example_28xgpio.c

DSP TMS320F2812的一些图纸和程序 程序已经在图纸所示电路上通过调试

#include "DSP28_Device.h"
#include "DSP28_Globalprototypes.h"
/*---- Flash API include file -------------------------------------------------*/
#include "Flash281x_API_Library.h"


// Prototype statements for functions found within this file.
// interrupt void ISRTimer2(void);
void delay_loop(void);
void Gpio_select(void);

unsigned int var1 = 0;
unsigned int var2 = 0;
unsigned int var3 = 0;
unsigned int var4 = 0;
unsigned int var5 = 0;

void main(void)
{

	InitSysCtrl();

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

	// Initialize Pie Control Registers To Default State:
	InitPieCtrl();

	InitPieVectTable();	
	

// Run GPIO test
	var1= 0x0000;		// sets GPIO Muxs as I/Os
	var2= 0xFFFF;		// 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    =0xAAAA;   
//	GpioDataRegs.GPBDAT.all    =0xAAAA;     
//	GpioDataRegs.GPDDAT.all    =0x0022;    
//	GpioDataRegs.GPEDAT.all    =0x0002; 
	GpioDataRegs.GPFDAT.all    =0x0000;    
//	GpioDataRegs.GPGDAT.all    =0x0020; 	   			  
    delay_loop();
    
//   GpioDataRegs.GPADAT.all    =0x5555;     			
//	GpioDataRegs.GPBDAT.all    =0x5555;     
//	GpioDataRegs.GPDDAT.all    =0x0041;    // Four I/Os only
//	GpioDataRegs.GPEDAT.all    =0x0005;    // ThreeI/Os only
	GpioDataRegs.GPFDAT.all    =0x4000;    
//	GpioDataRegs.GPGDAT.all    =0x0010;    // Two  I/Os only
    delay_loop();	
    }
	
} 	

void delay_loop()
{
    unsigned int      i;
    unsigned int      j;
    for (i = 0; i < 5000; i++) {for (j = 0; j < 2000; j++);}
}

void Gpio_select(void)
{
	 EALLOW;
	 
	//GpioMuxRegs.GPAMUX.all=var1;
    //GpioMuxRegs.GPBMUX.all=var1;   
    //GpioMuxRegs.GPDMUX.all=var1;
    GpioMuxRegs.GPFMUX.all=0x0000;		 
    //GpioMuxRegs.GPEMUX.all=var1; 
   //GpioMuxRegs.GPGMUX.all=var1;
										
    //GpioMuxRegs.GPADIR.all=var2;		// GPIO PORTs  as output
    //GpioMuxRegs.GPBDIR.all=var2;   		// GPIO DIR select GPIOs as output 
    //GpioMuxRegs.GPDDIR.all=var2;
    //GpioMuxRegs.GPEDIR.all=var2;		
    GpioMuxRegs.GPFDIR.all=0x4000; 
    //GpioMuxRegs.GPGDIR.all=var2;

    //GpioMuxRegs.GPAQUAL.all=var3;  		// Set GPIO input qualifier values
    //GpioMuxRegs.GPBQUAL.all=var3;   
    //GpioMuxRegs.GPDQUAL.all=var3;
    //GpioMuxRegs.GPEQUAL.all=var3;
 
    EDIS;
     
}     
//===========================================================================
// No more.
//===========================================================================