WDT - Watchdog Timer

Driver for the Watchdog Timer.

Provides functions for selecting the mode, setting the time-out period, and enabling/disabling the Watchdog Timer.

Modules
	Related Project(s)
	In this section you can find all the projects related to the WDT - Watchdog Timer.

Data Structures
struct	wdt_opt_t
	WDT startup options. More...

Macros
#define	AVR32_SCIF_OSC32_FREQUENCY   32768
#define	WDT_BASIC_MODE   0x0
	WDT Basic Mode. More...
#define	WDT_CLOCK_SOURCE_SELECT_OSC32K   0x1
	WDT Clock Source Select 32K Oscillator. More...
#define	WDT_CLOCK_SOURCE_SELECT_RCSYS   0x0
	WDT Clock Source Select RCOSC. More...
#define	WDT_WINDOW_MODE   0x1
	WDT Window Mode. More...

Functions
void	wdt_clear (void)
	Clears the WatchDog Timer. More...
void	wdt_disable (void)
	Disables the WatchDog Timer. More...
uint64_t	wdt_enable (wdt_opt_t *opt)
	Enables the WatchDog Timer with the us_timeout_period time-out period saturated to the supported range and rounded up to the nearest supported greater time-out period. More...
int64_t	wdt_get_us_timeout_period (wdt_opt_t *opt)
	Gets the time-out period of the WatchDog Timer in microseconds. More...
void	wdt_reenable (void)
	Re-enables the WatchDog Timer with the last time-out period configured. More...
void	wdt_reset_mcu (void)
	Resets the MCU with the WatchDog Timer as fast as possible. More...

#define AVR32_SCIF_OSC32_FREQUENCY   32768

#define WDT_BASIC_MODE   0x0

WDT Basic Mode.

#define WDT_CLOCK_SOURCE_SELECT_OSC32K   0x1

WDT Clock Source Select 32K Oscillator.

#define WDT_CLOCK_SOURCE_SELECT_RCSYS   0x0

WDT Clock Source Select RCOSC.

#define WDT_WINDOW_MODE   0x1

WDT Window Mode.

void wdt_clear

(

void

)

Clears the WatchDog Timer.

void wdt_disable

(

void

)

Disables the WatchDog Timer.

References wdt_set_ctrl().

uint64_t wdt_enable

(

wdt_opt_t *

opt

)

Enables the WatchDog Timer with the us_timeout_period time-out period saturated to the supported range and rounded up to the nearest supported greater time-out period.

Parameters

opt	Structure for settings of WDT.

Returns

Actually configured time-out period in microseconds.

References clz, Max, MAX_US_TIMEOUT_PERIOD, Min, MIN_US_TIMEOUT_PERIOD, wdt_opt_t::us_timeout_period, wdt_get_us_timeout_period(), and wdt_set_ctrl().

Referenced by wdt_reset_mcu(), and wdt_scheduler().

int64_t wdt_get_us_timeout_period

(

wdt_opt_t *

opt

)

Gets the time-out period of the WatchDog Timer in microseconds.

Parameters

opt	Structure for settings of WDT.

Return values

<0	The WatchDog Timer is disabled.
>=0	Active time-out period of the WatchDog Timer in microseconds.

Referenced by wdt_enable().

void wdt_reenable

(

void

)

Re-enables the WatchDog Timer with the last time-out period configured.

References wdt_set_ctrl().

Referenced by wdt_scheduler().

void wdt_reset_mcu

(

void

)

Resets the MCU with the WatchDog Timer as fast as possible.

References cpu_irq_disable, opt, wdt_opt_t::us_timeout_period, and wdt_enable().