求助：为什么我的程序进不了中断？

cho822

// Step 0.  Include required header files
         // DSP28_Device.h: device specific definitions #include statements for
         // all of the peripheral .h definition files.
         // DSP28_Example.h is specific for the given example.  
#include "DSP28_Device.h"
#include "math.h"
#include "stdlib.h"
#include "stdio.h"
#define PI 3.1416//π
#define fp 5000  //载波频率5kHZ
#define fc 50 //调制波频率50HZ
#define  M 0.8 //调制比
interrupt void eva_timer1_isr(void);
interrupt void eva_timer2_isr(void);

double cosdata[51]; //storage cos values
double tion[51]; //storage CMPR values
double CMPR[51]; //CMPR values
   Uint16 drag1;
   Uint16 drag2;
   Uint16 TC=0x7530; //TC=30000
   int i;
   int N=0;
   double deltaT;

void main(void)
{
// Step 1. Initialize System Control registers, PLL, WatchDog, Clocks to default state:
    // This function is found in the DSP28_SysCtrl.c file.
InitSysCtrl();
// Step 2. Select GPIO for the device or for the specific application:
    // This function is found in the DSP28_Gpio.c file.
// InitGpio();  // Skip for this test
// Initalize GPIO for this test here
EALLOW;
// Enable PWM pins
    GpioMuxRegs.GPAMUX.all = 0x00FF; // EVA PWM
   
    EDIS;
   
// Step 3. Initialize PIE vector table:
// The PIE vector table is initialized with pointers to shell Interrupt
    // Service Routines (ISR).  The shell routines are found in DSP28_DefaultIsr.c.
// Insert user specific ISR code in the appropriate shell ISR routine in
    // the DSP28_DefaultIsr.c file.
// Disable and clear all CPU interrupts:
DINT;
IER = 0x0000;
IFR = 0x0000;
// Initialize Pie Control Registers To Default State:
        // This function is found in the DSP28_PieCtrl.c file.
InitPieCtrl();
// Initialize the PIE Vector Table To a Known State:
        // This function is found in DSP28_PieVect.c.
// This function populates the PIE vector table with pointers
        // to the shell ISR functions found in DSP28_DefaultIsr.c.
InitPieVectTable();

// Step 4. Initialize all the Device Peripherals to a known state:
// This function is found in DSP28_InitPeripherals.c
   // InitPeripherals();
//initalize  interrupts count values to 0
    drag1=0;
drag2=0;
// EVA Configure T1PWM, T2PWM, PWM1-PWM6
// Step 1  Initalize the timers
// fc=5kHZ,fs=50HZ,fdsp=150MHZ,Tc=30000*Ttimer
// Initalize EVA Timer1
EvaRegs.GPTCONA.all=0;
EvaRegs.T1PR = (int)(TC/2);       // Timer1 period
  EvaRegs.T1CMPR = 0x0000;     // Timer1 compare
EvaRegs.T1CNT = 0x0001;      // Timer1 counter
    // TMODE = continuous up/down
// Timer enable
// Timer compare enable
EvaRegs.T1CON.all = 0x0842;   //Timer1 continuous up/down mode

// Initalize EVA Timer2
EvaRegs.T2PR = (int)(TC/2);       // Timer2 period
EvaRegs.T2CMPR =0x0000;     // Timer2 compare
EvaRegs.T2CNT = 0x0001;      // Timer2 counter
    // TMODE = continuous up/down
// Timer enable
// Timer compare enable
EvaRegs.T2CON.all = 0x0842;   //Timer2 continuous up/down mode
// Step 2  Setup T1PWM and T2PWM
// Drive T1/T2 PWM by compare logic
EvaRegs.GPTCONA.bit.TCOMPOE = 1;
// Polarity of GP Timer 1 Compare = Active low
EvaRegs.GPTCONA.bit.T1PIN = 1;
// Polarity of GP Timer 2 Compare = Active high
EvaRegs.GPTCONA.bit.T2PIN = 2;
// Step 3  Enable compare for PWM1-PWM6
EvaRegs.CMPR1 = (int)(TC/2);
EvaRegs.CMPR2 = (int)(TC/2);
EvaRegs.CMPR3 = (int)(TC/2);
   
    // Compare action control.  Action that takes place
    // on a cmpare event
    // output pin 1 CMPR1 - active high
    // output pin 2 CMPR1 - active low
    // output pin 3 CMPR2 - active high
    // output pin 4 CMPR2 - active low
    // output pin 5 CMPR3 - active high
    // output pin 6 CMPR3 - active low
    EvaRegs.ACTRA.all = 0x0666;
EvaRegs.DBTCONA.all = 0x0000; // deadband=1.6us
    EvaRegs.COMCONA.all = 0xA600;//使能比较，下溢重载
    EvaRegs.EVAIMRA.bit.T1PINT=1;//使能通用定时器周期中断
   EvaRegs.EVAIFRA.bit.T1PINT=1;//clear interrupt
   EvaRegs.EVAIMRB.bit.T2PINT=0;//disable Timer2 周期中断
   EvaRegs.EVAIFRB.bit.T2PINT=1;//clear interrupt
   EALLOW;
   PieVectTable.T1PINT=&eva_timer1_isr;
   PieVectTable.T2PINT=&eva_timer2_isr;
   EDIS;
   PieCtrlRegs.PIEIFR2.bit.INTx4=1;
   PieCtrlRegs.PIEIER3.bit.INTx1=1;
   
   IER|=(M_INT2|M_INT3);
   EINT;//enable globl interrupts
   ERTM;
   

// storage CMPR values
    N=fp/(2*fc);
deltaT=0.0002;
    for(i=0;i<N+1;i++)
    cosdata=cos(i*PI/N);
for(i=0;i<N;i++)
{
tion[i+1]=cosdata-cosdata[i+1];
tion[i+1]=fabs(tion[i+1]);
tion[i+1]=M*tion[i+1];
tion[i+1]=tion[i+1]/2;
tion[i+1]=tion[i+1]/PI;
tion[i+1]=tion[i+1]/fc;
tion[i+1]=-tion[i+1];
tion[i+1]=tion[i+1]+(deltaT);
tion[i+1]=0.5*tion[i+1];
CMPR[i+1]=tion[i+1]*150000000;
//    tion=150000000000/2*[1/fp-M/(2*PI*fc)*(cosdata-cosdata[i+1])]；
    }

    for(;;);

}  
    interrupt void eva_timer1_isr(void)
{
  drag1++;
  if(drag1<51)
  {
  EvaRegs.CMPR1=(int)CMPR[drag1];
     EvaRegs.EVAIFRA.bit.T1PINT=1;
  }
  else
  {
  EvaRegs.CMPR1=(int)(TC/2);
  drag1=0;
  EvaRegs.EVAIFRA.bit.T1PINT=1;
     EvaRegs.EVAIMRB.bit.T2PINT=1;
     EvaRegs.EVAIMRA.bit.T1PINT=0;
  }

}
    interrupt void eva_timer2_isr(void)
{
drag2++;
  if(drag2<51)
  {
  EvaRegs.CMPR2=(int)CMPR[drag2];
  EvaRegs.EVAIFRB.bit.T2PINT=1;
  }
  else
  {
  EvaRegs.CMPR2=(int)(TC/2);
     drag2=0;
     EvaRegs.EVAIFRB.bit.T2PINT=1;
     EvaRegs.EVAIMRB.bit.T2PINT=0;
     EvaRegs.EVAIMRA.bit.T1PINT=1;
  }
}


SPWM的程序，现在是进不了中断，应该还有其他错误，本人初学，希望各位大侠见教了！

dbstarot

如果你是在DSP/BIOS环境下使用的，main函数当中默认是屏蔽中断的，DSP/BIOS自动在main函数后打开全局中断。程序也不允许在main函数有打开中断的语句，main函数只是用来初始化DSP的。所以你的中断不会被响应

cho822

问题已经解决，是 没有加
  PieCtrlRegs.PIECRTL.bit.ENPIE=1;// enable PIE
  PieCtrlRegs.PIEIER2.bit.INTx6=1;//enable INT2 interrupts
  PieCtrlRegs.PIEIER4.bit.INTx6=1;//enable INT4 interrupts