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28335 TIMER0中断进不去 IFR=0

miao young
Prodigy 150 points

    28335 TIMER0中断进不去 
    配置应该没错 ，同样的程序， 以前是偶尔进不去  现在是经常进不去  
    程序里相应的DINT之后都EINT了，每次都能读到 CpuTimer0Regs.TCR.bit.TIF = 1;（即发生timer0定时器外设级中断）；PIE的相应位的使能和标志位都是1；CPU的IER也是1，但是IFR却是0，IFR应该是1才对吧。而且ram调试，手动让IFR=1之后，就能产生TIMER0中断了。
   同样的程序偶尔能进，偶尔又不能进TIMER0，而且ram调试进去中断之后，不断电，LOAD第二次，就进不去中断了，和解？

  • 0
    TI__Genius 11005 points

    中断退出时有下面语句吗，如果没有请加上。如果有，请将timer0和PIE初始化代码贴上来。

    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

  • 0 回复 Huihuang Chen
    Prodigy 150 points

    有的
    cpu0初始化：
    void InitCpuTimers(void)
    {
    // CPU Timer 0
    // Initialize address pointers to respective timer registers:
    CpuTimer0.RegsAddr = &CpuTimer0Regs;
    // Initialize timer period to maximum:
    CpuTimer0Regs.PRD.all = 15000;
    // Initialize pre-scale counter to divide by 1 (SYSCLKOUT):
    CpuTimer0Regs.TPR.all = 0;
    CpuTimer0Regs.TPRH.all = 0;
    // Make sure timer is stopped:
    CpuTimer0Regs.TCR.bit.TSS = 1;
    CpuTimer0Regs.TCR.bit.TIF = 0;
    CpuTimer0Regs.TCR.bit.TIE = 1;
    CpuTimer0Regs.TCR.bit.FREE= 0;
    CpuTimer0Regs.TCR.bit.SOFT= 0;
    // Reload all counter register with period value:
    CpuTimer0Regs.TCR.bit.TRB = 1;
    // Reset interrupt counters:
    CpuTimer0.InterruptCount = 0;
    }
    主程序中main（）中
    PieVectTable.TINT0 = &Timer0_isr;
    PieCtrlRegs.PIEIER1.bit.INTx7 = 1; //cputime0
    PieCtrlRegs.PIECTRL.bit.ENPIE = 1;
    IER = 0x0000;
    IFR = 0x0000;
    IER |= M_INT1 | M_INT3 | M_INT4 | M_INT5 | M_INT9 | M_INT10 | M_INT11;
    EINT;
    ERTM;


    TIMER0中断程序中有PieCtrlRegs.PIEACK.bit.ACK1 = 1;

  • 0 回复 miao young
    TI__Genius 11005 points

    建议楼主用这条语句是一下：PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;

    是否有开其它中断？

    有的话，屏蔽其它中断试一下。