写文件乱码有关问题！模拟器没有有关问题，真机乱码！

static int Write(ILog* a_pMe,const char* pFormat,...)
{
#ifdef _DEBUG_
    Loger*                      pMe=(Loger*)a_pMe;
    IFile *                      pFile=pMe->m_pFile; 

    // declare time 
    JulianType                   pDate;
    char*                         pTime;

    // declare log content.
    char*                      pLogContent;
    char                      nn[1024];
    va_list                      cArguments;

    if (pFormat==NULL)
        return EFAILED;    

    MEMSET(nn,0,1024);
    //malloc of pointer.
    pTime=(char*)MALLOC(sizeof(char)*SIZE);
    pLogContent = (char*)MALLOC(sizeof(char)*SIZE);

    // get current time and write into file.
    GETJULIANDATE(0,&pDate);
    SPRINTF(pTime,"[%4d-%02d-%02d %02d:%02d:%02d]:",pDate.wYear,pDate.wMonth,\
        pDate.wDay,pDate.wHour,pDate.wMinute,pDate.wSecond);
    IFILE_Write(pFile, pTime, STRLEN(pTime));

//   定位是这个地方出了问题！！但是不知道怎么解决
    va_start(cArguments, pFormat);
    VSPRINTF(pLogContent,pFormat,cArguments);
    SPRINTF(nn,"%s",pLogContent);
    IFILE_Write(pFile, pLogContent, STRLEN(pLogContent));    
    va_end(cArguments);

    //free the pointer 
    FREEIF(pTime)
    FREEIF(pLogContent);

    //cut line.
    IFILE_Write(pFile, "\r\n----------------\r\n", STRLEN("\r\n----------------\r\n"));
    return SUCCESS;
#endif
}