- ChatGPT
- Creating a publisher and subscriber program in Python for a Jetson Nano involves using a messaging protocol like MQTT (Message Queuing Telemetry Transport) due to its lightweight nature, which is suitable for embedded systems like the Jetson Nano. Here’s a basic example using the popular MQTT library paho-mqtt:
- Requirements
- Before you start, you need to have paho-mqtt installed on your Jetson Nano. You can install it using pip:
- ----------------------------------------------------------------
- bash
- pip install paho-mqtt
- ---------------------------------------------------
- Publisher Example
- import time
- import paho.mqtt.client as mqtt
- # MQTT broker address
- broker_address = "your_broker_address" # Replace with your MQTT broker's address
- # Create a client instance
- client = mqtt.Client("PublisherClient")
- # Connect to broker
- client.connect(broker_address)
- # Publish messages every 1 second
- while True:
- message = "Hello from Jetson Nano!"
- client.publish("topic/jetson", message)
- print(f"Message sent: {message}")
- time.sleep(1)
- ---------------------------------------------------------------------------------------
- Subscriber Example
- import paho.mqtt.client as mqtt
- # MQTT broker address
- broker_address = "your_broker_address" # Replace with your MQTT broker's address
- # Callback when the client receives a CONNACK response from the server.
- def on_connect(client, userdata, flags, rc):
- print(f"Connected with result code {rc}")
- # Subscribe to the topic
- client.subscribe("topic/jetson")
- # Callback when a message is received from the server.
- def on_message(client, userdata, msg):
- print(f"Received message: {msg.payload.decode()}")
- # Create a client instance
- client = mqtt.Client("SubscriberClient")
- # Assign callbacks
- client.on_connect = on_connect
- client.on_message = on_message
- # Connect to broker
- client.connect(broker_address)
- # Blocking loop to receive messages
- client.loop_forever()
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