io.c

合众达SEED-DTK2812 光盘内容 DSP源码 用户指南 实验手册

/******************************************************************************/
/*  Copyright 2004 by SEED Electronic Technology LTD.                         */
/*  All rights reserved. SEED Electronic Technology LTD.                      */
/*  Restricted rights to use, duplicate or disclose this code are             */
/*  granted through contract.                                                 */
/*  MODULE NAME... DARAM on board											  */
/*  FILENAME...... DEC5416_SRAM.c											  */
/*  PROJECT....... Read and write on-board daram memory of TMS320VC5502	      */
/*  作者: gao		                                                          */
/*  版本:1.0                                                                  */
/*  日期:06.11.10                                                             */
/******************************************************************************/
#include "DSP28_Device.h"
#include "comm.h"
#include "ext_inf.h"

/*交通灯操作宏定义*/
#define  EASTEWEST     0x88c	//交通灯东西通（南北禁行）
#define  SOUTHNORTH    0x311	//交通灯南北通（东西禁行）  
#define  IOCHANGE      0x462	//交通灯各方向黄灯亮
#define  ALLFORBIN     0x914	//交通灯各方向均禁行
//实验操控：
//选择TESTCOMMAND:1为自动运行,2为夜间模式,3为交通灯东西通,
//                 4为交通灯南北通,5为禁行
#define TESTCOMMAND   1         //交通灯操作命令选择

/*定义扩展总线存储器空间页地址寄存器地址为0x004020*/
volatile unsigned int* p_ceselect=(volatile unsigned int *)0x004020;
/*定义交通灯IO口的地址为0x80000*/
volatile unsigned int* p_trafficaddr=(volatile unsigned int *)0x080000;
//////////////
unsigned int TestCommand;
unsigned int iostatus=0;
/******************************************************************/
void delay(int period);
/******************************************************************/

void main(void){

	/*初始化系统*/
	InitSysCtrl();
	*p_ceselect =0x6 ;//打开ce3空间
	
#if TESTCOMMAND==1
	TestCommand =TRAFFICAUTO;//自动运行 0xAA14
#endif
#if TESTCOMMAND==2
	TestCommand =TRAFFICNIGHT;//夜间模式 0xAA16
#endif
#if TESTCOMMAND==3
	TestCommand =TRAFFICEAST;//交通灯东西通  0xAA1A
#endif
#if TESTCOMMAND==4
	TestCommand =TRAFFICSOUTH;//交通灯南北通 0xAA1B
#endif
#if TESTCOMMAND==5
	TestCommand =TRAFFICFORBID;//禁行 0xAA1C
#endif

	for(;;){		
		switch(TestCommand){
			/*自动运行模式*/
			case TRAFFICAUTO:
				/*白天模式*/
				/*从东西到南北*/
				iostatus = EASTEWEST;					
			    *p_trafficaddr=iostatus;			
			    delay(2000);
			    iostatus = IOCHANGE;				
			    *p_trafficaddr=iostatus;				
			    delay(1000);
			    iostatus = SOUTHNORTH;			
			    *p_trafficaddr=iostatus;
			    delay(8000);
			    
			    /*从南北到东西*/
			    iostatus = SOUTHNORTH;			
			    *p_trafficaddr=iostatus;
			    delay(2000);
			    iostatus = IOCHANGE;		
			    *p_trafficaddr=iostatus;
			    delay(1000);
			    iostatus = EASTEWEST;		
			    *p_trafficaddr=iostatus;
			    delay(8000);
			    break;
			    /*夜间模式*/
			case TRAFFICNIGHT:
				iostatus = IOCHANGE;			
			    *p_trafficaddr=iostatus;
			    delay(6000);
			    iostatus = 0;			
			    *p_trafficaddr=iostatus;
			    delay(6000);
			    break;
				/*人工模式*/
			/*交通灯东西通*/
			case TRAFFICEAST:
		    	iostatus = IOCHANGE;		
			 	*p_trafficaddr=iostatus;
				delay(1000);
				iostatus = EASTEWEST;
				*p_trafficaddr=iostatus;
				delay(2000);
				TestCommand = 0;
				break;    
			/*交通灯南北通*/	
			case TRAFFICSOUTH:
				iostatus = IOCHANGE;			
				*p_trafficaddr=iostatus;			
				delay(1000);
				iostatus = SOUTHNORTH;			
				*p_trafficaddr=iostatus;
				delay(2000);
				TestCommand = 0;
				break;
			/*禁行*/	
			case TRAFFICFORBID:
				iostatus = IOCHANGE;				
				*p_trafficaddr=iostatus;				
				delay(1000);
				iostatus = ALLFORBIN;									
				*p_trafficaddr=iostatus;		
				delay(2000);
				TestCommand = 0;
				break;
			default:
				break;
		}        
	}

} 	
/******************************************************************/ 
void delay(int period)
{
    int i, j;
    
    for(i=0; i<period; i++)
    {
        for(j=0; j<0xc00; j++);
    }
}
//===========================================================================
// No more.
//===========================================================================