TMS320F28027之CPU定时器

这个太简单了，就五个寄存器，看一下就行了

贴代码记录之：

/*********************************************
    标题：TIMER_test.c
    软件平台：CCS v5.2
    硬件平台：C2000 LaunchPad
    主频：60M

      描述：练习定时器

      基于2802x C/C++ Header Files V1.26


    author：小船
    data：2012-09-26

    As supplied, this project is configured for "boot to SARAM"
    operation.  The 2802x Boot Mode table is shown below.

    $Boot_Table
    While an emulator is connected to your device, the TRSTn pin = 1,
    which sets the device into EMU_BOOT boot mode. In this mode, the
    peripheral boot modes are as follows:

      Boot Mode:   EMU_KEY        EMU_BMODE
                   (0xD00)	     (0xD01)
      ---------------------------------------
      Wait		  !=0x55AA               X
      I/O		   0x55AA	         0x0000
      SCI		   0x55AA	         0x0001
      Wait 	           0x55AA	         0x0002
      Get_Mode	           0x55AA	         0x0003
      SPI		   0x55AA	         0x0004
      I2C		   0x55AA	         0x0005
      OTP		   0x55AA	         0x0006
      Wait		   0x55AA	         0x0007
      Wait		   0x55AA	         0x0008
      SARAM		   0x55AA	         0x000A	  <-- "Boot to SARAM"
      Flash		   0x55AA	         0x000B
      Wait		   0x55AA                Other

   Write EMU_KEY to 0xD00 and EMU_BMODE to 0xD01 via the debugger
   according to the Boot Mode Table above. Build/Load project,
   Reset the device, and Run example

   $End_Boot_Table
**********************************************/
#include "DSP28x_Project.h"     // Device Headerfile and Examples Include File
#include "LEDs.h"

interrupt void tim0_isr(void);

void main(void)
{

// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2802x_SysCtrl.c file.
   InitSysCtrl();

// Step 2. Initalize GPIO:
// This example function is found in the DSP2802x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example


// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
   DINT;

// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the DSP2802x_PieCtrl.c file.
   InitPieCtrl();

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

// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in DSP2802x_DefaultIsr.c.
// This function is found in DSP2802x_PieVect.c.
   InitPieVectTable();


// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2802x_InitPeripherals.c
// InitPeripherals(); // Not required for this example

// Step 5. User specific code:

   CpuTimer0Regs.TPR.bit.TDDR = 59;
   CpuTimer0Regs.TPRH.bit.TDDRH = 0; //对输入时钟60分频，60M/60=1M
   CpuTimer0Regs.PRD.all = 1000000;//定时1s
   CpuTimer0Regs.TCR.bit.TRB = 1; //reload
   CpuTimer0Regs.TCR.bit.TIE = 1; //使能中断
   CpuTimer0Regs.TCR.bit.TSS = 0; //开始计数


   EALLOW;
   PieVectTable.TINT0 = &tim0_isr;
   PieCtrlRegs.PIECTRL.bit.ENPIE = 1;	//使能PIE
   PieCtrlRegs.PIEIER1.bit.INTx7 = 1;	//使能int1.7
   IER |= 0x0001;//使能GROUP1
   EINT;
   EDIS;

   LEDs_init();
   while(1)
   {
   };
}

interrupt void tim0_isr(void)
{
	LED_toggle(LED0);
	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}

//===========================================================================
// No more.
//===========================================================================