pic32mx250128d WDT超时唤醒

我有一些关于WDT的问题。当WDT醒来时，如何让程序在等待指令后面运行？参考纸编号：DS601114GIN第9节。看门狗、死人和上电定时器18：在睡眠模式下造成WDT超时以中断为例，在确定为WDT唤醒之后，可在启动代码中使用来自中断指令的返回（ReFiE）。这将导致代码执行之后的操作码继续执行，将指令设为省电模式（示例示例9-2）。我使用示例9-2一些代码，但没有成功；如果（（RCON＆AMP；0x18）＝0x18）{//WDT导致休眠易失性唤醒（“ErET”）“”，我的问题是，如何让程序从WDT唤醒时从等待指令后面跑出来？



      以下为原文

    I have some questions about the WDT.
How to let the program run from behind the WAIT instruction when from WDT wake up?

reference paper number: DS60001114G
in Section 9. Watchdog, Deadman, and Power-up Timers
page 18:

To cause a WDT time-out in Sleep mode to act likean interrupt, a return from interrupt instruction(RETFIE) may be used in the start-up code after the event was determined to be a WDT wake-up. This will cause code execution to continue with the opcode following the WAIT instruction that put the deviceinto the Power-Saving mode (seeExample 9-2).

i used Example 9-2  some code ,But there is no success;
if (( RCON & 0x18 ) == 0x18)
{
// The WDT caused a wake from sleep
asm volatile ( “eret” ); // return from interrupt
}


LED_InitTest();
// Unlock the OSCCON register
    SYSKEY = 0x12345678; //write invalid key to force lock
    SYSKEY = 0xAA996655; //write Key1 to SYSKEY
    SYSKEY = 0x556699AA; //write Key2 to SYSKEY
    // OSCCON is now unlocked
    OSCCONSET = 0x10; // set power save mode to Sleep
    // Alternate relock code in ‘C’
    SYSKEY = 0x33333333;
    // OSCCON is relocked
    WDTCONSET = 0x8000; // Enable WDT
while(1)
{

    WDTCONSET = 0x01; // service the WDT
    // In certain devices, software must write a 0x5743
    // to WDTCON<31:16> using a single 16-bit write
    tmp = RCON; // Perform a dummy read before WAIT instruction
    //asm volatile ( “wait” ); // put device into selected power-saving mode
    __asm__ __volatile__ ("wait");
    // code execution will resume here after wake
    LED_WDT_Wakeup();
}
so,my question ,How to let the program run from behind the WAIT instruction when from WDT wake up?