91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
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#include "Includes.h"
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typedef unsigned int uint32_t;
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#define __write_hw_reg32(reg,val) ((*reg) = (val))
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#define CPR_CTLAPBCLKEN_GRCTL ((volatile unsigned *)(0x40000000 + 0x070))
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#define CPR_RSTCTL_CTLAPB_SW ((volatile unsigned *)(0x40000000 + 0x100))
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#define CPR_RSTCTL_WDTRST_MASK ((volatile unsigned *)(0x40000000 + 0x114))
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#define WDT_CR ((volatile unsigned *)(0x40004000 + 0x00))
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#define WDT_TORR ((volatile unsigned *)(0x40004000 + 0x04))
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#define WDT_CRR ((volatile unsigned *)(0x40004000 + 0x0C))
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/* ---------------------------------------------------------------------------------------------------
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//看门狗计数器对应的初值
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(0x0)0000：0x FFFF
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(0x1)0001：0x 1FFFF
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(0x2)0010：0x 3FFFF
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(0x3)0011：0x 7FFFF
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(0x4)0100：0x FFFFF
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(0x5)0101：0x 1FFFFF
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(0x6)0110：0x 3FFFFF
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(0x7)0111：0x 7FFFFF
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(0x8)1000：0x FFFFFF----约2S
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(0x9)1001：0x 1FFFFFF----约5S
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(0xA)1010：0x 3FFFFFF----约10S
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(0xB)1011：0x 7FFFFFF----约20S
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(0xC)1100：0x FFFFFFF
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(0xD)1101：0x1FFFFFFF
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(0xE)1110：0x3FFFFFFF
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(0xF)1111：0x7FFFFFFF
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----------------------------------------------------------------------------------------------------*/
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/* ---------------------------------------------------------------------------------------------------
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- 函数名称: xc_wdog_init
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- 函数功能: 初始化看门狗
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- 函数形参：看门狗计数器重装值
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- 创建日期: 2019-04-22
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----------------------------------------------------------------------------------------------------*/
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void xc_wdog_init(uint32_t counter_value)
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{
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__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL,0x10001); //WDT_PCLK 时钟使能
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__write_hw_reg32(CPR_RSTCTL_CTLAPB_SW,0x40000); //WDT 模块软复位
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__write_hw_reg32(CPR_RSTCTL_CTLAPB_SW,0x40004);
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__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
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__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
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__write_hw_reg32(WDT_TORR,counter_value);
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__write_hw_reg32(WDT_CRR,0x76); //重启计数器
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}
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/* ---------------------------------------------------------------------------------------------------
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- 函数名称: xc_wdog_feed
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- 函数功能: 喂看门狗
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- 函数形参：无
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- 创建日期: 2019-04-22
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----------------------------------------------------------------------------------------------------*/
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void xc_wdog_feed(void)
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{
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__write_hw_reg32(WDT_CRR,0x76); //重启计数器
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}
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extern void test_wdog(void)
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{
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uint8_t count=0;
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xc_wdog_init(0xA);
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//__write_hw_reg32(CPR_RSTCTL_WDTRST_MASK,0x3);//屏蔽看门狗复位
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printf("wdog reset\n ");
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while(1)
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{
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printf("WDT_CCVR=%d\n",*WDT_CCVR);
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printf("WDT_STAT=%d\n",*WDT_STAT);
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for(uint32_t i=0; i<0x120000; i++);
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for(uint32_t i=0; i<0x120000; i++);
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for(uint32_t i=0; i<0x120000; i++);
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//不喂狗时可以测试几秒钟看门狗复位
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if(5==count)
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{
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//xc_wdog_init(0xA);
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//xc_wdog_feed();//此处不喂狗会引起系统复位
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count=0;
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}
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else
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{
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count++;
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}
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}
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}
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