/************************************************************
*           看门狗定时器的寄存器定义
************************************************************/

#define WDTCTL_             0x0120
sfrw    WDTCTL            = WDTCTL_;
#define WDTIS0              0x0001          /*选择WDTCNT的四个输出端之一*/
#define WDTIS1              0x0002          /*选择WDTCNT的四个输出端之一*/
#define WDTSSEL             0x0004          /*选择WDTCNT的时钟源*/
#define WDTCNTCL            0x0008          /*清除WDTCNT端: 为1时 从0开始计数*/  
#define WDTTMSEL            0x0010          /*选择模式  0: 看门狗模式; 1: 定时器模式*/
#define WDTNMI              0x0020          /*选择NMI/RST 引脚功能 0:为 RST; 1:为NMI*/
#define WDTNMIES            0x0040          /*WDTNMI=1时.选择触发延 0:为上升延 1:为下降延*/
#define WDTHOLD             0x0080          /*停止看门狗定时器工作 0:启动;1:停止*/

#define WDTPW               0x5A00          /* 写密码:高八位*/

/* SMCLK= 1MHz定时器模式 */
#define WDT_MDLY_32         WDTPW+WDTTMSEL+WDTCNTCL                         /* TSMCLK*2POWER15=32ms 复位状态 */
#define WDT_MDLY_8          WDTPW+WDTTMSEL+WDTCNTCL+WDTIS0                  /* TSMCLK*2POWER13=8.192ms     " */
#define WDT_MDLY_0_5        WDTPW+WDTTMSEL+WDTCNTCL+WDTIS1                  /* TSMCLK*2POWER9=0.512ms   " */
#define WDT_MDLY_0_064      WDTPW+WDTTMSEL+WDTCNTCL+WDTIS1+WDTIS0           /* TSMCLK*2POWER6=0.512ms " */
/* ACLK=32.768KHz 定时器模式*/
#define WDT_ADLY_1000       WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL                 /* TACLK*2POWER15=1000ms  " */
#define WDT_ADLY_250        WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS0          /* TACLK*2POWER13=250ms   " */
#define WDT_ADLY_16         WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS1          /* TACLK*2POWER9=16ms    " */
#define WDT_ADLY_1_9        WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS1+WDTIS0   /* TACLK*2POWER6=1.9ms   " */
/* SMCLK=1MHz看门狗模式 */
#define WDT_MRST_32         WDTPW+WDTCNTCL                                  /* TSMCLK*2POWER15=32ms 复位状态  */
#define WDT_MRST_8          WDTPW+WDTCNTCL+WDTIS0                           /* TSMCLK*2POWER13=8.192ms   " */
#define WDT_MRST_0_5        WDTPW+WDTCNTCL+WDTIS1                           /* TSMCLK*2POWER9=0.512ms  " */
#define WDT_MRST_0_064      WDTPW+WDTCNTCL+WDTIS1+WDTIS0                    /* TSMCLK*2POWER6=0.512ms " */
/* ACLK=32KHz看门狗模式 */
#define WDT_ARST_1000       WDTPW+WDTCNTCL+WDTSSEL                          /* TACLK*2POWER15=1000ms  " */
#define WDT_ARST_250        WDTPW+WDTCNTCL+WDTSSEL+WDTIS0                   /* TACLK*2POWER13=250ms   " */
#define WDT_ARST_16         WDTPW+WDTCNTCL+WDTSSEL+WDTIS1                   /* TACLK*2POWER9=16ms    " */
#define WDT_ARST_1_9        WDTPW+WDTCNTCL+WDTSSEL+WDTIS1+WDTIS0            /* TACLK*2POWER6=1.9ms   " */