#include "DSP28_Device.h"
#include "DSP28_Piectrl.h"
//子函數(shù)聲明
interrupt void T1UFINT_IS(void);
void main(void)
{
  //step1:初始化系統(tǒng)控制寄存器,PLL,看門狗,時(shí)鐘等
    InitSysCtrl();            
  EALLOW;       //使能PWM引腳
  GpioMuxRegs.GPAMUX.all=0x00FF;  //EVA PWM1-6引腳
  GpioMuxRegs.GPBMUX.all=0x00FF;   //EVA PWM7-12引腳
  EDIS;
//step3:初始化PIE中斷向量表vector table;
   DINT;
   IER=0x0000;
   IFR=0x0000;  //禁止和清除所有CPU中斷;
  InitPieCtrl() ;      //初始化Pie控制寄存器位默認(rèn)狀態(tài)
  InitPieVectTable();
  
  EvaRegs.T1CNT=0X0000;
  EvaRegs.T1PR=0XFFFF;
   //寄存器賦值
   EvaRegs.EVAIMRA.bit.T1UFINT=1;
  EvaRegs.EVAIFRA.bit.T1UFINT=1; //設(shè)置中斷寄存器
  EvaRegs.T1CON.all=0X084;         //設(shè)置計(jì)數(shù)模式
  EvaRegs.GPTCONA.bit.TCOMPOE=1;    //定時(shí)器1觸發(fā)邏輯獨(dú)立驅(qū)動(dòng)比較輸出,T1CNT的數(shù)開始有變化
  EvaRegs.GPTCONA.bit.T1PIN=2;
  while(1)
  {EvaRegs.T1CMPR=0X3C00;
  EALLOW;
   PieVectTable.T1UFINT=&T1UFINT_IS;
   EDIS;
   PieCtrl.PIEIER2.all=M_INT6;
   IER|=M_INT2;
   EINT;
   ERTM;
   for(;;);
  }
}
  
  void T1UFINT_IS(void)
  {
   EvaRegs.T1CMPR++;
   EvaRegs.EVAIMRA.bit.T1UFINT=1;
   EvaRegs.EVAIFRA.all=BIT9; //清中斷標(biāo)志位
   PieCtrl.PIEACK.all=PIEACK_GROUP2;
  }

  我是想通過下溢中斷進(jìn)中斷子函數(shù)來更新T1CMPR的值,從而改變占空比,可是我這個(gè)進(jìn)了中斷函數(shù)就出不來,占空比不改變,大家?guī)臀铱纯丛撛趺唇鉀Q呢?