fix bugs in TinyCloud and About

Menu/GameShell/10_Settings/About/__init__.py

@@ -95,10 +95,16 @@ class AboutPage(Page):
         self._Icons = {}
 
     def CpuMhz(self):
+
+        try:
             with open("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq") as f:
                 content = f.readlines()
             content = [x.strip() for x in content]
             
+        except:
+            print("open %s failed" % "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq")
+            content = ["0"]
+        
         mhz = int(content[0]) / 1000.0
 
         cpuscalemhz = {}

Menu/GameShell/TinyCloud/__init__.py

@@ -9,6 +9,7 @@ from UI.label  import Label
 from UI.fonts  import fonts
 from UI.icon_item import IconItem
 from UI.icon_pool import MyIconPool
+from UI.keys_def  import CurKeys
 
 from libs.DBUS  import is_wifi_connected_now,get_wifi_ip
 
@@ -161,6 +162,13 @@ class TinyCloudPage(Page):
 
         self.SetLabels()
 
+    def KeyDown(self,event):
+        if event.key == CurKeys["A"] or event.key == CurKeys["Menu"]:
+            if self._FootMsg[3] == "Back":
+                self.ReturnToUpLevelPage()
+                self._Screen.Draw()
+                self._Screen.SwapAndShow()
+            return
         
     def Draw(self):
         if self._DrawOnce == False: