Added Lab 10 file

Lab10/MicroPython/Code/ReadFeedLED2.py

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+import network
+import time
+from umqtt.simple import MQTTClient
+import secrets
+
+# Global variable
+tsetting = False
+last_tsetting = None  # Track changes
+
+# WiFi setup
+def connect_wifi():
+    wlan = network.WLAN(network.STA_IF)
+    wlan.active(True)
+    wlan.connect(secrets.WIFI_SSID, secrets.WIFI_PASSWORD)
+
+    print("Connecting to WiFi...")
+    while not wlan.isconnected():
+        time.sleep(1)
+
+    print("Connected:", wlan.ifconfig())
+
+# MQTT callback
+def message_callback(topic, msg):
+    topic = topic.decode()
+    msg = msg.decode()
+
+    print("Received:", topic, msg)
+
+    if topic.endswith("/mytemperaturesetting"):
+        try:
+            value = int(msg)
+            print("temperaturesetting value:", value)
+        except:
+            print("Invalid temperaturesetting value")
+
+    elif topic.endswith("/led"):
+        print("LED command:", msg)
+
+# MQTT setup
+def connect_mqtt():
+    client_id = "picoW-client"
+    broker = "io.adafruit.com"
+    port = 1883
+
+    username = secrets.AIO_USERNAME
+    password = secrets.AIO_KEY
+
+    client = MQTTClient(client_id, broker, port=port,
+                        user=username, password=password)
+
+    client.set_callback(message_callback)
+    client.connect()
+
+    # Feed paths
+    temperaturesetting_feed = f"{username}/feeds/mytemperaturesetting"
+    led_feed = f"{username}/feeds/led"
+
+    # Subscribe
+    client.subscribe(temperaturesetting_feed)
+    client.subscribe(led_feed)
+
+    print("Subscribed to feeds")
+    return client, led_feed
+
+# Publish function
+def publish_led(client, led_feed, value):
+    msg = "ON" if value else "OFF"
+    client.publish(led_feed, msg)
+    print("Published to LED feed:", msg)
+
+# Main loop
+def main():
+    global tsetting, last_tsetting
+
+    connect_wifi()
+    client, led_feed = connect_mqtt()
+
+    print("Running...")
+
+    while True:
+        client.check_msg()
+
+        # 🔁 Example: toggle tsetting every 10 seconds (replace with real logic)
+#        if int(time.time()) % 10 == 0:
+#            tsetting = not tsetting
+
+        # ✅ Only publish if value changed
+        if tsetting != last_tsetting:
+            publish_led(client, led_feed, tsetting)
+            last_tsetting = tsetting
+
+        time.sleep(2)
+
+# Run
+main()