px_wwdg.h : System Window Watchdog module

Description

This module is used to initialise the WWDG peripheral.

File(s):

• arch/arm/stm32/inc/px_wwdg.h
• arch/arm/stm32/src/px_wwdg.c

Enumerations
enum	px_wwdg_prescaler_t { PX_WWDG_PRESCALER_1 = 0 , PX_WWDG_PRESCALER_2 = 1 , PX_WWDG_PRESCALER_4 = 2 , PX_WWDG_PRESCALER_8 = 3 }
	Window Watchdog clock prescaler (PCLK / 4096 clock source) More...

Functions
void	px_wwdg_init (px_wwdg_prescaler_t prescaler, uint8_t counter, uint8_t window)
	Initialise System Window Watchdog. More...
void	px_wwdg_reload_counter (void)
	Reload watchdog counter, a.k.a. More...
void	px_wwdg_halt (void)
	Halt watchdog by disabling peripheral clock. More...
void	px_wwdg_resume (void)
	Resume watchdog by enabling peripheral clock. More...
void	px_wwdg_dbg_report (void)
	Report state saved by early warning interrupt in .noinit variables. More...

Enumeration Type Documentation

px_wwdg_prescaler_t

enum px_wwdg_prescaler_t

Window Watchdog clock prescaler (PCLK / 4096 clock source)

Enumerator
PX_WWDG_PRESCALER_1	Clock = (PCLK / 4096) / 1.
PX_WWDG_PRESCALER_2	Clock = (PCLK / 4096) / 2.
PX_WWDG_PRESCALER_4	Clock = (PCLK / 4096) / 4.
PX_WWDG_PRESCALER_8	Clock = (PCLK / 4096) / 8.

Definition at line 46 of file px_wwdg.h.

Function Documentation

px_wwdg_init()

void px_wwdg_init	(	px_wwdg_prescaler_t	prescaler,
		uint8_t	counter,
		uint8_t	window
	)

Initialise System Window Watchdog.

Parameters

prescaler	Clock prescaler. See px_wwdg_prescaler_t
counter	Reload counter value (max 0x7f)
window	Reload window (0 if not used; max 0x7f)

Definition at line 118 of file px_wwdg.c.

px_wwdg_reload_counter()

void px_wwdg_reload_counter

(

void

)

Reload watchdog counter, a.k.a.

"patting the dog"

Definition at line 174 of file px_wwdg.c.

px_wwdg_halt()

void px_wwdg_halt

(

void

)

Halt watchdog by disabling peripheral clock.

Definition at line 187 of file px_wwdg.c.

px_wwdg_resume()

void px_wwdg_resume

(

void

)

Resume watchdog by enabling peripheral clock.

Definition at line 192 of file px_wwdg.c.

px_wwdg_dbg_report()

void px_wwdg_dbg_report

(

void

)

Report state saved by early warning interrupt in .noinit variables.

Definition at line 197 of file px_wwdg.c.