不知道怎么回事，自己的28027Luanchpad    加载TI  epwm例程中断都进不去了（以前调试的时候都可以），自己在网上找了个简单的程序，感觉没有错误，下载进去后，程序一直进不了中断；跪求大神指导



#include "DSP28x_Project.h"     // Device Headerfile and Examples Include File

/*******************************************************************************

全局变量

*******************************************************************************/

volatile Uint32 Num;



int SinceTable[200] = { 0, 23, 47, 70, 94, 117, 141, 164, 187, 211, 234, 257,

                281, 304, 327, 350, 373, 395, 418, 441, 463, 485, 508, 530, 552, 574,

                595, 617, 638, 659, 680, 701, 722, 743, 763, 783, 803, 823, 843, 862,

                881, 900, 919, 937, 956, 974, 991, 1009, 1026, 1043, 1060, 1077, 1093,

                1109, 1125, 1140, 1155, 1170, 1185, 1199, 1213, 1227, 1240, 1253, 1266,

                1278, 1291, 1302, 1314, 1325, 1336, 1347, 1357, 1367, 1376, 1385, 1394,

                1403, 1411, 1419, 1426, 1433, 1440, 1446, 1452, 1458, 1463, 1468, 1473,

                1477, 1481, 1485, 1488, 1490, 1493, 1495, 1497, 1498, 1499, 1499, 1499,

                1499, 1499, 1498, 1497, 1495, 1493, 1490, 1488, 1485, 1481, 1477, 1473,

                1468, 1463, 1458, 1452, 1446, 1440, 1433, 1426, 1419, 1411, 1403, 1394,

                1385, 1376, 1367, 1357, 1347, 1336, 1325, 1314, 1302, 1291, 1278, 1266,

                1253, 1240, 1227, 1213, 1199, 1185, 1170, 1155, 1140, 1125, 1109, 1093,

                1077, 1060, 1043, 1026, 1009, 991, 974, 956, 937, 919, 900, 881, 862,

                843, 823, 803, 783, 763, 743, 722, 701, 680, 659, 638, 617, 595, 574,

                552, 530, 508, 485, 463, 441, 418, 395, 373, 350, 327, 304, 281, 257,

                234, 211, 188, 164, 141, 117, 94, 70, 47, 23, };





/*******************************************************************************

函数声明

*******************************************************************************/

void EPWM_init();

interrupt void epwm1_timer_isr(void);

/*

* main.c

*/

int main(void)

{

        // Step 1. Initialize System Control:

        // PLL, WatchDog, enable Peripheral Clocks

        // This example function is found in the DSP2802x_SysCtrl.c file.

        InitSysCtrl();

        DINT;



        InitPieCtrl();



        // Disable CPU interrupts and clear all CPU interrupt flags:

        IER = 0x0000;

        IFR = 0x0000;



        InitPieVectTable();



        EALLOW;

        PieVectTable.EPWM1_INT = &epwm1_timer_isr;

        EDIS;



        EALLOW;



        GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1;

        GpioCtrlRegs.GPAPUD.bit.GPIO1 = 1;



        GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1;

        GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1;//设置GPIO0/GPIO1为EPWM1A/EPWM1B



        EDIS;



        EALLOW;

        SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;

        EDIS;

        EPWM_init();

        EALLOW;

        SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;

        EDIS;



        IER|=M_INT3;

        PieCtrlRegs.PIEIER3.bit.INTx1 = 1;

        EINT;

        ERTM;

    Num = 0;

        while(1);

}

/************************************************************************************************



***

**Function:    ** void EPWM_init(void)

**Description: ** 初始化EPWM模块

**Input:       ** Null

**Output:      ** Null

**Others:      ** Null

*************************************************************************************************



**/

void EPWM_init()

{

        EPwm1Regs.TBPRD = 1500;                         // Set timer period

        EPwm1Regs.TBPHS.half.TBPHS = 0x0000;            // Phase is 0

        EPwm1Regs.TBCTR = 0x0000;                       // Clear counter



// Setup TBCLK

        EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up/down

        EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;        // Disable phase loading

        EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT

        EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;         //TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

                                                      //TBCLK = SYSCLKOUT

// Load registers

        EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;    // Load registers every ZERO

        EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;



// Setup compare

        EPwm1Regs.CMPA.half.CMPA = 1000;



// Set actions

        EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR;

        EPwm1Regs.AQCTLA.bit.ZRO = AQ_SET;

        EPwm1Regs.AQCTLA.bit.CAD = AQ_SET;



//set interrupt

    EPwm1Regs.ETSEL.bit.INTSEL =ET_CTR_ZERO;      // 计数值等于0时产生中断

    EPwm1Regs.ETSEL.bit.INTEN = 1;                  // 使能中断

    EPwm1Regs.ETPS.bit.INTPRD = ET_1ST;             // 第一次时产生中断



}

interrupt void epwm1_timer_isr(void)

{

        int count = 0;

        count++;

  if (Num > 200)

  {

                Num = 0;

  }

        EPwm1Regs.CMPA.half.CMPA = SinceTable[Num];

        Num++;



        EPwm1Regs.ETCLR.bit.INT = 1;

        PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;

}




此帖出自小平头技术问答