#include "watchdog.h"
#include "string.h"
#include "ac780x.h"
#include "ac780x_wdg.h"
#include "ac780x_wdg_reg.h"
#include "ac780x_gpio.h"
//#include "wdg_sample.h"

#define WDG_Timeout(n)   (n * APB_BUS_FREQ)
#define WDG_CLK(n)     (APB_BUS_FREQ * n -1)
 

/**
 * WDGCallback
 *
 * @param[in]  wparam: reserved
 * @param[in]  lparam: reserved
 * @return 0: success, other: error
 *
 * @brief Watchdog IRQ callback function
 * 中断服务仅有128个总线时钟（时间极短），然后MCU会被复位
 */
void WDGCallback(void *device, uint32_t wpara, uint32_t lpara)
{
    
	return;
}

void Watchdog_Init(void)
{
	#ifdef WATCHDOG_ENABLE
		uint32_t tmpTimeoutValue = WDG_CLK(WATCHDOG_TIMEOUT);            // （119999999+1）/24000000 = 5s(时钟为48M)
		WDG_ConfigType WDGConfig;
		
		memset(&WDGConfig,0,sizeof(WDGConfig));
		
		WDGConfig.clockSource = WDG_CLOCK_APB;                //0 is 24MHz clk source
    WDGConfig.WDGEn = ENABLE;
    WDGConfig.interruptEn = ENABLE;           //使能中断，延迟128个总线时钟后复位，可在128总线时钟内执行中断例程
	                                                 //若需要超时立即复位，禁能中断即可
    WDGConfig.prescalerEn = DISABLE;          //0:disable 256 pre, 1:enable 256 pre
    WDGConfig.updateEn = ENABLE;       		 //if update is 0,can't do any setting
    WDGConfig.windowEn = DISABLE;          //window mode watchdog
    WDGConfig.timeoutValue = tmpTimeoutValue;            //time = pre*timeout/clk source
    WDGConfig.windowValue = NULL;
    WDGConfig.callBack = WDGCallback;              //设置中断回调
    WDG_Init(&WDGConfig);
	
		WDG_Feed(); 
	#endif 
}


void Watchdog_Feed(void)
{
	
	#ifdef WATCHDOG_ENABLE
		WDG_Feed();                                  //刷新看门狗	
	#endif 
}