www.pudn.com > 2006f2812.rar > Example_28xGpio.c

 
#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. 
//===========================================================================