fix bug

Author: anla-xu

pymycobot/common.py

@@ -498,14 +498,14 @@ def _process_received(self, data, genre, arm=6):
                     res.append(self._decode_int16(one))
                     i+=2
             return res
-        elif data_len == 34:
+        elif data_len == 38:
             i = 0
             res = []
             while i < data_len:
-                if i < 10 or i >= 26:
+                if i < 10 or i >= 30:
                     res.append(valid_data[i])
                     i+=1
-                elif i < 26:
+                elif i < 38:
                     one = valid_data[i : i + 2]
                     res.append(self._decode_int16(one))
                     i+=2