diff --git a/app.json b/app.json
new file mode 100644
index 0000000..9c7dc86
--- /dev/null
+++ b/app.json
@@ -0,0 +1,7 @@
+{
+    "btn-data01": {
+        "title": "握手包",
+        "value": "hello\n",
+        "hex":1
+    }
+}
diff --git a/data.json b/data.json
new file mode 100644
index 0000000..8ae767d
--- /dev/null
+++ b/data.json
@@ -0,0 +1,39 @@
+{
+    "Label": {
+        "name":"label-dtitle",
+        "text":"数据标题",
+        "column": 1,
+        "row": 1
+    },
+    "Entry": {
+        "name":"entry-dfile",
+        "bg":"gold",
+        "width":10,
+        "column": 2,
+        "row": 1
+    },
+    "Text":{
+        "name":"text-dsetting",
+        "bg":"#cccccc",
+        "width":30,
+        "height":3,
+        "column": 1,
+        "columnspan": 3,
+        "rowweight": 1,
+        "row": 2
+    },
+    "Checkbutton":{
+        "name":"ckbtn-dhex",
+        "text":"HEX格式",
+        "sticky": "w",
+        "column": 1,
+        "row": 3
+    },
+    "Button":{
+        "name":"btn-dsave",
+        "text":"保存",
+        "column": 3,
+        "colweight": 1,
+        "row": 3
+    }
+}
diff --git a/scomm.json b/scomm.json
index 9281145..900d535 100755
--- a/scomm.json
+++ b/scomm.json
@@ -105,6 +105,20 @@
             "sticky": "w",
             "column": 4,
             "row": 4
+        },
+        {
+            "name":"ckbtn-split",
+            "text":"分帧间隔",
+            "sticky": "w",
+            "column": 5,
+            "row": 3
+        },
+        {
+            "name":"ckbtn-cycle",
+            "text":"循环发送",
+            "sticky": "w",
+            "column": 5,
+            "row": 4
         }
     ],
     "Entry": [
@@ -123,6 +137,20 @@
             "column": 4,
             "row": 1
         },
+        {
+            "name":"entry-split",
+            "bg":"gold",
+            "width":10,
+            "column": 6,
+            "row": 3
+        },
+        {
+            "name":"entry-cycle",
+            "bg":"gold",
+            "width":10,
+            "column": 6,
+            "row": 4
+        },
         {
             "name":"entry-sendText",
             "bg":"gold",
@@ -146,7 +174,7 @@
         "Label":[
             {
                 "name":"label-rscript",
-                "text":"解帧脚本：",
+                "text":"解析脚本：",
                 "column": 2,
                 "row": 1
             },
diff --git a/scomm.py b/scomm.py
index e6fc189..18548c9 100755
--- a/scomm.py
+++ b/scomm.py
@@ -1,8 +1,70 @@
 #! /usr/bin/env python3
 
+import os,json
 import tkgen.gengui
+import tkinter
+
+
+def open_wm_data(root,btn):
+    def _save_dfile():
+        pass
+    print('debug: toplevel=%s'%btn)
+    root.toplevel('data.json', title='预置数据')
+    _cfg = root.usercfg.get(btn)
+    if _cfg:
+        root.entry('entry-dfile').set(_cfg.get('title', btn))
+        root.get('text-dsetting').insert('end', _cfg.get('value'))
+        if _cfg.get('hex'):
+            root.get('ckbtn-dhex').select()
+        else:
+            root.get('ckbtn-dhex').deselect()
+        root.button('btn-dsave', cmd=_save_dfile, focus=True)
+def open_wm_pack(root,btn):
+    print('debug: toplevel=%s'%btn)
+    #root.toplevel('pack.json', title='组帧脚本')
+def open_wm_unpack(root,btn):
+    print('debug: toplevel=%s'%btn)
+    #root.toplevel('unpack.json', title='解析脚本')
+
 
 if __name__ == '__main__':
     root = tkgen.gengui.TkJson('scomm.json', title='scomm串口调试助手')
-    #root = tkgen.gengui.TkJson('rsa_ui.json', title='scomm串口调试助手')
+
+    cfg_file = 'app.json'
+    root.usercfg = json.load(open(cfg_file)) if os.path.isfile(cfg_file) else {}
+
+    # 预置数据回调函数
+    for i in range(10):
+        name = 'btn-data%02d'%(i+1)
+        try:
+            btn = root.get(name)
+            root.button(name, lambda x=name: open_wm_data(root,x))
+            _cfg = root.usercfg.get(name)
+            if _cfg and btn:
+                btn.config(text=_cfg.get('title',name))
+        except:
+            pass
+    # 组帧脚本回调函数
+    for i in range(10):
+        name = 'btn-pack%02d'%(i+1)
+        try:
+            btn = root.get(name)
+            root.button(name, lambda x=name: open_wm_pack(root,x))
+            _cfg = root.usercfg.get(name)
+            if _cfg and btn:
+                btn.config(text=_cfg.get('title',name))
+        except:
+            pass
+    # 解析脚本回调函数
+    for i in range(10):
+        name = 'btn-unpack%02d'%(i+1)
+        try:
+            btn = root.get(name)
+            root.button(name, lambda x=name: open_wm_unpack(root,x))
+            _cfg = root.usercfg.get(name)
+            if _cfg and btn:
+                btn.config(text=_cfg.get('title',name))
+        except:
+            pass
+
     root.mainloop()
diff --git a/tkgen/gengui.py b/tkgen/gengui.py
index f5bf6b2..1f1ec86 100755
--- a/tkgen/gengui.py
+++ b/tkgen/gengui.py
@@ -284,6 +284,7 @@ class TkJson(tkinter.Tk):
         var = tkinter.IntVar()
         item = self.get(name)
         item.config(variable=var)
+        item.var = var
 
         if focus:
             item.focus_set()
@@ -303,6 +304,7 @@ class TkJson(tkinter.Tk):
 
         item = self.get(name)
         item.config(textvariable=var)
+        item.var = var
 
         if focus:
             item.focus_set()
@@ -321,6 +323,7 @@ class TkJson(tkinter.Tk):
         var = tkinter.StringVar()
         item = self.get(name)
         item.config(textvariable=var)
+        item.var = var
         return var
 
     def get(self, name):