k60寄存器操作实例档10wdog看门狗测试

1、WDOG 看门狗测试看门狗是一种计数器。当计数的值溢出时会自动复位 MCU。（需要在溢出前“喂狗”，避免复位）看门狗机制可以避免程序跑死（跑死时自动复位）改变看门狗寄存器参数前必须看门狗。freescale kinetis 看门狗步骤是向看门狗的寄存器连续写入 0XC520 和 0xD928.两次写入不能超过 20 个时钟周期。注：程序需要烧至 flash，否则复位后程序丢失。初始化看门狗void WDOG_Init(void)WDOG_UNLOCK = 0xC520;WDOG_UNLOCK = 0xD928;/看门狗寄存器（重新写入前必须）两次写入不能超过 20 个时钟周期WDOG_PRES

2、C = 0x0700;/（7+1）分频WDOG_TOVALH = 0x0110;/看门狗超时时间设置为 3s WDOG_TOVALL = 0x5E90;喂狗void WDOG_Feed(void)WDOG_REFRESH = 0xA602; WDOG_REFRESH = 0xB480;/喂狗关闭和开启看门狗所有代码#include "LED.h"void WDOG_Init(void); void WDOG_Feed(void); void WDOG_Close(void); void WDOG_Open(void);void main(void)DisableInterr

3、upts;void WDOG_Close(void)WDOG_UNLOCK = 0xC520u; WDOG_UNLOCK = 0xD928u;WDOG_STCTRLH &= 0x0001; /关闭看门狗 WDOTEN 0void WDOG_Open(void)WDOG_UNLOCK = 0xC520; WDOG_UNLOCK = 0xD928;WDOG_STCTRLH |= 0x0001;/打开看门狗 WDOTEN 1WDOG_Init(); init_LED(); EnableInterrupts;/初始化看门狗WDOG_Open();/开启看门狗Delay(1500); while

4、(1)LED1(0);LED2(0);LED3(0);LED4(0);/WDOG_Feed();/喂狗void WDOG_Init(void)WDOG_UNLOCK = 0xC520; WDOG_UNLOCK = 0xD928;/看门狗寄存器（重新写入前必须）两次写入不能超过 20 个时钟周期WDOG_PRESC = 0x0700;/（7+1）分频WDOG_TOVALH = 0x0110; WDOG_TOVALL = 0x5E90;/看门狗超时时间设置为 3svoid WDOG_Feed(void)WDOG_REFRESH = 0xA602; WDOG_REFRESH = 0xB480;void WDOG_Close(void)WDOG_UNLOCK = 0xC520u; WDOG_UNLOCK = 0xD928u; WDOG_STCTRLH &= 0x0001;void WDOG_Open(void)/喂狗/关闭看门狗 WDOTEN 0=华丽的代码分割=注释掉“喂狗后”LED 1.5 秒闪烁（初始化LED 为低电平）3 秒看门狗复位喂狗，LED 亮 1.5 后熄灭WDOG_UNL