diff --git a/python/protmcu.py b/python/protmcu.py
index fa8e670..5b5264e 100644
--- a/python/protmcu.py
+++ b/python/protmcu.py
@@ -35,7 +35,9 @@ class protm:
         self.is_big_data=False
         self.num_to_recv=0
         self.recv_data=bytearray()
-        self.ser = serial.Serial(port=com, baudrate=115200,bytesize=serial.EIGHTBITS,parity=serial.PARITY_NONE,
+        self.com=com
+    def init(self):
+        self.ser = serial.Serial(port=self.com, baudrate=115200,bytesize=serial.EIGHTBITS,parity=serial.PARITY_NONE,
             stopbits=serial.STOPBITS_ONE,timeout=None)
     def encode(self,data:bytearray):
         t=bytearray()
@@ -130,6 +132,9 @@ class protm:
 
 
 u=protm("com5")
-u.start_recv()
-u.wait()
-
+# u.start_recv()
+# u.wait()
+u.cmd=1
+u.addr=1
+u.host_addr=0
+print(u.encode(bytearray()).hex(","))