dsp28_gpio.c

在ccs编程环境下

//
//      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
//  0.58| 29 Jun 2002 | L.H. | No change
//###########################################################################

#include "DSP28_Device.h"

//---------------------------------------------------------------------------
// InitGpio: 
//---------------------------------------------------------------------------
// This function initializes the Gpio to a known state.
//
extern int LED_count;
extern int LED_num;
extern int LED_count2;
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 =0x003F;
	 //GpioMuxRegs.GPAMUX.bit.PWM1_GPIOA0 = 1;
	 GpioMuxRegs.GPAMUX.bit.TDIRA_GPIOA11 = 0;
	 GpioMuxRegs.GPAMUX.bit.TCLKINA_GPIOA12 = 0;
	 GpioMuxRegs.GPAMUX.bit.C1TRIP_GPIOA13 = 0;
	 GpioMuxRegs.GPAMUX.bit.C2TRIP_GPIOA14 = 0;
	 GpioMuxRegs.GPAMUX.bit.C3TRIP_GPIOA15 = 0;
	 GpioMuxRegs.GPDMUX.bit.T2CTRIP_SOCA_GPIOD1 = 0;    
//	 GpioMuxRegs.GPADIR.all=0xFF00;    	// upper byte as output/low byte as input
//	 GpioMuxRegs.GPAQUAL.all=0x0000;	// Input qualifier disabled
	GpioMuxRegs.GPADIR.bit.GPIOA11 = 0;	//as input for switch 1 of s1
	GpioMuxRegs.GPADIR.bit.GPIOA12 = 0;	//as input for switch 2 of s1
	GpioMuxRegs.GPADIR.bit.GPIOA13 = 0;	//as input for switch 3 of s1
	GpioMuxRegs.GPADIR.bit.GPIOA14 = 0;	//as input for switch 4 of s1
	GpioMuxRegs.GPADIR.bit.GPIOA15 = 0;	//as input for switch 5 of s1
	GpioMuxRegs.GPDDIR.bit.GPIOD1 =  0; //as input for switch 6 of s1
// 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.GPBQUAL.all=0x0000;	// Input qualifier disabled

/***************for the LED ****************************/
	GpioMuxRegs.GPBMUX.all =0;// as io
	GpioMuxRegs.GPEMUX.bit.XINT2_ADCSOC_GPIOE1 = 0;// as io
	GpioMuxRegs.GPEMUX.bit.XNMI_XINT13_GPIOE2 = 0; //as io

	
	GpioMuxRegs.GPBDIR.bit.GPIOB11 =1;
	GpioMuxRegs.GPBDIR.bit.GPIOB12 = 1;//as output
	GpioMuxRegs.GPBDIR.bit.GPIOB13 = 1;//as output
	GpioMuxRegs.GPBDIR.bit.GPIOB14 = 1;	
	GpioMuxRegs.GPBDIR.bit.GPIOB15 = 1;
	GpioMuxRegs.GPEDIR.bit.GPIOE1  = 1;
	GpioMuxRegs.GPEDIR.bit.GPIOE2  = 1;


// set brake to gpioe1

     GpioMuxRegs.GPAMUX.bit.T2PWM_GPIOA7 = 0;
     //GpioMuxRegs.GPAMUX.bit.T2PWM_GPIOA7 = 1;
     GpioMuxRegs.GPADIR.bit.GPIOA7 = 1;

// set short to gpioa6
	GpioMuxRegs.GPAMUX.bit.T1PWM_GPIOA6 = 0;
	GpioMuxRegs.GPADIR.bit.GPIOA6 = 1;

// set alarm to gpiof14
	
	 GpioMuxRegs.GPFMUX.bit.XF_GPIOF14=0;//as io
	 GpioMuxRegs.GPFDIR.bit.GPIOF14=1;// as output

// set spistea to gpiof3
	 GpioMuxRegs.GPFMUX.bit.SPISTEA_GPIOF3=0;//as io
	 GpioMuxRegs.GPFDIR.bit.GPIOF3=1;// as output
	 
	 //scib
	 //GpioMuxRegs.GPGMUX.all=0x0030;
	 /*
	 GpioMuxRegs.GPGMUX.bit.SCIRXDB_GPIOG5 =1;
	 GpioMuxRegs.GPGMUX.bit.SCITXDB_GPIOG4 =1;	
 	*/
	  	// Select GPIOs to be Scia pinsP
	 //GpioMuxRegs.GPFMUX.bit.SCITXDA_GPIOF4 = 1;
	 //GpioMuxRegs.GPFMUX.bit.SCIRXDA_GPIOF5 = 1;
     EDIS;

}
void alarm1(void)
{
	if(LED_count >8000)
	{
		LED_count = 0;
		if(LED_num == 0)
		{
			LED_num = 1;
			GpioDataRegs.GPBSET.bit.GPIOB13 =1;
			GpioDataRegs.GPBSET.bit.GPIOB14 =1;
			GpioDataRegs.GPBSET.bit.GPIOB15 =1;
			GpioDataRegs.GPBSET.bit.GPIOB11 =1;
			GpioDataRegs.GPBSET.bit.GPIOB12 =1;
			GpioDataRegs.GPESET.bit.GPIOE1 = 1;
			GpioDataRegs.GPESET.bit.GPIOE2 = 1;
		}
		else
		{
			LED_num = 0;
			GpioDataRegs.GPBCLEAR.bit.GPIOB13 = 1;
			GpioDataRegs.GPBCLEAR.bit.GPIOB14 =1;
			GpioDataRegs.GPBCLEAR.bit.GPIOB15 =1;				
		    GpioDataRegs.GPBCLEAR.bit.GPIOB11 =1;
			GpioDataRegs.GPBCLEAR.bit.GPIOB12 = 1;
		    GpioDataRegs.GPECLEAR.bit.GPIOE1 = 1;
			GpioDataRegs.GPECLEAR.bit.GPIOE2 = 1;
		}
	}
}
		
//===========================================================================
// No more.
//===========================================================================