cqaxgh 发表于 2009-8-18 20:55:27

T2CINT中断进不去,请教高手~~

// Initialize System Control registers, PLL, WatchDog, Clocks to default state:
// This function is found in the DSP281x_SysCtrl.c file.
InitSysCtrl();

// HISPCP prescale register settings, normally it will be set to default values
    EALLOW;   // This is needed to write to EALLOW protected registers
    SysCtrlRegs.HISPCP.all = 0x0000;   // SYSCLKOUT/1
    EDIS;   // This is needed to disable write to EALLOW protected registers

// Disable and clear all CPU interrupts:
    DINT;
    IER = 0x0000;
    IFR = 0x0000;

// Initialize Pie Control Registers To Default State
// This function is found in the DSP281x_PieCtrl.c file.
    InitPieCtrl();

// Initialize the PIE Vector Table To a Known State:
// This function is found in DSP281x_PieVect.c.
// This function populates the PIE vector table with pointers
// to the shell ISR functions found in DSP281x_DefaultIsr.c.
    InitPieVectTable();      
      
// User specific functions, Reassign vectors (optional), Enable Interrupts:
      
// Initialize EVA Timer 1:
// Setup Timer 1 Registers (EV A)
    EnableFlag=TRUE;
   // Waiting for enable flag set
   while (EnableFlag==FALSE)
    {
      BackTicker++;
    }
   

//Enable Comper interrupt bits for GP timer 2
    EvaRegs.EVAIMRB.bit.T2CINT=1;
    EvaRegs.EVAIFRB.bit.T2CINT=1;

// Reassign ISRs.
      // Reassign the PIE vector for T1UFINT and T2PINT to point to a different
      // ISR then the shell routine found in DSP281x_DefaultIsr.c.
      // This is done if the user does not want to use the shell ISR routine
      // but instead wants to use their own ISR.
      
      EALLOW;      // This is needed to write to EALLOW protected registers
      PieVectTable.T2CINT = &HXISR;
      EDIS;   // This is needed to disable write to EALLOW protected registers

// Enable PIE group 3 interrupt 1 for T2CINT
    PieCtrlRegs.PIEIER3.all=M_INT2;

// Enable CPU INT2 for T1UFINT and INT3 for T2CINT:
    IER |=M_INT3;
请问高手,我这个中断程序为什么,T2的比较中断进不去啊?谢谢~~

tiancaigao7 发表于 2009-8-19 08:32:23

没有看到你启动EV的定时器呀?你参考一下2812的例程里面有和这个一样的例子。

cqaxgh 发表于 2009-8-19 16:00:43

我不启动EV用他的周期中断,下溢中断都是可以连续进的啊?
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