umnp-daq: improve output

umnp-daq.py

+import datetime
 import socket
 
 from umnp.microcontroller.devices.network.udp import DEFAULT_UMNP_DATA_IN_PORT
@@ -8,9 +9,11 @@ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 sock.bind(("0.0.0.0", DEFAULT_UMNP_DATA_IN_PORT))
 
+print("receive-time,sender-id,T,rH,p,T(p)")
 while True:
     data, addr = sock.recvfrom(2048)
 
     msg = Message.from_bytes(data)
+    now = datetime.datetime.now(tz=datetime.timezone.utc)
     if isinstance(msg, DataMessage):
-        print(msg.sender_id, msg.payload())
+        print(f"{now},{msg.sender_id},{msg.payload()}")