Watchdog Timer (WDT)

Modules
	WDT_Registers

Enumerations
enum	mxc_wdt_period_t

Functions
int	MXC_WDT_Init (mxc_wdt_regs_t *wdt)
int	MXC_WDT_Shutdown (mxc_wdt_regs_t *wdt)
void	MXC_WDT_SetIntPeriod (mxc_wdt_regs_t *wdt, mxc_wdt_period_t period)
void	MXC_WDT_SetResetPeriod (mxc_wdt_regs_t *wdt, mxc_wdt_period_t period)
void	MXC_WDT_Enable (mxc_wdt_regs_t *wdt)
void	MXC_WDT_Disable (mxc_wdt_regs_t *wdt)
void	MXC_WDT_EnableInt (mxc_wdt_regs_t *wdt)
void	MXC_WDT_EnableReset (mxc_wdt_regs_t *wdt)
void	MXC_WDT_DisableInt (mxc_wdt_regs_t *wdt)
void	MXC_WDT_DisableReset (mxc_wdt_regs_t *wdt)
void	MXC_WDT_ResetTimer (mxc_wdt_regs_t *wdt)
int	MXC_WDT_GetResetFlag (mxc_wdt_regs_t *wdt)
void	MXC_WDT_ClearResetFlag (mxc_wdt_regs_t *wdt)
int	MXC_WDT_GetIntFlag (mxc_wdt_regs_t *wdt)
void	MXC_WDT_ClearIntFlag (mxc_wdt_regs_t *wdt)

Detailed Description

Enumeration Type Documentation

mxc_wdt_period_t

enum mxc_wdt_period_t

Watchdog period enumeration. Used to configure the period of the watchdog interrupt.

Enumerator
MXC_WDT_PERIOD_2_31	Period 2^31
MXC_WDT_PERIOD_2_30	Period 2^30
MXC_WDT_PERIOD_2_29	Period 2^29
MXC_WDT_PERIOD_2_28	Period 2^28
MXC_WDT_PERIOD_2_27	Period 2^27
MXC_WDT_PERIOD_2_26	Period 2^26
MXC_WDT_PERIOD_2_25	Period 2^25
MXC_WDT_PERIOD_2_24	Period 2^24
MXC_WDT_PERIOD_2_23	Period 2^23
MXC_WDT_PERIOD_2_22	Period 2^22
MXC_WDT_PERIOD_2_21	Period 2^21
MXC_WDT_PERIOD_2_20	Period 2^20
MXC_WDT_PERIOD_2_19	Period 2^19
MXC_WDT_PERIOD_2_18	Period 2^18
MXC_WDT_PERIOD_2_17	Period 2^17
MXC_WDT_PERIOD_2_16	Period 2^16

Function Documentation

MXC_WDT_ClearIntFlag()

void MXC_WDT_ClearIntFlag

(

mxc_wdt_regs_t *

wdt

)

Clears the interrupt flag.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_ClearResetFlag()

void MXC_WDT_ClearResetFlag

(

mxc_wdt_regs_t *

wdt

)

Clears the reset flag.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_Disable()

void MXC_WDT_Disable

(

mxc_wdt_regs_t *

wdt

)

Disable the watchdog timer.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_DisableInt()

void MXC_WDT_DisableInt

(

mxc_wdt_regs_t *

wdt

)

Enable the watchdog interrupt.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_DisableReset()

void MXC_WDT_DisableReset

(

mxc_wdt_regs_t *

wdt

)

Enable the watchdog reset.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_Enable()

void MXC_WDT_Enable

(

mxc_wdt_regs_t *

wdt

)

Enable the watchdog timer.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_EnableInt()

void MXC_WDT_EnableInt

(

mxc_wdt_regs_t *

wdt

)

Enable the watchdog interrupt.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_EnableReset()

void MXC_WDT_EnableReset

(

mxc_wdt_regs_t *

wdt

)

Enable the watchdog reset.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_GetIntFlag()

int MXC_WDT_GetIntFlag

(

mxc_wdt_regs_t *

wdt

)

Get the status of the interrupt flag.

Parameters

wdt	Pointer to watchdog registers.

Returns

1 if the interrupt is pending, 0 otherwise.

MXC_WDT_GetResetFlag()

int MXC_WDT_GetResetFlag

(

mxc_wdt_regs_t *

wdt

)

Get the status of the reset flag.

Parameters

wdt	Pointer to watchdog registers.

Returns

1 if the previous reset was caused by the watchdog, 0 otherwise.

MXC_WDT_Init()

int MXC_WDT_Init

(

mxc_wdt_regs_t *

wdt

)

Initialize the Watchdog Timer.

Note

On default this function enables WDT peripheral clock. if you wish to manage clock and gpio related things in upper level instead of here. Define MSDK_NO_GPIO_CLK_INIT flag in project.mk file. By this flag this function will remove clock and gpio related codes from file.

Parameters

wdt	Pointer to the watchdog registers, has no effect incase of MSDK_NO_GPIO_CLK_INIT has been defined.

Returns

See Error Codes for the list of error codes.

MXC_WDT_ResetTimer()

void MXC_WDT_ResetTimer

(

mxc_wdt_regs_t *

wdt

)

Reset the watchdog timer.

Parameters

wdt	Pointer to watchdog registers.

MXC_WDT_SetIntPeriod()

void MXC_WDT_SetIntPeriod	(	mxc_wdt_regs_t *	wdt,
		mxc_wdt_period_t	period
	)

Set the period of the watchdog interrupt.

Parameters

wdt	Pointer to watchdog registers.
period	Enumeration of the desired watchdog period.

MXC_WDT_SetResetPeriod()

void MXC_WDT_SetResetPeriod	(	mxc_wdt_regs_t *	wdt,
		mxc_wdt_period_t	period
	)

Set the period of the watchdog reset.

Parameters

wdt	Pointer to watchdog registers.
period	Enumeration of the desired watchdog period.

MXC_WDT_Shutdown()

int MXC_WDT_Shutdown

(

mxc_wdt_regs_t *

wdt

)

Shutdown the Watchdog Timer.

Parameters

wdt	Pointer to the watchdog registers

Returns

See Error Codes for the list of error codes.