dsp281x_gpio.c

一个28系列dsp应用的程序,包括adc,cpu_timer,pwm,gpio,sci,spi等模块

//###########################################################################
//
// FILE:	DSP281x_Gpio.c
//
// TITLE:	DSP281x General Purpose I/O Initialization & Support Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  1.00| 11 Sep 2003 | L.H. | No change since previous version (v.58 Alpha)
//###########################################################################

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

//---------------------------------------------------------------------------
// InitGpio: 
//---------------------------------------------------------------------------
// This function initializes the Gpio to a known state.
//
void InitGpio(void)
{

  EALLOW;
 
     GpioMuxRegs.GPFMUX.all=0x003F;  //spi ,  sci and xf  enable
     GpioMuxRegs.GPFDIR.bit.GPIOF14=1;     //  xf  output
 
	GpioMuxRegs.GPFDIR.bit.GPIOF6=1;
	
	GpioMuxRegs.GPAMUX.all=0x00FF;	
	//add for ad7714 use GPIOB(4s) and GPIOE(1s) 2005.10.29
	GpioMuxRegs.GPBMUX.all=0X0000;
	GpioMuxRegs.GPBDIR.bit.GPIOB1=1;//77sclk:output
    GpioMuxRegs.GPBDIR.bit.GPIOB2=1;//77din:output
    GpioMuxRegs.GPBDIR.bit.GPIOB3=0;//77dout:output
    GpioMuxRegs.GPBDIR.bit.GPIOB5=0;//77cs:output 
    GpioMuxRegs.GPEMUX.all=0X0000;
	GpioMuxRegs.GPEDIR.bit.GPIOE1=0;//77ready:input for XINT process
     
     EDIS;

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