www.pudn.com > steper8.zip > DSP28_Gpio.c, change:2007-04-13,size:1917b


// 
//      TMDX ALPHA RELEASE 
//      Intended for product evaluation purposes 
// 
//########################################################################### 
// 
// FILE:	DSP28_Gpio.c 
// 
// TITLE:	DSP28 General Purpose I/O Initialization & Support Functions. 
// 
//########################################################################### 
// 
//  Ver | dd mmm yyyy | Who  | Description of changes 
// =====|=============|======|=============================================== 
//  0.55| 06 May 2002 | L.H. | EzDSP Alpha Release 
//  0.56| 20 May 2002 | L.H. | No change 
//  0.57| 27 May 2002 | L.H. | No change 
//########################################################################### 
 
#include "DSP28_Device.h" 
 
//--------------------------------------------------------------------------- 
// InitGpio:  
//--------------------------------------------------------------------------- 
// This function initializes the Gpio to a known state. 
// 
void InitGpio(void) 
{ 
 
// Set GPIO A port pins,AL(Bits 7:0)(input)-AH(Bits 15:8) (output) 8bits 
// Input Qualifier =0, none 
     EALLOW; 
 /*    GpioMuxRegs.GPAMUX.all=0x0001;      
     GpioMuxRegs.GPADIR.all=0xFF00;    	// upper byte as output/low byte as input 
     GpioMuxRegs.GPAQUAL.all=0x0000;	// Input qualifier disabled 
 
// Set GPIO B port pins, configured as EVB signals 
// Input Qualifier =0, none 
// Set bits to 1 to configure peripherals signals on the pins 
     GpioMuxRegs.GPBMUX.all=0xFFFF;    
     GpioMuxRegs.GPBQUAL.all=0x0000;	// Input qualifier disabled 
 
*/ 
 
////********************************** 
 
	GpioMuxRegs.GPAMUX.all = 0x0000; 
	GpioMuxRegs.GPADIR.all = 0xFFFF;   
  
///********************************* 
 
 
     EDIS; 
 
}	 
	 
//=========================================================================== 
// No more. 
//===========================================================================