main.c

基于ARM的应用Source4

#include <string.h>
#include <stdio.h>
#include "Target\44blib.h"

#define  WR_sdram(addr,dat) 	*((volatile unsigned short *)(addr))=(unsigned short)dat
#define  RD_sdram(addr)		    *((volatile unsigned short *)(addr))	
#define  BEGINADDR   0x0c400000

/********************************************/
//   ARMSYS实验三：SDRAM 读写测试 
//   描述：对SDRAM进行操作                    
/********************************************/
	
void Main(void)
{
	char aa;
	int i,j,k;

	Port_Init();
	Uart_Init(0,115200);

	Led_Display(0xf);
	Delay(0);
	Beep(0x1);
	
	Uart_Select(0); //Select UART0//
	Uart_Printf("\n\n*************************************************************************");
	Beep(0x0);
	Uart_Printf("\n*                            立泰电子                                    *");
	Uart_Printf("\n*                          -SDRAM测试-                                  *");
	Uart_Printf("\n*                          Version 1.11                                 *");    
	Uart_Printf("\n*                     Email:[e-mail]                            *");
	Uart_Printf("\n*             UART Config--COM:115.2kbps,8Bit,NP,UART0                  *");
	Uart_Printf("\n*------------------Begin to Start SDRAM test,OK? (Y/N)--------------------*");
    
	Led_Display(0x0);
    aa= Uart_Getch();
	if((aa=='Y')||(aa=='y'))
	{
		Uart_Printf("\nBegin to write 0xc400000--0xc4000ff with 0xaa55...");
		j=BEGINADDR;
		for(i=0;i<255;i++)
		{
	    	WR_sdram(j,0xaa55);
	    	j+=2;
	    }
		j=BEGINADDR;
		k=0;
		for(i=0;i<255;i++)
		{
			if((RD_sdram(j))==0xaa55)
			   k++;
			j+=2;
	    }
		if(k==255)
			Uart_Printf("\nOK, Successfully!");
		else
		    Uart_Printf("\nFailed!");
		
	}
}