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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

 

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.

Referenced by navauto_mov_explorer_rec().

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
optStructure 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
optStructure for settings of WDT.
Return values
<0The WatchDog Timer is disabled.
>=0Active 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().