Merge pull request #51 from bobjacobsen/add-close

Add close() method to TCP, USB connections

openlcb/canbus/seriallink.py

@@ -65,3 +65,7 @@ def receive(self):
             if 0x3B in chunk:
                 break
         return (b''.join(chunks)).decode("utf-8")
+
+    def close(self): 
+        self.port.close()
+        return

openlcb/tcplink/tcpsocket.py

@@ -50,3 +50,7 @@ def receive(self):
         if chunk == b'':
             raise RuntimeError("socket connection broken")
         return list(chunk)  # convert from bytes
+
+    def close(self): 
+        self.sock.close()
+        return