CPU定時(shí)器0模塊初始化：

#include "DSP28_Device.h"

struct CPUTIMER_VARS CpuTimer0; //對(duì)用戶(hù)開(kāi)放的CPU定時(shí)器只有CpuTimer0宣增，CpuTimer1
struct CPUTIMER_VARS CpuTimer1; //和CpuTimer2被保留用作實(shí)習(xí)操作系統(tǒng)OS（例如DSP
struct CPUTIMER_VARS CpuTimer2; //BIOS）

//初始化CpuTimer0坛吁。
void InitCpuTimers(void)
{
    CpuTimer0.RegsAddr = &CpuTimer0Regs; //使得CpuTimer0.RegsAddr 指向定時(shí)器寄存器
    
    CpuTimer0Regs.PRD.all  = 0xFFFFFFFF; //初始化CpuTimer0的周期寄存器

    CpuTimer0Regs.TPR.all  = 0;          //初始化定時(shí)器預(yù)定標(biāo)計(jì)數(shù)器
    CpuTimer0Regs.TPRH.all = 0;
    
    CpuTimer0Regs.TCR.bit.TSS = 1;       //停止定時(shí)器       

    CpuTimer0Regs.TCR.bit.TRB = 1;       //將周期寄存器PRD中的值裝入計(jì)數(shù)器寄存器TIM中           
    
    CpuTimer0.InterruptCount = 0;        //初始化定時(shí)器中斷計(jì)數(shù)器
}   
    
//Timer（指定的定時(shí)器）久锥，F(xiàn)req喉刘，Period
void ConfigCpuTimer(struct CPUTIMER_VARS *Timer, float Freq, float Period)
{
    Uint32  temp;
    
    Timer->CPUFreqInMHz = Freq;
    Timer->PeriodInUSec = Period;
    temp = (long) (Freq * Period);
    Timer->RegsAddr->PRD.all = temp;  //給定時(shí)器周期寄存器賦值

    Timer->RegsAddr->TPR.all  = 0;    //給定時(shí)器預(yù)定標(biāo)寄存器賦值
    Timer->RegsAddr->TPRH.all  = 0;
    
    // 初始化定時(shí)器控制寄存器:
    Timer->RegsAddr->TCR.bit.TIF=1;   //清除中斷標(biāo)志位
    Timer->RegsAddr->TCR.bit.TSS = 1; //停止定時(shí)器 
    Timer->RegsAddr->TCR.bit.TRB = 1; //定時(shí)器重裝楞抡，將定時(shí)器周期寄存器的值裝入定時(shí)器計(jì)數(shù)器寄存器
    Timer->RegsAddr->TCR.bit.SOFT = 1;
    Timer->RegsAddr->TCR.bit.FREE = 1;     
    Timer->RegsAddr->TCR.bit.TIE = 1; //使能定時(shí)器中斷
    
    Timer->InterruptCount = 0;        //初始化定時(shí)器中斷計(jì)數(shù)器
}

主函數(shù)模塊：

#include "DSP28_Device.h"

void main()
{
    InitSysCtrl();
    DINT;
    IER = 0x0000;
    IFR = 0x0000;
    InitPieCtrl();
    InitPieVectTable();
    InitPeripherals();
    InitGpio();
    PieCtrl.PIEIER1.bit.INTx7 = 1;
    IER |= M_INT1;
    EINT;
    ERTM;
    ConfigCpuTimer(&CpuTimer0, 150, 1000000);
    StartCpuTimer0();
    for(;;)
    {
    }
}

CPU定時(shí)器0周期中斷函數(shù)：

interrupt void  TINT0_ISR(void)      // CPU-Timer0中斷函數(shù)
{
   CpuTimer0.InterruptCount++;
   
   if(CpuTimer0.InterruptCount==1)  
   {
      GpioDataRegs.GPFCLEAR.bit.GPIOF14=1;  //XF引腳低電平，D3亮
   }
   
   if(CpuTimer0.InterruptCount==2)
   {
      GpioDataRegs.GPFSET.bit.GPIOF14=1;    //XF引腳高電平安拟，D3滅
      CpuTimer0.InterruptCount=0;
   }
   
   CpuTimer0Regs.TCR.bit.TIF=1;  //清除定時(shí)器中斷標(biāo)志位
   PieCtrl.PIEACK.bit.ACK1=1;    //響應(yīng)同組其他中斷
   EINT;  //開(kāi)全局中斷
}