#include    "Includes.h"



typedef 	     unsigned int 		uint32_t;
#define     	__write_hw_reg32(reg,val)  ((*reg) = (val))
#define CPR_CTLAPBCLKEN_GRCTL           ((volatile unsigned *)(0x40000000 + 0x070))
#define CPR_RSTCTL_CTLAPB_SW            ((volatile unsigned *)(0x40000000 + 0x100))
#define CPR_RSTCTL_WDTRST_MASK          ((volatile unsigned *)(0x40000000 + 0x114))
#define	WDT_CR							((volatile unsigned *)(0x40004000 + 0x00))
#define	WDT_TORR						((volatile unsigned *)(0x40004000 + 0x04))
#define	WDT_CRR						  	((volatile unsigned *)(0x40004000 + 0x0C))
/* ---------------------------------------------------------------------------------------------------
//看门狗计数器对应的初值
(0x0)0000：0x    FFFF
(0x1)0001：0x   1FFFF
(0x2)0010：0x   3FFFF
(0x3)0011：0x   7FFFF
(0x4)0100：0x   FFFFF
(0x5)0101：0x  1FFFFF
(0x6)0110：0x  3FFFFF
(0x7)0111：0x  7FFFFF
(0x8)1000：0x  FFFFFF----约2S
(0x9)1001：0x 1FFFFFF----约5S
(0xA)1010：0x 3FFFFFF----约10S
(0xB)1011：0x 7FFFFFF----约20S
(0xC)1100：0x FFFFFFF
(0xD)1101：0x1FFFFFFF
(0xE)1110：0x3FFFFFFF
(0xF)1111：0x7FFFFFFF
----------------------------------------------------------------------------------------------------*/
/* ---------------------------------------------------------------------------------------------------
- 函数名称: xc_wdog_init
- 函数功能: 初始化看门狗
- 函数形参：看门狗计数器重装值
- 创建日期: 2019-04-22
----------------------------------------------------------------------------------------------------*/
void xc_wdog_init(uint32_t counter_value) 
{	 
	__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL,0x10001); //WDT_PCLK 时钟使能
    __write_hw_reg32(CPR_RSTCTL_CTLAPB_SW,0x40000);  //WDT 模块软复位    
	__write_hw_reg32(CPR_RSTCTL_CTLAPB_SW,0x40004);
	__write_hw_reg32(CPR_RSTCTL_WDTRST_MASK,0x20);//屏蔽 WDT 引起的 M0 的软复位,不屏蔽 WDT 引起的系统的软复位
	__write_hw_reg32(WDT_CR,0x7);// WDT 使能 ,M0 复位信号，维持4个 pclk 时钟周期,工作模式 0，直接产生复位信号送给 CPR
	__write_hw_reg32(WDT_TORR,counter_value);
	__write_hw_reg32(WDT_CRR,0x76);	//重启计数器	
}
/* ---------------------------------------------------------------------------------------------------
- 函数名称: xc_wdog_feed
- 函数功能: 喂看门狗
- 函数形参：无
- 创建日期: 2019-04-22
----------------------------------------------------------------------------------------------------*/
void xc_wdog_feed(void)
{   
     __write_hw_reg32(WDT_CRR,0x76);	//重启计数器	
}



extern  void   test_wdog(void) 
{
	uint8_t count=0;
	xc_wdog_init(0xA);
	//__write_hw_reg32(CPR_RSTCTL_WDTRST_MASK,0x3);//屏蔽看门狗复位
	printf("wdog reset\n ");
	while(1)
	{
		
	    printf("WDT_CCVR=%d\n",*WDT_CCVR);
		printf("WDT_STAT=%d\n",*WDT_STAT);
		for(uint32_t i=0; i<0x120000; i++);
		for(uint32_t i=0; i<0x120000; i++);
		for(uint32_t i=0; i<0x120000; i++);
		//不喂狗时可以测试几秒钟看门狗复位
		if(5==count) 
		{
			//xc_wdog_init(0xA);
			//xc_wdog_feed();//此处不喂狗会引起系统复位
			count=0;
		}
		else
		{
			count++;
		}
	}
}