update readme

README.md

@@ -1 +1,19 @@
-TODO
+This project is useful for testing Meshtastic networks connected to an MQTT server. Functions can be called in mqttc.py or by using arguments in the command line.
+
+
+Available arguments:
+
+```
+  -h, --help             show this help message and exit
+  --config CONFIG        Path to the config file
+  --message MESSAGE      The message to send
+  --lat LAT              Latitude coordinate
+  --lon LON              Longitude coordinate
+  --alt ALT              Altitude
+  --precision PRECISION  Position Precision```
+
+Example:
+
+To publish a message to the broker using settings defined in config.json:
+``` python3 mqttc.py --message "I need an Alpinist"```
+

tx_message_handler.py

@@ -36,10 +36,9 @@ def generate_mesh_packet(encoded_message):
     global message_id
     message_id = get_message_id(message_id)
 
-    node_number = int(config.node.id.replace("!", ""), 16)
     mesh_packet = mesh_pb2.MeshPacket()
     mesh_packet.id = message_id
-    setattr(mesh_packet, "from", node_number)
+    setattr(mesh_packet, "from", config.node.number)
     mesh_packet.to = config.destination_id
     mesh_packet.want_ack = False
     mesh_packet.channel = generate_hash(config.channel.preset, config.channel.key)