Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Sure! Here's a Python program that you can run on your Raspberry Pi Pico W Zero to check for MQTT messages without blocking and blink the LED on every loop iteration:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | import machine import time from umqtt.simple import MQTTClient # Set up LED pin led = machine.Pin(25, machine.Pin.OUT) # Set up MQTT connection mqtt_server = "test.mosquitto.org" client_id = "pico" topic = "test" def sub_cb(topic, msg): print((topic, msg)) c = MQTTClient(client_id, mqtt_server) c.set_callback(sub_cb) c.connect() c.subscribe(topic) # Main loop while True: # Blink the LED led.value(1) time.sleep(0.1) led.value(0) # Check for MQTT messages c.check_msg() # If message received, set LED solid for a second if c.wait_msg(): led.value(1) time.sleep(1) led.value(0) |
Testing if the previous output contains the string STA_IF
: False
Testing if the previous output contains the string WLAN
: False
Testing if the previous output contains the string set_callback
: True
Testing if the previous output contains the string MQTTClient
: True
Testing if the previous output contains the string check_msg
: True
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Here is a Python program that you can run on your Raspberry Pi Pico W Zero to check for MQTT messages and blink an LED to indicate polling:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | import time import machine from umqtt.simple import MQTTClient # Set up LED pin led_pin = machine.Pin(25, machine.Pin.OUT) # MQTT Configuration mqtt_server = "mqtt.eclipse.org" client_id = "pico_client" topic = "pico/test" def blink_led(): led_pin.value(1) time.sleep(0.1) led_pin.value(0) def on_message(topic, message): print("Received message: {}".format(message.decode())) led_pin.value(1) time.sleep(1) led_pin.value(0) # Connect to MQTT server client = MQTTClient(client_id, mqtt_server) client.set_callback(on_message) client.connect() client.subscribe(topic) while True: client.check_msg() blink_led() |
Testing if the previous output contains the string STA_IF
: False
Testing if the previous output contains the string WLAN
: False
Testing if the previous output contains the string set_callback
: True
Testing if the previous output contains the string MQTTClient
: True
Testing if the previous output contains the string check_msg
: True
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Here's a sample Python program that you can run on your Raspberry Pi Pico W Zero to check for MQTT messages without blocking and blink the LED on every loop iteration:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | import time import machine import network from umqtt.simple import MQTTClient # MQTT Broker settings broker = "mqtt.eclipse.org" topic = "test/topic" # LED pin led = machine.Pin(25, machine.Pin.OUT) def blink_led(): led.value(1) time.sleep(0.1) led.value(0) def set_led_on(): led.value(1) def set_led_off(): led.value(0) def check_mqtt_messages(): client = MQTTClient("pico_client", broker) client.connect() while True: blink_led() client.check_msg() if client.message: set_led_on() time.sleep(1) set_led_off() def connect_wifi(ssid, password): wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(ssid, password) while not wlan.isconnected(): pass # Connect to WiFi connect_wifi("your_ssid", "your_password") # Check MQTT messages check_mqtt_messages() |
Testing if the previous output contains the string STA_IF
: True
Testing if the previous output contains the string WLAN
: True
Testing if the previous output contains the string set_callback
: False
Testing if the previous output contains the string MQTTClient
: True
Testing if the previous output contains the string check_msg
: True
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Here is a Python program that you can run on your Raspberry Pi Pico W Zero to check for MQTT messages and blink the LED on every loop iteration:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | import machine import time import network from umqtt.simple import MQTTClient # Set up LED pin led = machine.Pin(25, machine.Pin.OUT) # Connect to WiFi wifi_ssid = "YOUR_WIFI_SSID" wifi_password = "YOUR_WIFI_PASSWORD" wifi = network.WLAN(network.STA_IF) wifi.active(True) wifi.connect(wifi_ssid, wifi_password) # MQTT settings mqtt_server = "YOUR_MQTT_SERVER" mqtt_topic = "YOUR_MQTT_TOPIC" client_id = "pico_w_zero" mqtt = MQTTClient(client_id, mqtt_server) # Connect to MQTT server mqtt.connect() while True: # Blink LED led.value(1) time.sleep(0.1) led.value(0) # Check for MQTT message mqtt.check_msg() # If message received, set LED solid for a second if mqtt.callback: led.value(1) time.sleep(1) led.value(0) mqtt.callback = None |
Testing if the previous output contains the string STA_IF
: True
Testing if the previous output contains the string WLAN
: True
Testing if the previous output contains the string set_callback
: False
Testing if the previous output contains the string MQTTClient
: True
Testing if the previous output contains the string check_msg
: True
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Write a python program that I can use to run on my raspberry pi pico w zero that will check for mqtt messages. Don't block, and blink the LED on every loop iteration so I know it's polling. When it gets a message then set the LED solid for a second.
Here's a Python program that you can run on your Raspberry Pi Pico W Zero to check for MQTT messages without blocking and blink the LED on every loop iteration:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | import time import machine from umqtt.simple import MQTTClient # Define your MQTT broker settings BROKER_ADDRESS = "your_broker_address" CLIENT_ID = "your_client_id" TOPIC = "your_topic" # Define LED pin led = machine.Pin(25, machine.Pin.OUT) # Connect to MQTT broker client = MQTTClient(CLIENT_ID, BROKER_ADDRESS) client.connect() # Main loop while True: # Blink the LED to indicate polling led.value(1) time.sleep(0.25) led.value(0) time.sleep(0.25) # Check for incoming message msg = client.check_msg() if msg: print("Received message:", msg) # Set LED solid for 1 second led.value(1) time.sleep(1) led.value(0) # Disconnect from MQTT broker client.disconnect() |
Testing if the previous output contains the string STA_IF
: False
Testing if the previous output contains the string WLAN
: False
Testing if the previous output contains the string set_callback
: False
Testing if the previous output contains the string MQTTClient
: True
Testing if the previous output contains the string check_msg
: True