kinetis内置看门狗，当程序长时间不喂狗时，程序复位执行。下面做一个例子，详述具体步骤：

1、点“文件->新建->bareboard project”出现下面对话框：

为工程起个名字（该示例为k10_wd_pe），点“下一步”，出现：

选择你所用的芯片型号（这里是“PK10X256”）即可。点“下一步”，出现：

“Connetion to be used”中先选我们先前建好的“USBDM K10X256”，点“下一步”，一直点“下一步”直到出现：

选“Processor Export”，点“下一步”，出现：

选实际用到的芯片（我用的是144-pins LQFP），点“完成”，出现：

等待上面对话框消失，一个工程就建好了。

双击“Timer”下的“WatchDog_LDD”添加一个“WatchDog Bean”，如下图：

配置如下图：

Methods”里

点“项目”->“Generate Processor Export Code”如下图：

下面是“ProcessorExpert.c”的“main()”函数代码：

/* Including needed modules to compile this module/procedure */
#include "Cpu.h"
#include "Events.h"
#include "WDog1.h"
/* Including shared modules, which are used for whole project */
#include "PE_Types.h"
#include "PE_Error.h"
#include "PE_Const.h"
#include "IO_Map.h"

/* User includes (#include below this line is not maintained by Processor Expert) */
LDD_TDeviceData *MyWDog1Ptr;
LDD_TError Error;

void main(void)
{
  /* Write your local variable definition here */

  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
  PE_low_level_init();
  /*** End of Processor Expert internal initialization.                    ***/

  /* Write your code here */
  /* For example: for(;;) { } */
  MyWDog1Ptr = WDog1_Init(
          (LDD_TUserData *)NULL
          );
  while(1)
  {
      /* User actions, no longer than 2 seconds */
      Error = WDog1_Clear(MyWDog1Ptr);                 /* Clear watchdog timer */
  }
  /*** Don't write any code pass this line, or it will be deleted during code generation. ***/
  /*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/
  for(;;){}
  /*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

/* END ProcessorExpert */