memtest.c

基于arm9的,usb设备(u盘)的读写操作实现.

/*********************************************
  NAME: memtest.c
  DESC: test SDRAM of SMDK2410 b/d
  HISTORY:
  03.27.2002:purnnamu: first release
 *********************************************/

#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "mmu.h"


void SDRAMTest(void)
{
    int i=0;
    U32 data;
    short int memError=0;
    U32 *pt;
    
//    Uart_Printf("\n\nSDRAM Memory Test(%xh-%xh):WR",_SDRAM_STARTADDRESS,_SDRAM_STARTADDRESS + _SDRAM_DOWNLOADSIZE);
    pt=(U32 *)_SDRAM_STARTADDRESS;
    while((U32)pt < (_SDRAM_STARTADDRESS + _SDRAM_DOWNLOADSIZE))
    {
		*pt=(U32)pt;//*pt=i;
		//i=i+4;
		pt++;
    }

//    Uart_Printf("\b\bRD");
    pt=(U32 *)_SDRAM_STARTADDRESS;
	i=0;
    while((U32)pt < (_SDRAM_STARTADDRESS + _SDRAM_DOWNLOADSIZE))
    {
		data=*pt;
		if(data != (U32)pt)
		{
		    memError=1;
//		    Uart_Printf("\b\bSDRAM test fail at :0x%x=0x%x\n",pt,data);
		    break;
		}
		//Uart_Printf("\b\b 0x%x=0x%x\n",pt,data);
		pt++;
		//i=i+4;
    }
	pt--;
    if(memError==0)
    {
//    	Uart_Printf("\b\bSDRAM test O.K.\n");
    	Led(LEDALL_OFF);
    	Led(LED1_ON);
    }
	//Uart_Printf("\n 0x%x=0x%x\n",pt,data);
}

void SRAMTest(void)
{
    int i=0;
    U32 data;
    short int memError=0;
    U32 *pt;

    i=0;
    memError=0;
//    Uart_Printf("\n\nSRAM Memory Test(%xh-%xh):WR",_SRAM_STARTADDRESS,_SRAM_ENDADDRESS);

    pt=(U32 *)_SRAM_STARTADDRESS;
    while((U32)pt < (_SRAM_ENDADDRESS))
    {
		*pt=(U32)pt;
		i++;
		pt++;
    }

//    Uart_Printf("\b\bRD");
    pt=(U32 *)_SRAM_STARTADDRESS;
	i=0;
    while((U32)pt < (_SRAM_ENDADDRESS))
    {
		data=*pt;
		if(data!=(U32)pt)
		{
		    memError=1;
//		    Uart_Printf("\b\bSRAM test fail at :0x%x=0x%x\n",pt,data);
		    break;
		}
		pt++;
		i++;
    }

    if(memError==0)
    {
//    	Uart_Printf("\b\bSRAM test O.K.\n");    
    	Led(LEDALL_OFF);
    	Led(LED2_ON);
    }    	
	//Uart_Printf("\n 0x%x=0x%x\n",pt,data);  
}