count value of the selected byte count in the second window configuration.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: Byte count value of the selected byte count in the second window configuration.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWT_FCR_OFFSET, XWT_FCR_SBC_MASK, and XWT_FCR_SBC_SHIFT.

u32 XWdtTb_GetByteSegment ( const XWdtTb * InstancePtr )

This function provides byte segment selection in the second window configuration.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

Byte segment selection value as

0 = Second window byte 0 selected.
1 = Second window byte 1 selected.
2 = Second window byte 2 selected.
3 = Second window byte 3 selected.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWT_FCR_BSS_MASK, XWT_FCR_BSS_SHIFT, and XWT_FCR_OFFSET.

s32 XWdtTb_Initialize	(	XWdtTb *	InstancePtr,
		u16	DeviceId
	)

Initialize a specific legacy/window watchdog timer/timebase instance/driver.

This function must be called before other functions of the driver are called.

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
DeviceId	is the unique id of the device controlled by this XWdtTb instance. Passing in a device id associates the generic XWdtTb instance to a specific device, as chosen by the caller or application developer.

Returns

XST_SUCCESS if initialization was successful
XST_DEVICE_IS_STARTED if the device has already been started
XST_DEVICE_NOT_FOUND if the configuration for device ID was not found

Note: None.

References XWdtTb::Config, XWdtTb::EnableFailCounter, XWdtTb::EnableWinMode, XWdtTb::IsReady, XWdtTb::IsStarted, and XWdtTb_LookupConfig().

void XWdtTb_IntrClear ( const XWdtTb * InstancePtr )

This function clears window watchdog timer interrupt (WINT) bit.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_ESR_OFFSET, XWT_ESR_WINT_MASK, XWT_ESR_WSW_MASK, XWT_ESR_WSW_SHIFT, XWT_FCR_OFFSET, XWT_FCR_WM_MASK, and XWT_ONE.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

u32 XWdtTb_IsGenericWdtFWExpired ( const XWdtTb * InstancePtr )

This function checks if the Generic watchdog timer has First window expired or not.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

TRUE, if the Generic watchdog timer First window has expired.
FALSE if the Generic watchdog is not expired First window.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb_ReadReg, XWT_GWCSR_GWS1_MASK, and XWT_GWCSR_OFFSET.

Referenced by GWdtTbExample().

u32 XWdtTb_IsWdtExpired ( const XWdtTb * InstancePtr )

This function checks if the legacy watchdog timer has expired or window watchdog timer either in second window or not in second window.

This function is used for polled mode in legacy watchdog timer.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

TRUE, if the legacy watchdog timer has expired or window watchdog timer is not in second window.
FALSE if the legacy watchdog is not expired or window watchdog is in second window.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_Config::IsPl, XWdtTb::IsReady, XWdtTb_ReadReg, XWT_CSR0_WDS_MASK, XWT_CSR0_WRS_MASK, XWT_ESR_OFFSET, XWT_ESR_WSW_MASK, XWT_ESR_WSW_SHIFT, XWT_GWCSR_GWS2_MASK, XWT_GWCSR_OFFSET, and XWT_TWCSR0_OFFSET.

Referenced by GWdtTbExample(), and WdtTbExample().

XWdtTb_Config * XWdtTb_LookupConfig ( u16 DeviceId )

This function returns a reference to an XWdtTb_Config structure based on the core id, DeviceId.

The return value will refer to an entry in the device configuration table defined in the xwdttb_g.c file.

Parameters

DeviceId is the unique core ID of the XWdtTb core for the lookup operation.

Returns: XWdtTb_LookupConfig returns a reference to a config record in the configuration table (in xwdttb_g.c) corresponding to DeviceId, or NULL if no match is found.

Note: None.

References XWdtTb_ConfigTable.

Referenced by GWdtIntrExample(), GWdtTbExample(), GWdtTbSelfTestExample(), WdtTbExample(), WdtTbIntrExample(), WdtTbSelfTestExample(), WinWdtIntrExample(), WinWdtTbExample(), and XWdtTb_Initialize().

u32 XWdtTb_ProgramWDTWidth	(	const XWdtTb *	InstancePtr,
		u32	width
	)

This function programs the width of Watchdog Timer.

Parameters

InstancePtr	- InstancePtr is a pointer to the XWdtTb instance to be worked on.
width	- width of the Watchdog Timer.

Returns

XST_SUCESS, if window mode is disabled and the width is programmed correctly.
XST_FAILURE, if Window mode is enabled or if the width is not in the range of 8-31

Note

This function is applicable only when the window mode is disabled.
This function should be called before starting the timer. Valid values for the width are 8-31. Programming any other value returns failure.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_WriteReg, XWT_END_VALUE, XWT_MWR_OFFSET, and XWT_START_VALUE.

void XWdtTb_RestartWdt ( const XWdtTb * InstancePtr )

This function restarts the legacy or window watchdog timer.

An application needs to call this function periodically to keep the timer from asserting the reset output.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_Config::IsPl, XWdtTb::IsReady, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_CSR0_WDS_MASK, XWT_CSR0_WRS_MASK, XWT_ESR_OFFSET, XWT_ESR_WSW_MASK, XWT_GWRR_MASK, XWT_GWRR_OFFSET, and XWT_TWCSR0_OFFSET.

Referenced by GWdtTbExample(), WdtTbExample(), WinWdtIntrExample(), and WinWdtTbExample().

s32 XWdtTb_SelfTest ( const XWdtTb * InstancePtr )

This function runs a self-test on the timebase or window if enabled.

Timebase test verifies that the timebase is incrementing. The watchdog timer is not tested due to the time required to wait for the watchdog timer to expire. The time consumed by this test is dependent on the system clock and the configuration of the dividers in for the input clock of the timebase.

Window test verifies that the windowing feature does not generate bad event after enabling window feature with first and second window count. It disables window feature immediately.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

XST_SUCCESS if self-test was successful.
XST_WDTTB_TIMER_FAILED if the timebase is not incrementing.
XST_FAILURE if self-test was failed.

Note: None.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_Config::IsPl, XWdtTb::IsReady, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_ESR_LBE_MASK, XWT_ESR_LBE_SHIFT, XWT_ESR_OFFSET, XWT_ESR_WEN_MASK, XWT_ESR_WSW_MASK, XWT_FW_COUNT, XWT_FWR_OFFSET, XWT_GWCSR_GWEN_MASK, XWT_GWCSR_OFFSET, XWT_GWOR_COUNT, XWT_GWOR_OFFSET, XWT_GWRR_OFFSET, XWT_MAX_SELFTEST_LOOP_COUNT, XWT_MWR_OFFSET, XWT_SW_COUNT, XWT_SWR_OFFSET, and XWT_TBR_OFFSET.

Referenced by GWdtIntrExample(), GWdtTbExample(), GWdtTbSelfTestExample(), WdtTbExample(), WdtTbIntrExample(), WdtTbSelfTestExample(), WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_SetByteCount	(	const XWdtTb *	InstancePtr,
		u32	ByteCount
	)

This function sets byte count to determine the interrupt assertion point in the second window configuration.

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
ByteCount	specifies the selected byte count value to be set in the second window configuration.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.
This function must be used along with XWdtTb_SetByteSegment.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_OFFSET, XWT_FCR_SBC_MASK, and XWT_FCR_SBC_SHIFT.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_SetByteSegment	(	const XWdtTb *	InstancePtr,
		u32	ByteSegment
	)

This function sets byte segment selection to determine the interrupt assertion point in the second window configuration.

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
ByteSegment	specifies the byte segment selected. 0 = Second window byte 0 selected. 1 = Second window byte 1 selected. 2 = Second window byte 2 selected. 3 = Second window byte 3 selected.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.
This function must be used along with XWdtTb_SetByteCount.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_ReadReg, XWdtTb_WriteReg, XWT_FCR_BSS_MASK, XWT_FCR_BSS_SHIFT, XWT_FCR_OFFSET, and XWT_MAX_BYTE_SEGMENT.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_SetGenericWdtWindow	(	const XWdtTb *	InstancePtr,
		u32	GWOR_config
	)

This function sets the count value for the GWDT_Compare_value_reg0 ,GWDT_Compare_value_reg1 & GWDT_Offset_regs .

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
GWOR_config	specifies the GWDT_Offset_reg count value.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb_WriteReg, and XWT_GWOR_OFFSET.

Referenced by GWdtIntrExample(), and GWdtTbExample().

void XWdtTb_SetGenericWdtWindowTimeOut	(	const XWdtTb *	InstancePtr,
		u32	MilliSeconds
	)

This function sets the count value for the GWDT_Offset_regs .

Parameters

InstancePtr	pointer to the XWdtTb instance to be worked on.
MilliSeconds	GWDT count value in milliseconds.

Returns: None.

Note: This function must be called before Window WDT start/enable or after Window WDT stop/disable.

References XWdtTb_Config::BaseAddr, XWdtTb_Config::Clock, XWdtTb::Config, XWdtTb_WriteReg, XWT_GWOR_OFFSET, XWT_KILO_HZ, and XWT_MAX_TIMEOUT.

void XWdtTb_SetWindowCount	(	const XWdtTb *	InstancePtr,
		u32	FirstWinCount,
		u32	SecondWinCount
	)

This function sets the count value for the first and second window.

Parameters

InstancePtr	is a pointer to the XWdtTb instance to be worked on.
FirstWinCount	specifies the first window count value.
SecondWinCount	specifies the second window count value.

Returns: None.

Note

This function must be called before Window WDT start/enable or after Window WDT stop/disable.

For first window, it is recommended that minimum non-zero value should be 15 or more.
For second window, minimum value should be sufficiently large to complete required AXILite write transactions at system level.
Setting second window count value to zero causes wrong configuration and disables Window WDT feature by clearing WEN bit irrespective of WDP settings.

References XWdtTb_Config::BaseAddr, XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_WriteReg, XWT_FWR_OFFSET, and XWT_SWR_OFFSET.

Referenced by WinWdtIntrExample(), and WinWdtTbExample().

void XWdtTb_Start ( XWdtTb * InstancePtr )

This function starts the legacy or window watchdog timer.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns: None.

Note

For legacy, the Timebase is reset to 0 when the Watchdog Timer is started. The Timebase is always incrementing.
For window, this generates first kick and starts the first window. This step auto clears MWC bit to make address space read only.

References XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_Config::IsPl, XWdtTb::IsReady, and XWdtTb_EnableTimebaseWdt().

Referenced by GWdtIntrExample(), GWdtTbExample(), WdtTbExample(), WdtTbIntrExample(), WinWdtIntrExample(), and WinWdtTbExample().

s32 XWdtTb_Stop ( XWdtTb * InstancePtr )

This function disables the legacy or window watchdog timer.

It is the caller's responsibility to disconnect the interrupt handler of the watchdog timer from the interrupt source, typically an interrupt controller, and disable the interrupt in the interrupt controller.

Parameters

InstancePtr is a pointer to the XWdtTb instance to be worked on.

Returns

XST_SUCCESS if the legacy/window watchdog was stopped successfully.
XST_NO_FEATURE if disable is not supported in legacy watchdog timer.
XST_FAILURE if the window watchdog timer cannot be stopped.

Note

For legacy, the hardware configuration controls this functionality. If it is not allowed by the hardware the failure will be returned and the timer will continue without interruption.

References XWdtTb::Config, XWdtTb::EnableWinMode, XWdtTb_Config::IsPl, XWdtTb::IsReady, XWdtTb_DisableTimebaseWdt(), and XWdtTb_DisableWinWdt().

Referenced by GWdtIntrExample(), GWdtTbExample(), GWdtTbSelfTestExample(), WdtTbExample(), WdtTbIntrExample(), WinWdtIntrExample(), and WinWdtTbExample().

Variable Documentation

XWdtTb_Config XWdtTb_ConfigTable[]

Initial value:

=
{
        {
                XPAR_WDTTB_0_DEVICE_ID,
                XPAR_WDTTB_0_BASEADDR,
                XPAR_WDTTB_0_ENABLE_WINDOW_WDT,
                XPAR_WDTTB_0_MAX_COUNT_WIDTH,
                XPAR_WDTTB_0_SST_COUNT_WIDTH,
                XPAR_WDTTB_0_IS_PL
        }
}

Configuration table.

Referenced by XWdtTb_LookupConfig().

XWdtTb_Config XWdtTb_ConfigTable[]

Configuration table.

Referenced by XWdtTb_LookupConfig().

Data Structures

Macros

Enumerations

Functions

Variables

Register offsets for the WWDT core with Generic & windowing

Register offsets for the AXI Timebase WDT core. Each register is 32

Control/Status Register 0 bits

Control/Status Register 0/1 bits

Master Write Control bits

Enable & Status Register bits

Function Control Register bits

Token feedback register bits

Token response register bits

Generic Watchdog Control and Status Register bits

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation