Watchdog

Examples

#include "abov/hal/wdt.h"
#include "abov/irq.h"
#include "abov/delay.h"

#define OPTIONAL

int main(void)
{
	wdt_enable();
#if defined(OPTIONAL)
	wdt_set_clock_source(CLK_LSI);
#endif
#if defined(ENABLE_WATCHDOG_INTERRUPT)
	wdt_set_interrupt(true);
	irq_enable(IRQ_WDT);
#endif
	wdt_set_reload_ms(1000);
	wdt_start();

	for (int i = 0; i < 10; i++) {
		wdt_feed();
		udelay(500000);
	}

	while (1) {
		/* waiting for watchdog event */
	}

	return 0;
}

#if defined(ENABLE_WATCHDOG_INTERRUPT)
void ISR_WDT(void)
{
	wdt_feed();
}
#endif

HAL

Functions

void wdt_enable(void)

void wdt_disable(void)

uint32_t wdt_get_clock_frequency(void)

LL

Functions

void wdt_reset(void)

Reset WDT unit.

This function makes WDT unit the reset state.

uint32_t wdt_get_count(void)

Get the current watchdog count

void wdt_set_prescaler(uint32_t div_factor)

uint32_t wdt_get_prescaler(void)

void wdt_set_reload_ms(uint32_t period_ms)

void wdt_set_reload(uint32_t timeout)

uint32_t wdt_get_reload(void)

void wdt_feed(void)

void wdt_start(void)

void wdt_stop(void)

void wdt_set_debug_stop_mode(bool enable)

Stop watchdog counter clock when core is halted.

Parameters

enable – [in] counter clock stopped when true. Otherwise continues

void wdt_set_interrupt(bool enable)

Set watchdog interrupt.

The default behavior is to reset the system if not interrupt set

Parameters

enable – [in] enables interrupt when true. disables when false

bool wdt_is_event_raised(void)

void wdt_set_clock_source(clk_source_t clk)

clk_source_t wdt_get_clock_source(void)