diff --git a/scomm.py b/scomm.py
index cc944fc..bdae6f0 100755
--- a/scomm.py
+++ b/scomm.py
@@ -20,6 +20,12 @@ def strnow():
 def tohex(b):
     return ' '.join(['%02X'%x for x in b])
 
+def uint16(b):
+    return b[0]*256+b[1]
+def int16(b):
+    d = (b[0]*256+b[1])
+    return d>=0x80 and (d-0x10000) or d
+
 class UIproc():
     def __init__(self, app):
         self.root = app
@@ -115,7 +121,7 @@ class UIproc():
                 #self.text_recv.insert(_i0, '\n'+text)
             for cb in self.root.unpack.values():
                 try:
-                    if cb: text += '\n[%s] %s'%(cb['title'],eval(cb['value'], {"data":data}))
+                    if cb: text += eval(cb['value'],{'data':data, 'uint16':uint16,'int16':int16}) or ''
                 except: pass
             self.text_recv.delete(_i0,'end')
             _i0 = self.text_recv.index('end')
@@ -208,6 +214,7 @@ class SerComm():
         t.start()
 
     def receiveDataLoop(self):
+        self.com.flush()
         while not self.comProgressStop:
             try:
                 if self.com.is_open:
@@ -215,7 +222,7 @@ class SerComm():
                     if data:
                         self.ui.log('%s: recv %s bytes: %s' % (self.com.port,len(data),str(data)))
                         self.ui.dmesg('recv', data)
-                    time.sleep(0.01)
+                    time.sleep(0.05)
                 else:
                     time.sleep(1)
             except Exception as e:
@@ -277,8 +284,6 @@ class SerComm():
                     self.com.write_timeout = 0
                     self.com.inter_byte_timeout = 0
                     self.com.open()
-                    self.com.reset_input_buffer()
-                    self.com.reset_output_buffer()
                     self.ui.serial_open()
                     self.ui.log('%s: open success' % self.com.port)
                     self.comProgressStop = False
diff --git a/usercfg.json b/usercfg.json
index f9af3dd..cbbf54f 100644
--- a/usercfg.json
+++ b/usercfg.json
@@ -1,19 +1,19 @@
 {
     "baud": "9600",
     "btn-data01": {
-        "hex": 0,
-        "title": "\u63e1\u624b\u5305",
-        "value": "hello"
+        "hex": 1,
+        "title": "fan on",
+        "value": "01 10 30 12 00 01 02 00 01 54 E1"
     },
     "btn-data02": {
         "hex": 1,
-        "title": "HEX\u6d4b\u8bd5",
-        "value": "01 02 03 04 05"
+        "title": "fan off",
+        "value": "01 10 30 12 00 01 02 00 02 14 E0"
     },
     "btn-data03": {
-        "hex": 0,
-        "title": "\u4e2d\u6587\u6d4b\u8bd5",
-        "value": "\u82b1\u95f4\u4e00\u58f6\u9152\uff0c\u72ec\u914c\u65e0\u76f8\u4eb2\u3002\n\u4e3e\u676f\u9080\u660e\u6708\uff0c\u5bf9\u5f71\u6210\u4e09\u4eba\u3002\n\u6708\u65e2\u4e0d\u89e3\u996e\uff0c\u5f71\u5f92\u968f\u6211\u8eab\u3002\n\u6682\u4f34\u6708\u5c06\u5f71\uff0c\u884c\u4e50\u987b\u53ca\u6625\u3002\n\u6211\u6b4c\u6708\u5f98\u5f8a\uff0c\u6211\u821e\u5f71\u96f6\u4e71\u3002\n\u9192\u65f6\u76f8\u4ea4\u6b22\uff0c\u9189\u540e\u5404\u5206\u6563\u3002\n\u6c38\u7ed3\u65e0\u60c5\u6e38\uff0c\u76f8\u671f\u9088\u4e91\u6c49\u3002"
+        "hex": 1,
+        "title": "reboot",
+        "value": "01 10 30 11 00 01 02 00 01 54 D2"
     },
     "btn-data04": {
         "hex": 0,
@@ -25,6 +25,21 @@
         "title": "reset RTS",
         "value": "{\"rts\":1,\"text\":\"\"}"
     },
+    "btn-data06": {
+        "hex": 1,
+        "title": "silent",
+        "value": "01 10 30 03 00 01 02 00 00 96 60"
+    },
+    "btn-data07": {
+        "hex": 1,
+        "title": "read.cfg",
+        "value": "01 03 30 00 00 16 5A EE"
+    },
+    "btn-data08": {
+        "hex": 1,
+        "title": "auto report",
+        "value": "01 10 30 03 00 01 02 00 01 57 A0"
+    },
     "btn-unpack01": {
         "title": "HEX print",
         "value": "' '.join(['%02X'%x for x in data])"
@@ -33,8 +48,16 @@
         "title": "C style print",
         "value": "'\\\\x'+'\\\\x'.join('%02x'%x for x in data)"
     },
-    "cycle": "10",
+    "btn-unpack03": {
+        "title": "hex2dec[-3:-2]",
+        "value": "len(data)==26 and '\\t['+'%5d' % (data[-2]*256+data[-3])+']'"
+    },
+    "btn-unpack05": {
+        "title": "s17-eeprom",
+        "value": "'\\nad0fix=%s\\n' % (uint16(data[17:]))"
+    },
+    "cycle": "100",
     "encoding": "gbk",
-    "split": "99ms",
+    "split": "500",
     "uservar": ""
 }
\ No newline at end of file