emWin文件浏览TreeView控件问题

glyxz1990 · 发表于 2014-8-8 11:03:48

调试程序发现程序卡死在hParent=TREEVIEW_GetItem(hTree, hNode, TREEVIEW_GET_PARENT);里，直接进入
void HardFault_Handler(void)
{
/* Go to infinite loop when Hard Fault exception occurs */
while (1)
{
}
}

程序：
/*********************************************************************
* *
* SEGGER Microcontroller GmbH & Co. KG *
* Solutions for real time microcontroller applications *
* *
**********************************************************************
* *
* C-file generated by: *
* *
* GUI_Builder for emWin version 5.22 *
* Compiled Jul 4 2013, 15:16:01 *
* (c) 2013 Segger Microcontroller GmbH & Co. KG *
* *
**********************************************************************
* *
* Internet: www.segger.com Support: support@segger.com *
* *
**********************************************************************
*/

// USER START (Optionally insert additional includes)
// USER END

#include "DIALOG.h"
#include "MyTask.h"

#define FILE_PATH_MAX _MAX_LFN + 1
//#define FileBrowerList "0:/SYSTEM/ConfigFile/FileBrowerList.txt"

static WM_HWIN hWin_parent;

/*********************************************************************
*
* Defines
*
**********************************************************************
*/
#define ID_FRAMEWIN_0 (GUI_ID_USER + 0x00)
#define ID_TREEVIEW_0 (GUI_ID_USER + 0x01)

/*********************************************************************
*
* Static data
*
**********************************************************************
*/
/************************************************************************************
*函数: ScanFiles
*作者: alan
*日期: 2014.07.07
*参数: path:遍历路径名
hFile:记录文件路径的文件指针结构体
*返回: None
*描述: 遍历此文件夹及子文件夹下所有文件
************************************************************************************/
static FRESULT ScanFiles(char* path,WM_HWIN hTree, TREEVIEW_ITEM_Handle hNode,FILE_TYPE fileType,u32 *fileNum)
{
FRESULT res;
FILINFO fno;
DIR dir;
UINT rw;
int i;
char *fn; /* This function is assuming non-Unicode cfg. */
char file_name[FILE_PATH_MAX]={0};
TREEVIEW_ITEM_Handle hItem;

#if _USE_LFN
static char lfn[FILE_PATH_MAX]={0}; /* Buffer to store the LFN */
fno.lfname = lfn;
fno.lfsize = sizeof(lfn);
#endif

res = f_opendir(&dir, (const TCHAR*)path); /* Open the directory */
if (res == FR_OK)
{
i = strlen((const char*)path);
for (;;)
{
res = f_readdir(&dir, &fno); /* Read a directory item */
if (res != FR_OK || fno.fname[0] == 0) break; /* Break on error or end of dir */
if (fno.fname[0] == '.') continue; /* Ignore dot entry */ //忽略上级目录
#if _USE_LFN
fn = *fno.lfname ? fno.lfname : fno.fname;
#else
fn = fno.fname;
#endif
if (fno.fattrib & AM_DIR) /* It is a directory */
{
if(hTree != NULL && hNode != NULL)
{
//目录，创建结点
hItem = TREEVIEW_ITEM_Create(TREEVIEW_ITEM_TYPE_NODE,fn,0);
//把结点加入到目录树中
TREEVIEW_AttachItem(hTree,hItem,hNode,TREEVIEW_INSERT_FIRST_CHILD);
}
//在路径最后添加文件夹路径名
sprintf(&path, "/%s", fn);
//遍历此新文件夹下的文件
res = ScanFiles(path,hTree,hItem,fileType,fileNum);
if (res != FR_OK) break;//打开失败，跳出循环
path = 0;//末尾添加结束字符
}
else /* It is a file. */
{
if(fileType == TEXTFILE )
{
//判断如果不是txt文件，跳出本函数
if(!(strstr(fn,".txt")||strstr(fn,".TXT")
||strstr(fn,".c")||strstr(fn,".c")
||strstr(fn,".cpp")||strstr(fn,".CPP")
||strstr(fn,".h")||strstr(fn,".h")))
{
return res;
}
}
//判断如果不是Image文件，跳出本函数
else if(fileType ==IMAGEFILE)
{
if(!(strstr(fn,".bmp")||strstr(fn,".BMP")||
strstr(fn,".jpg")||strstr(fn,".JPG")||
strstr(fn,".gif")||strstr(fn,".GIF")||
strstr(fn,".png")||strstr(fn,".PNG")))
{
return res;
}
}
/* 根据要求是否创建目录树 */
if(hTree != NULL && hNode != NULL)//创建目录树
{
hItem = TREEVIEW_ITEM_Create(TREEVIEW_ITEM_TYPE_LEAF,fn,0);//文件，创建树叶
TREEVIEW_AttachItem(hTree,hItem,hNode,TREEVIEW_INSERT_FIRST_CHILD);//把树叶添加到目录树
// (*fileNum)++;//记录文件数目
}
else
{
(*fileNum)++;//记录文件数目
}
}

}
f_closedir(&dir);
}
return res;
}

void Fill_FileList(char *path,WM_HWIN hTree, TREEVIEW_ITEM_Handle hNode,FILE_TYPE fileType,u32 *fileNum)
{
TREEVIEW_ITEM_Handle hTreeItem_Flash;
TREEVIEW_ITEM_Handle hTreeItemCur;
char p_path[FILE_PATH_MAX]={0}; //目录名指针
// FIL hFile; //文件句柄
FRESULT fres; //返回结果

hTreeItemCur=hNode;
strcpy(p_path,path); //复制目录名到指针
fres = ScanFiles(p_path,hTree,hNode,fileType,fileNum); //递归扫描文件

hTreeItem_Flash = TREEVIEW_ITEM_Create(TREEVIEW_ITEM_TYPE_NODE, "Flash[1:]", 0);
TREEVIEW_AttachItem(hTree, hTreeItem_Flash, hTreeItemCur, TREEVIEW_INSERT_BELOW);
strcpy(p_path,"1:"); //复制目录名到指针
fres = ScanFiles(p_path,hTree,hTreeItem_Flash,fileType,fileNum); //递归扫描文件
}
/*********************************************************************
*
* _aDialogCreate
*/
static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
{ FRAMEWIN_CreateIndirect, "FileBrower", ID_FRAMEWIN_0, 0, 0, 240, 320, 0, 0x64, 0 },
{ TREEVIEW_CreateIndirect, "Treeview", ID_TREEVIEW_0, 0, 0, 230, 293, 0, 0x0, 0 },
};

/*********************************************************************
*
* Static code
*
**********************************************************************
*/

// USER START (Optionally insert additional static code)
void get_pathname(WM_HWIN hTree,TREEVIEW_ITEM_Handle hNode,u8* path)
{
u8 hItemname[100]={0};
u8 len=0;
TREEVIEW_ITEM_Handle hParent;

TREEVIEW_ITEM_GetText(hNode,hItemname,100);//当前句柄的文本
if((0!=strcmp((char*)hItemname,"SDCard[0:]"))&&
(0!=strcmp((char*)hItemname,"Flash[1:]")))//不是根目录
{
hParent=TREEVIEW_GetItem(hTree, hNode, TREEVIEW_GET_PARENT);//父句柄
get_pathname(hTree, hParent,path);
}
else
{
if(0==strcmp((char*)hItemname,"SDCard[0:]")) sprintf((char*)path,"%s","0:");
else if(0==strcmp((char*)hItemname,"Flash[1:]")) sprintf((char*)path,"%s","1:");
return;
}
len=strlen((char*)path);
sprintf((char*)(path+len),"/%s",hItemname);
}
// USER END

/*********************************************************************
*
* _cbDialog
*/
static void _cbDialog(WM_MESSAGE * pMsg) {

TREEVIEW_ITEM_Handle hTreeItem_SDCard;
TREEVIEW_ITEM_Handle hTreeItemCur;
TREEVIEW_ITEM_INFO ItemInfo;
TREEVIEW_ITEM_Handle hNode;
WM_HWIN hItem;
WM_HWIN hTree;
int NCode;
int Id;
u32 FileNum=0;
u8 *pathname;

GUI_HMEM hMem_pathname;

switch (pMsg->MsgId) {
case WM_INIT_DIALOG:
//
// Initialization of 'FileBrower'
//
hItem = pMsg->hWin;
FRAMEWIN_SetFont(hItem, &GUI_FontHZ16);
FRAMEWIN_SetTitleHeight(hItem, 20);
FRAMEWIN_SetText(hItem, "FileBrower");
FRAMEWIN_AddCloseButton(hItem, FRAMEWIN_BUTTON_RIGHT, 0);
FRAMEWIN_AddMaxButton(hItem, FRAMEWIN_BUTTON_RIGHT, 1);
FRAMEWIN_AddMinButton(hItem, FRAMEWIN_BUTTON_RIGHT, 2);
FRAMEWIN_SetTextAlign(hItem, GUI_TA_LEFT | GUI_TA_VCENTER);
FRAMEWIN_SetTextColor(hItem, 0x00000000);
//
// Initialization of 'Treeview'
//
hTree = WM_GetDialogItem(pMsg->hWin, ID_TREEVIEW_0);
TREEVIEW_SetAutoScrollV(hTree, 1); //使用自动滑动条
TREEVIEW_SetAutoScrollH(hTree, 1); //使用自动滑动条
TREEVIEW_SetSelMode(hTree, TREEVIEW_SELMODE_ROW);
TREEVIEW_SetFont(hTree,&GUI_FontHZ16);

hTreeItemCur = TREEVIEW_GetItem(hTree, 0, TREEVIEW_GET_LAST);
hTreeItem_SDCard = TREEVIEW_ITEM_Create(TREEVIEW_ITEM_TYPE_NODE, "SDCard[0:]", 0);
TREEVIEW_AttachItem(hTree, hTreeItem_SDCard, hTreeItemCur, TREEVIEW_INSERT_BELOW);
//FLASH
Fill_FileList("0:",hTree,hTreeItem_SDCard,ALLFILE,&FileNum);
break;
case WM_NOTIFY_PARENT:
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch(Id) {
case ID_TREEVIEW_0: // Notifications sent by 'Treeview'
/* 查看选中了哪个项目 */
hNode = TREEVIEW_GetSel(pMsg->hWinSrc);
/* 获取该项目的信息 */
TREEVIEW_ITEM_GetInfo(hNode,&ItemInfo);
switch(NCode) {
case WM_NOTIFICATION_CLICKED:
break;
case WM_NOTIFICATION_RELEASED:
if(ItemInfo.IsNode == 0)//点击的是目录树的叶子（即文件）
{
hMem_pathname = GUI_ALLOC_AllocZero(256);
pathname = GUI_ALLOC_h2p(hMem_pathname);
get_pathname(hTree, hNode,pathname);
printf("\r\n%s\r\n",pathname);
GUI_ALLOC_Free(hMem_pathname);
}
break;
case WM_NOTIFICATION_MOVED_OUT:
break;
case WM_NOTIFICATION_SEL_CHANGED:
break;
}
break;
}
break;
default:
WM_DefaultProc(pMsg);
break;
}
}

/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* CreateFileBrower
*/
void CreateFileBrower(WM_HWIN hWin);
void CreateFileBrower(WM_HWIN hWin) {

hWin_parent=hWin;

GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);

}

// USER START (Optionally insert additional public code)
// USER END

/*************************** End of file ****************************/

xfcjava3 · 发表于 2014-8-8 11:03:49

1、先用以下这个函数（TREEVIEW_ITEM_GetInfo（））：

TREEVIEW_ITEM_INFO c_tree; //结构体变量定义

void TREEVIEW_ITEM_GetInfo(TREEVIEW_ITEM_Handle hItem,TREEVIEW_ITEM_INFO * pInfo);

获取：TREEVIEW_ITEM_INFO 的结构体信息。

2、TREEVIEW_ITEM_INFO 结构体中的成员变量：Level

     如果成员变量level 的值，跟传递给函数TREEVIEW_GetItem()的句柄是一样的，

   那么句柄应该就是下一个级的，而不是这个同级的子窗体句柄。

3、这样一来你再调用函数TREEVIEW_GetItem()，就不会出问题了！

taven_song · 发表于 2014-8-8 12:10:17

void CreateFileBrower(WM_HWIN hWin);
void CreateFileBrower(WM_HWIN hWin) {

hWin_parent=hWin;

GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);

}

此处传入的hWin是传入父窗口句柄， GUI_CreateDialogBox 创建时的父窗口是WM_HBKWIN（桌面），前面的代码没认真看，我觉得应该是这里有问题。

glyxz1990 · 发表于 2014-8-8 13:16:19

回复【2楼】taven_song:
---------------------------------
不是这里的问题，我特意将WM_HBKWIN作为父窗口的，一遍全屏显示。
hWin_parent=hWin;只是保存ICONVIEW作为父窗口；备用的。

5498折戟沉沙 · 发表于 2014-8-8 15:17:56

进入这个HardFault_Handler里面，一般都是因为内存溢出、爆栈之类的

你试着分配大一点的GUI_ALLOC_SIZE（μc/GUI上面这个表示存储空间的大小）

或者你让你那个目录的元素稍微少一些，应该就不会出问题了

glyxz1990 · 发表于 2014-8-8 15:41:32

回复【4楼】5498折戟沉沙:
---------------------------------
我用的是外部1MB内存

5498折戟沉沙 · 发表于 2014-8-8 15:59:41

回复【5楼】glyxz1990:
---------------------------------
如果循环边界处理不好，陷入死循环，一直不停申请存储空间的话，最终导致爆栈，从而也会进入HardFault_Handler

你芯片的堆栈大小修改了吗？由于GUI中经常就是递归，所以系统预设的堆栈大小一般是不够的，需要改大一些

glyxz1990 · 发表于 2014-8-8 16:19:18

回复【6楼】5498折戟沉沙:
---------------------------------
堆栈好像没改过，现在板子不能下载了！要先解决下载的问题。郁闷；
http://www.openedv.com/posts/list/0/37649.htm?privmsg=16045&&sysid=4#212790
你看下谢谢