jtd.c

dsp2812的源程序

#include "DSP28_Device.h"

void Gpio_select(void);
void urgency(void);
void delay_loop(void);
void ready(void);

unsigned int var1 = 0;
unsigned int var2 = 0;
unsigned int var3 = 0;
unsigned long int   i,j,k;

void main(void)
{

	InitSysCtrl();

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

	// Run GPIO test
	var1= 0x0000;		// sets GPIO Muxs as I/Os
	var2= 0xC7FF;		// sets GPIO DIR as outputs
	var3= 0x0000;		// sets the Input qualifier values
	
	Gpio_select();	
	
	// Toggle I/Os  using DATA register for ever
	while(1)
 {    

	GpioDataRegs.GPADAT.all =0x38ED;

  	for(i=0;i<10;i++)
	{
  	   delay_loop();	
  	   if(GpioDataRegs.GPADAT.bit.GPIOA12==0) 
	   { urgency(); }  
  	}
  	   
  	for(j=0;j<2;j++)
  	{	
  		GpioDataRegs.GPADAT.all=0x38FD;
  		delay_loop();
  		GpioDataRegs.GPADAT.all=0x38ED;
        delay_loop();
    }
       
    ready();
    
   	
   	
   	GpioDataRegs.GPADAT.all    =0x38B7;     			
  
  	for(i=0;i<10;i++)
  	{
  	   delay_loop();	
  	   if(GpioDataRegs.GPADAT.bit.GPIOA12==0) 
  	   { urgency(); }  
  	}
  	
  	for(j=0;j<2;j++)
  	{	
  		GpioDataRegs.GPADAT.all=0x38BF;
  		delay_loop();
  		GpioDataRegs.GPADAT.all=0x38B7;
        delay_loop();
    }
       
    ready();
 }
}

void Gpio_select(void)
{
	EALLOW;
	  GpioMuxRegs.GPAMUX.all=var1;
	  GpioMuxRegs.GPADIR.all=var2;		// GPIO PORTs  as output
      GpioMuxRegs.GPAQUAL.all=var3;  	// Set GPIO input qualifier values
    EDIS;
}     

void urgency()	
{   
	 GpioDataRegs.GPADAT.all=0x00BD;
     for(j=0;j<10;j++)
     {delay_loop();}
}        

void ready()
{
	 GpioDataRegs.GPADAT.all=0x38DB;
     for(i=0;i<4;i++)
     {delay_loop();}
}

void delay_loop()//延时子程序
{
     for (k=0;k<5500000;k++) {}
}

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