//==============gpio============================//

#include"DSP281x_Device.h"
void Delay(long);
void Configuregpio(void);
void InitialSystem(void);

void main(void)

{
  
  unsigned int LED= 1;
  InitialSystem();      //初始化內(nèi)核寄存器
  
  Configuregpio();       //對(duì)Gpio口進(jìn)行配置
   Delay((long)2000);
  
  while(1)
  {
  
  GpioDataRegs.GPBDAT.bit.GPIOB0=LED;
  Delay((long)2000);
 LED=1-LED;

  }
}

//====================延時(shí)函數(shù)==============================//


void Delay(long end)

{
long  i;

for(i=0;i<end;i++);
 
}



//=====================GPIO口初始化配置======================//

void  Configuregpio(void)

{

EALLOW;   //在向保護(hù)型寄存器寫數(shù)據(jù)時(shí)接觸保護(hù)

//將GPIO口配置成通用I/O口

GpioMuxRegs.GPAMUX.all=0x0;  
GpioMuxRegs.GPBMUX.all=0x0;
GpioMuxRegs.GPDMUX.all=0x0;
GpioMuxRegs.GPEMUX.all=0x0;
GpioMuxRegs.GPFMUX.all=0x0;
GpioMuxRegs.GPGMUX.all=0x0;

//配置管腳輸入輸出功能
GpioMuxRegs.GPADIR.all=0x0;
GpioMuxRegs.GPBDIR.all=0x00FF;
GpioMuxRegs.GPDDIR.all=0x0;
GpioMuxRegs.GPEDIR.all=0x0;
GpioMuxRegs.GPFDIR.all=0x0;
GpioMuxRegs.GPGDIR.all=0x0;

//將所有GPIO口限制設(shè)定為0
GpioMuxRegs.GPAQUAL.all=0x0;
GpioMuxRegs.GPBQUAL.all=0x0;
GpioMuxRegs.GPDQUAL.all=0x0;
GpioMuxRegs.GPEQUAL.all=0x0;
EDIS;     //對(duì)寄存器加保護(hù)
}


//=====================系統(tǒng)初始化函數(shù)===================//

void  InitialSystem(void)

{

EALLOW;                   //在向保護(hù)型寄存器寫數(shù)據(jù)時(shí)接觸保護(hù)
SysCtrlRegs.WDCR=0x00E8;  //  設(shè)置看門狗模塊 ，禁止看門狗

SysCtrlRegs.PLLCR.bit.DIV=10;  //設(shè)置150M時(shí)鐘

SysCtrlRegs.HISPCP.all=0x1;    //設(shè)置高速時(shí)鐘

SysCtrlRegs.LOSPCP.all=0x2;    //設(shè)置低速時(shí)鐘

SysCtrlRegs.PCLKCR.bit.EVAENCLK=0;

SysCtrlRegs.PCLKCR.bit.EVBENCLK=0;

SysCtrlRegs.PCLKCR.bit.SCIAENCLK=0;

SysCtrlRegs.PCLKCR.bit.SCIBENCLK=0;

SysCtrlRegs.PCLKCR.bit.MCBSPENCLK=0;

SysCtrlRegs.PCLKCR.bit.ADCENCLK=0;

SysCtrlRegs.PCLKCR.bit.ECANENCLK=0;

SysCtrlRegs.PCLKCR.bit.SPIENCLK=0;

EDIS;      //對(duì)寄存器加保護(hù)
}