ble-light/components/driver/watchdog/watchdog.c

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#include "watchdog.h"
#include "error.h"
#include "hal_mcu.h"
#include "pwrmgr.h"
#include "clock.h"
#include "OSAL_Timers.h"

static uint8 watchdog_TaskID; 

#define WATCHDOG_1000MS_EVENT    0x0001 
#define WATCHDOG_1000MS_CYCLE    1000 

static void hal_watchdog_feed(void)
{
	AP_WDT->CRR = 0x76;
}

static void watchdog_init(void)
{
	volatile uint32_t a;

	clk_gate_enable(MOD_WDT);

	a = AP_WDT->EOI;
	AP_WDT->CRR = 0x76;
	AP_WDT->TORR = 0x00;
	AP_WDT->CR = 0x1D;

	AP_PCR->RESET2 |= 0x4;
	NVIC_DisableIRQ((IRQn_Type)WDT_IRQ);
	
	osal_start_reload_timer(watchdog_TaskID, WATCHDOG_1000MS_EVENT, WATCHDOG_1000MS_CYCLE);
}	

static void hal_watchdog_wakeup_handler(void)
{
	watchdog_init();
}

static void hal_watchdog_sleep_handler(void)
{
	osal_stop_timerEx(watchdog_TaskID, WATCHDOG_1000MS_EVENT);
}

void Watchdog_Init(uint8 task_id)
{
	watchdog_TaskID = task_id;

	watchdog_init();
	hal_pwrmgr_register(MOD_WDT, hal_watchdog_sleep_handler, hal_watchdog_wakeup_handler);
}

uint16 Watchdog_ProcessEvent(uint8 task_id, uint16 events)
{
	if(events & WATCHDOG_1000MS_EVENT){

		hal_watchdog_feed();
	  return (events ^ WATCHDOG_1000MS_EVENT);
	}
  return 0;
}