fix get_angles_coords bug

Author: anla-xu

pymycobot/common.py

@@ -464,7 +464,18 @@ def _process_received(self, data, genre, arm=6):
         elif data_len == 28:
             for i in range(0, data_len, 4):
                 byte_value = int.from_bytes(valid_data[i:i+4], byteorder='big', signed=True)
-                res.append(byte_value)
+                res.append(byte_value) 
+        elif data_len == 40:
+            i = 0
+            while i < data_len:
+                if i < 28:
+                    byte_value = int.from_bytes(valid_data[i:i+4], byteorder='big', signed=True)
+                    res.append(byte_value) 
+                    i+=4
+                else:
+                    one = valid_data[i : i + 2]
+                    res.append(self._decode_int16(one))
+                    i+=2
         elif data_len == 30:
             i = 0
             res = []