1.运行程序后，进入无限循环for函数之后就跑不出来了，没有复位。
2.在for函数假如长延时，程序就不知道跑到哪了，反正就是没复位。
#include "F28x_Project.h" // Device Headerfile and Examples Include File
// Prototype statements for functions found within this file.
//__interrupt void wakeint_isr(void);
//void ServiceDog(void);
// Global variables for this example
Uint32 WakeCount;
Uint32 LoopCount;
void main(void)
{
asm (" ESTOP0");
// unsigned long delay;
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
InitSysCtrl();
asm (" ESTOP0");
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//EALLOW; // This is needed to write to EALLOW protected registers
//PieVectTable.WAKE_INT = &wakeint_isr;
//EDIS; // This is needed to disable write to EALLOW protected registers
// Step 4. User specific code, enable interrupts:
// Clear the counters
WakeCount = 0; // Count interrupts
LoopCount = 0; // Count times through idle loop
// Connect the watchdog to the WAKEINT interrupt of the PIE
// Write to the whole SCSR register to avoid clearing WDOVERRIDE bit
EALLOW;
WdRegs.SCSR.all = 0x00;
EDIS;
// Enable WAKEINT in the PIE: Group 1 interrupt 8
// Enable INT1 which is connected to WAKEINT:
//PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
//PieCtrlRegs.PIEIER1.bit.INTx8 = 1; // Enable PIE Group 1 INT8
//IER |= M_INT1; // Enable CPU INT1
//EINT; // Enable Global Interrupts
// Reset the watchdog counter
ServiceDog();
//EALLOW;
// WdRegs.SCSR.all = 0; //使能了看门狗中断输出，禁止了看门狗复位输出
// EDIS;
// Enable the watchdog
EALLOW;
WdRegs.WDCR.all = 0x0028; //使能看门狗，并且设置看门狗中断周期
EDIS;
// Step 6. IDLE loop. Just sit and loop forever (optional):
for(;;)
{
// LoopCount++;
//DELAY_US(36000); // 设置12毫秒延时，然后喂狗
asm (" ESTOP0");
// LoopCount++;
//ServiceDog(); //喂狗
// asm (" ESTOP0");
// Uncomment ServiceDog to just loop here
// Comment ServiceDog to take the WAKEINT instead
// ServiceDog();
}
}
// Step 7. Insert all local Interrupt Service Routines (ISRs) and functions here:
// If local ISRs are used, reassign vector addresses in vector table as
// shown in Step 5
/*
__interrupt void wakeint_isr(void)
{
WakeCount++;
asm (" ESTOP0");
// EALLOW;
// WdRegs.WDCR.all = 0; //使能看门狗，并且设置看门狗中断周期
// EDIS;
EALLOW;
WdRegs.SCSR.bit.WDENINT=0;
WdRegs.SCSR.bit.WDENINT=1;
//WdRegs.WDCR.bit.WDCHK=0x000;
EDIS;
asm (" ESTOP0");
// Acknowledge this interrupt to get more from group 1
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}