fix bug

Author: anla-xu

pymycobot/mecharmsocket.py

@@ -87,6 +87,8 @@ def _mesg(self, genre, *args, **kwargs):
             if genre == ProtocolCode.SET_SSID_PWD:
                 return None
             res = self._process_received(data, genre)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.IS_POWER_ON,

pymycobot/mercury.py

@@ -50,6 +50,8 @@ def _mesg(self, genre, *args, **kwargs):
             if genre == ProtocolCode.SET_SSID_PWD:
                 return None
             res = self._process_received(data, genre, 14)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.GET_ROBOT_ID,

pymycobot/myarm.py

@@ -86,6 +86,8 @@ def _mesg(self, genre, *args, **kwargs):
         if has_reply:
             data = self._read(genre, command=command)
             res = self._process_received(data, genre, arm=7)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.GET_ROBOT_ID,

pymycobot/myarmsocket.py

@@ -87,6 +87,8 @@ def _mesg(self, genre, *args, **kwargs):
             if genre == ProtocolCode.SET_SSID_PWD:
                 return None
             res = self._process_received(data, genre)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.IS_POWER_ON,

pymycobot/mybuddy.py

@@ -136,6 +136,8 @@ def _mesg(self, genre, *args, **kwargs):
         if has_reply:
             data = self._read()
             res = self._process_received(data, genre, arm=12)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.SOFTWARE_VERSION,

pymycobot/mybuddybluetooth.py

@@ -54,6 +54,8 @@ def _mesg(self, genre, *args, **kwargs):
 
         if data:
             res = self._process_received(data, genre, arm=12)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.SOFTWARE_VERSION,

pymycobot/mybuddysocket.py

@@ -97,6 +97,8 @@ def _mesg(self, genre, *args, **kwargs):
         if has_reply:
             data = self._read(genre, 'socket')
             res = self._process_received(data, genre, arm=12)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.IS_POWER_ON,

pymycobot/mycobot.py

@@ -99,6 +99,10 @@ def _res(self, real_command, has_reply, genre):
             if genre == ProtocolCode.SET_SSID_PWD:
                 return None
             res = self._process_received(data, genre)
+            if res == []:
+                return None
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.GET_ROBOT_ID,

pymycobot/mycobotsocket.py

@@ -88,6 +88,8 @@ def _mesg(self, genre, *args, **kwargs):
             if genre == ProtocolCode.SET_SSID_PWD:
                 return None
             res = self._process_received(data, genre)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.IS_POWER_ON,

pymycobot/mypalletizer.py

@@ -125,6 +125,8 @@ def _mesg(self, genre, *args, **kwargs):
             data = self._read(genre)
             # print(data)
             res = self._process_received(data, genre)
+            if res == []:
+                return None
             if genre in [
                 ProtocolCode.ROBOT_VERSION,
                 ProtocolCode.SOFTWARE_VERSION,