Init

tests/mqtt/micropython_example.py

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+"""Small MicroPython MQTT example for ESP32.
+
+Edit BROKER_HOST so it points to the broker machine IP address.
+Do not use localhost from the ESP32.
+"""
+
+from shared.mqtt import BrokerClient
+
+
+BROKER_HOST = "192.168.50.1"
+TOPIC = b"smartwave/demo"
+CA_FILE = "/certs/ca.crt"
+
+
+def on_message(message):
+    print("received:", message)
+
+
+def main():
+    client = BrokerClient(
+        host=BROKER_HOST,
+        client_id="smartwave-esp32-demo",
+        use_tls=True,
+        cafile=CA_FILE,
+        keepalive=30,
+    )
+
+    client.set_callback(on_message)
+    client.connect()
+    client.subscribe(TOPIC, qos=2)
+    client.publish(TOPIC, b"hello from MicroPython", qos=2, retain=False)
+
+    for _ in range(30):
+        client.poll()
+
+    client.close()
+
+
+main()