Added example script : meshtastic_serial_message_reader.py

Author: henri

examples/meshtastic_serial_message_reader.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+#
+# Released Under GNU GPLv3
+# Copyright 2025 Henri Shustak
+#
+# About :
+#    This script will print messages as they arrive from a meshtastic node connected via serial port USB.
+#    If you have multiple nodes attached, you will need to edit this script and specify the node to monitor.
+#    https://gist.github.com/henri/a6584d55813f971e5b1a4ee940c07d25
+#
+# Requirements : 
+#    You will need to install python meshtastic libraries : https://github.com/meshtastic/python
+#
+# Version History :
+#    1.0 - initial release
+#    1.1 - added support for sender id and bug fixs
+
+import time
+import meshtastic
+import meshtastic.serial_interface
+from pubsub import pub
+
+def onReceive(packet, interface):
+    # DEBUGGING
+    # print(f"message arrived")
+    # print(f"{packet}")
+    try:
+        if packet['decoded']['portnum'] == 'TEXT_MESSAGE_APP':
+            message = packet['decoded']['text']
+            channel_num = packet['channel']
+            sender_id = packet['fromId']
+            print(f"{channel_num} : {sender_id}  :  {message}")
+    except KeyError as e:
+        print(f"unable to decode message")
+        return
+
+#pub.subscribe(onReceive, "meshtastic.receive.text")
+pub.subscribe(onReceive, "meshtastic.receive")
+
+# try to find a meshtastic device, otherwise provide a device path like /dev/ttyUSB0
+interface = meshtastic.serial_interface.SerialInterface()
+
+while True:
+    time.sleep(10)  # wait for the next message
+