memory.c

mp3播放器

#include "dp8051.h"
#include "config.h"
#include "absacc.h"
#include "constant.h"
#include "variable.h"
#include "function.h"
#include "sdhost.h"
#include "sssmp3_regs.h"
#include "fat.h"
#include "mp3_appl.h"
//***********************************************
/************************************************
函 数 名: check_nor_flash()
功    能：测试nor flash ( read )
说    明：
调    用：
全局变量：
入口参数：无
出口参数：无
返 回 值：无
************************************************/
//测试nor flash ( read )
bit check_nor_flash(void)
{
	U32 xdata address = 0x100000L,j;
  U8 data i;

#if TX_DEBUG
  //读出数据并将其通过串口发出
  SendChar(FVAR(U8, address));
  for(i = 0; i < 20; i++)
    SendChar(FVAR(U8, address |(0x01L << i)));
  address = 0x100001L;
  j = 0x01L;
  for(i = 1; i < 20; i++)
  {
    j |= (0x01L << i);
	SendChar(FVAR(U8, address | j));
  }
#endif
//***********************************************
  //检查nor flash数据是否正确
  address = 0x100000L;
  if(FVAR(U8, address) != 0x00)
  {
	return KO;
  }
  for(i = 0; i < 20; i++)
  {
    if(FVAR(U8, (address |(0x01L << i))) != i + 1)
	{
	  return KO;
	}
  }
  address = 0x100001L;
  j = 0x01L;
  for(i = 1; i < 20; i++)
  {
    j |= (0x01L << i);
	if(FVAR(U8, (address | j)) != i + 0x14)
	{
	  return KO;
    }
  }
  return OK;
}
/************************************************
函 数 名: check_sram()
功    能：测试外接SRAM ( read and write )
说    明：
调    用：
全局变量：
入口参数：无
出口参数：无
返 回 值：无
************************************************/
//测试外接SRAM ( read and write )
bit check_sram(void)
{
  U32 xdata address,j;
  U8 data i;

  //往SRAM写入数据
  address = 0x200000L;
  *FARRAY(U8, address) = 0x28;
  for(i = 0; i < 17; i++)
  {
    *FARRAY(U8, address |(0x01L << i)) = 0x29 + i;
  }
  address = 0x200001L;
  j = 0x01L;
  for(i = 1; i < 17; i++)
  {
    j |= (0x01L << i);
	*FARRAY(U8, address | j) = 0x39 + i;
  }
//***********************************************
#if TX_DEBUG
  //将写入的数据读出并通过串口发出
  address = 0x200000L;
  SendChar(FVAR(U8, address));
  for(i = 0; i < 17; i++)
  {
	SendChar(FVAR(U8, (address |(0x01L << i))));
  }
  address = 0x200001L;
  j = 0x01L;
  for(i = 1; i < 17; i++)
  {
    j |= (0x01L << i);
	SendChar(FVAR(U8, (address | j)));
  }
#endif
//***********************************************
  //检查写入SRAM的数据是否正确
  //ExternSRAMFlag = OK;
  address = 0x200000L;
  if(FVAR(U8, address) != 0x28)
  {
	return KO;
  }
  for(i = 0; i < 17; i++)
  {
	if(FVAR(U8, (address |(0x01L << i))) != 0x29 + i)
	{
	  return KO;
	}
  }
  address = 0x200001L;
  j = 0x01L;
  for(i = 1; i < 17; i++)
  {
    j |= (0x01L << i);
	if(FVAR(U8, (address | j)) != 0x39 + i)
	{
	  return KO;
	}
  }
  return OK;
}