neorv32_wdt.h File Reference

Watchdog Timer (WDT) HW driver header file. More...

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Functions
int	neorv32_wdt_available (void)
void	neorv32_wdt_setup (uint8_t prsc, uint8_t mode, uint8_t lock)
int	neorv32_wdt_disable (void)
void	neorv32_wdt_reset (void)
int	neorv32_wdt_get_cause (void)
void	neorv32_wdt_force (void)

Detailed Description

Watchdog Timer (WDT) HW driver header file.

Note

These functions should only be used if the WDT unit was synthesized (IO_WDT_EN = true).

Function Documentation

neorv32_wdt_available()

int neorv32_wdt_available

(

void

)

Check if WDT unit was synthesized.

Returns

0 if WDT was not synthesized, 1 if WDT is available.

neorv32_wdt_disable()

int neorv32_wdt_disable

(

void

)

Disable watchdog timer.

Returns

Returns 0 if WDT is really deactivated, -1 otherwise.

neorv32_wdt_force()

void neorv32_wdt_force

(

void

)

Force immediate watchdog action (reset/IRQ).

neorv32_wdt_get_cause()

int neorv32_wdt_get_cause

(

void

)

Get cause of last system reset.

Returns

Cause of last reset (0: system reset - OCD or external, 1: watchdog timeout).

neorv32_wdt_reset()

void neorv32_wdt_reset

(

void

)

Feed watchdog (reset timeout counter).

neorv32_wdt_setup()

void neorv32_wdt_setup	(	uint8_t	prsc,
		uint8_t	mode,
		uint8_t	lock
	)

Configure and enable watchdog timer. The WDT control register bits are listed in NEORV32_WDT_CTRL_enum.

Warning

Once set the watchdog lock can only be removed by an external hardware reset!

Parameters

[in]	prsc	Clock prescaler to select timeout interval. See NEORV32_CLOCK_PRSC_enum.
[in]	mode	Trigger system reset on timeout when 1, trigger interrupt on timeout when 0.
[in]	lock	Control register will be locked when 1 (until next reset).