Initial Query

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.

LLM Generation

Query

Output

To achieve what you're asking for, you'll need to utilize the Pico W's built-in LED and its networking capabilities to connect to an MQTT broker for message subscriptions. For this example, I'll assume you're familiar with basic setup and have already configured your Raspberry Pi Pico W for Python development with necessary libraries installed. You'll need the `umqtt.simple` library for MQTT communication and `machine` for controlling the LED and handling the non-blocking loop. If you haven't installed `umqtt.simple`, you might need to do so by copying the library to your Pico. Here's a basic script to get you started:

import machine
import time
import network
from umqtt.simple import MQTTClient
import ubinascii

# CONFIGURATION
WIFI_SSID = 'your_wifi_ssid'
WIFI_PASSWORD = 'your_wifi_password'
MQTT_BROKER = 'your_mqtt_broker_address'
MQTT_TOPIC = 'your/subscribe/topic'
CLIENT_ID = ubinascii.hexlify(machine.unique_id())  # Unique client ID

# LED setup
led = machine.Pin("LED", machine.Pin.OUT)

# WiFi connection
def connect_wifi(ssid, password):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('Connecting to network...')
        wlan.connect(ssid, password)
        while not wlan.isconnected():
            pass
    print('Network config:', wlan.ifconfig())

# Connect to WiFi
connect_wifi(WIFI_SSID, WIFI_PASSWORD)

# Callback function for when a message is received
def on_message(topic, msg):
    print((topic, msg))
    led.value(1)
    time.sleep(1)
    led.value(0)

# Setup MQTT client and set callback
client = MQTTClient(CLIENT_ID, MQTT_BROKER)
client.set_callback(on_message)

# Connect to MQTT broker
client.connect()
client.subscribe(MQTT_TOPIC)

print("Connected to %s, subscribed to %s topic" % (MQTT_BROKER, MQTT_TOPIC))

try:
    while True:
        led.toggle()  # Blink LED to indicate it's running
        client.check_msg()  # Non-blocking check for MQTT message
        time.sleep(0.1)  # Short delay to make LED blink visible
except KeyboardInterrupt:
    client.disconnect()

### Notes: - Replace `'your_wifi_ssid'`, `'your_wifi_password'`, `'your_mqtt_broker_address'`, and `'your/subscribe/topic'` with your WiFi credentials, MQTT broker address, and topic you wish to subscribe to. - This script attempts to connect to the WiFi and MQTT broker at startup. Ensure your Pico W can successfully connect to your WiFi network and that the MQTT broker address and topic are correctly specified. - The `on_message` callback function is triggered upon receiving a message for the subscribed topic. It turns the LED on for 1 second and then turns it off. - The main loop blinks the LED and checks for MQTT messages in a non-blocking manner (`client.check_msg()`). - If you encounter any errors or the `umqtt.simple` library is missing, you may need to download it and copy it to your device. Instructions for this can be found in various online resources or the official MicroPython documentation. This script provides a simple foundation. Depending on your project's requirements, you might need to adjust WiFi/MQTT reconnect logic or message handling for robustness.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: True

Substring Evaluation

Testing if the previous output contains the string WLAN: True

Substring Evaluation

Testing if the previous output contains the string set_callback: True

Substring Evaluation

Testing if the previous output contains the string MQTTClient: True

Substring Evaluation

Testing if the previous output contains the string check_msg: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

To create a Python program for your Raspberry Pi Pico W Zero that checks for MQTT messages without blocking, blinks an LED on every loop iteration to indicate it's polling, and sets the LED solid for a second upon receiving a message, you need to use the `umqtt.simple` library for MQTT communication and the `machine` library for controlling the LED. This example assumes you have a basic understanding of how to set up and use MQTT and that you have an MQTT broker available. First, ensure you have the necessary libraries on your Raspberry Pi Pico W Zero. You might need to download `umqtt.simple` and transfer it to your device if it's not already there. Here's a basic outline of what the script will do: 1. Connect to WiFi. 2. Connect to the MQTT broker. 3. Subscribe to a topic. 4. Poll for messages without blocking. 5. Blink the LED on each loop iteration. 6. When a message is received, set the LED solid for a second.

import machine
import time
from umqtt.simple import MQTTClient
import network

# Configure the onboard LED
led = machine.Pin("LED", machine.Pin.OUT)

# WiFi connection information
WIFI_SSID = 'YourSSID'
WIFI_PASSWORD = 'YourPassword'

# MQTT information
MQTT_BROKER = 'your.mqtt.broker.ip'
MQTT_TOPIC = 'your/topic'

# Connect to WiFi
def connect_wifi(ssid, password):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('connecting to network...')
        wlan.connect(ssid, password)
        while not wlan.isconnected():
            pass
    print('network config:', wlan.ifconfig())

# MQTT callback function
def on_message(topic, msg):
    print((topic, msg))
    led.on()  # Turn on LED solidly
    time.sleep(1)
    led.off()

# Setup and connect to MQTT broker
def setup_mqtt():
    client = MQTTClient("pico_w", MQTT_BROKER)
    client.set_callback(on_message)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    print(f"Connected to {MQTT_BROKER}, subscribed to {MQTT_TOPIC} topic")
    return client

def check_for_message(client):
    try:
        client.check_msg()
    except:
        print("Failed to check for message")
        time.sleep(1)

def main():
    connect_wifi(WIFI_SSID, WIFI_PASSWORD)
    mqtt_client = setup_mqtt()
    
    while True:
        check_for_message(mqtt_client)
        led.toggle()  # Blink LED on each loop iteration
        time.sleep(0.1)  # Short sleep to make the blink noticeable

# Run the main function
if __name__ == "__main__":
    main()

Replace `YourSSID`, `YourPassword`, `your.mqtt.broker.ip`, and `your/topic` with your actual WiFi SSID, WiFi password, MQTT broker IP address, and MQTT topic. This code will continuously poll for MQTT messages without blocking the main loop, allowing the LED to blink on each iteration. When a message is received, the `on_message` callback function is called, which turns the LED on solid for one second. Please note that you'll need to have the `umqtt.simple` library available on your Raspberry Pi Pico W Zero, along with setting the correct LED pin for your specific board if "LED" is not correct. Additionally, ensure your device is correctly set up for networking with MicroPython.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: True

Substring Evaluation

Testing if the previous output contains the string WLAN: True

Substring Evaluation

Testing if the previous output contains the string set_callback: True

Substring Evaluation

Testing if the previous output contains the string MQTTClient: True

Substring Evaluation

Testing if the previous output contains the string check_msg: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

To achieve the behavior you're asking for on a Raspberry Pi Pico W with an MQTT setup, you'll need to install MicroPython firmware on your Pico W if you haven't already done so. After that, you can use the `umqtt.simple` library for MQTT communications. Here's a basic program that does what you're asking. This example assumes that you have a basic understanding of how to deploy and run MicroPython code on your Raspberry Pi Pico W. First, ensure you've configured your Pico W for internet access and installed any necessary libraries. **MQTT LED Blinker Program for Raspberry Pi Pico W:**

import machine
import utime
from umqtt.simple import MQTTClient
import network
import ubinascii

# Configure your WiFi credentials
WIFI_SSID = 'your_wifi_ssid'
WIFI_PASSWORD = 'your_wifi_password'

# MQTT server details
MQTT_SERVER = 'your_mqtt_server'
MQTT_PORT = 1883  # Default MQTT port
MQTT_TOPIC = 'your_mqtt_topic'

# Unique client ID
CLIENT_ID = ubinascii.hexlify(machine.unique_id())

# LED setup
led = machine.Pin("LED", machine.Pin.OUT)

# Connect to WiFi
def connect_wifi(ssid, password):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('Connecting to network...')
        wlan.connect(ssid, password)
        while not wlan.isconnected():
            pass
    print('Network config:', wlan.ifconfig())

# Handle receiving messages
def on_message(topic, msg):
    print((topic, msg))
    led.value(1)
    utime.sleep(1)
    led.value(0)

def main():
    connect_wifi(WIFI_SSID, WIFI_PASSWORD)
    
    client = MQTTClient(CLIENT_ID, MQTT_SERVER, port=MQTT_PORT)
    client.set_callback(on_message)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    
    print('Connected to %s MQTT broker, subscribed to %s topic' % (MQTT_SERVER, MQTT_TOPIC))
    
    try:
        while True:
            # Non-blocking wait for message
            client.check_msg()
            
            # Blink LED to indicate polling
            led.toggle()
            utime.sleep(0.5)  # Adjust sleep time as needed for faster or slower polling
            
    finally:
        client.disconnect()

if __name__ == "__main__":
    main()

This program will: 1. Connect to your Wi-Fi network. 2. Connect to the MQTT server and subscribe to a specific topic. 3. Check for messages in a non-blocking loop and blink the LED on each loop iteration. 4. When a message is received, the LED turns on for 1 second, then goes back to blinking with each loop iteration. Make sure to replace `'your_wifi_ssid'`, `'your_wifi_password'`, `'your_mqtt_server'`, and `'your_mqtt_topic'` with your actual WiFi and MQTT details. **Important Notes:** - Ensure you have the necessary libraries (`umqtt.simple`, `network`, `machine`, etc.) available on your Pico. You may need to upload these libraries to your Pico W if they're not already present. - Adjust `utime.sleep(0.5)` in the loop for blinking speed as needed. - The Pico W's onboard LED might be accessed differently depending on your setup or firmware version. Adjust the `machine.Pin("LED", machine.Pin.OUT)` line if needed. - This example assumes you're using a standard MQTT setup without SSL/TLS. For secure MQTT (MQTT over TLS), additional steps are required.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: True

Substring Evaluation

Testing if the previous output contains the string WLAN: True

Substring Evaluation

Testing if the previous output contains the string set_callback: True

Substring Evaluation

Testing if the previous output contains the string MQTTClient: True

Substring Evaluation

Testing if the previous output contains the string check_msg: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

For this task, you will need the following setup: 1. **Raspberry Pi Pico W Zero** properly configured and connected to your computer. 2. **Thonny Python IDE** or any other compatible IDE for coding and uploading the script to your Pico W. 3. **Mosquitto** or another MQTT broker running either locally on your network or an online service. 4. **umqtt.simple** library for MQTT communication on the Pico W. First, ensure your Pico W is connected to your WiFi network. If you haven't done this before, you'll need to set up the network credentials on your device. Then, let's dive into the steps and the code: ### Step 1: Install MicroPython on Raspberry Pi Pico W Make sure your Pico W is running MicroPython. You can download the latest version from the official Raspberry Pi website and follow their guide to install it. ### Step 2: Prepare Your Environment Open Thonny or your preferred IDE, select MicroPython (Raspberry Pi Pico) as the interpreter, and connect to your device. ### Step 3: Install umqtt.simple You may need to install the `umqtt.simple` library manually if it's not included in your MicroPython build. You can download it from the official GitHub repository ([micropython-lib](https://github.com/micropython/micropython-lib)) and upload it to your Pico W. ### Step 4: Write the Program Copy the following Python script into your IDE. Make sure to replace `'ssid'`, `'password'`, `'mqtt_broker'`, `'topic'` with your actual WiFi SSID, WiFi password, MQTT broker address, and the topic you're subscribing to.

import machine
import time
from umqtt.simple import MQTTClient
import network

# Configuration
WIFI_SSID = 'your_wifi_ssid'
WIFI_PASS = 'your_wifi_password'
MQTT_BROKER = 'your_mqtt_broker_address'
MQTT_TOPIC = 'your/topic'

# Setup WiFi
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(WIFI_SSID, WIFI_PASS)

# Wait for connection
while not wlan.isconnected():
    machine.idle()  # Save power while waiting

print("Connected to WiFi")

# Setup LED
led = machine.Pin("LED", machine.Pin.OUT)

# MQTT Callback Function
def sub_cb(topic, msg):
    print((topic, msg))
    led.value(1)
    time.sleep(1)
    led.value(0)

# Setup MQTT Client
client = MQTTClient("pico_w", MQTT_BROKER)
client.set_callback(sub_cb)
client.connect()
client.subscribe(MQTT_TOPIC)

print("Connected to MQTT Broker and Subscribed to topic")

# Main loop
while True:
    led.toggle()
    client.check_msg()  # Non-blocking check for MQTT message
    time.sleep(0.1)  # Small delay to see the LED blinking

### Step 5: Run Your Script Save the script to your Pico W and run it. The LED on your Pico W should start blinking, indicating that it's polling for messages. When a message is published to your subscribed topic, the LED should stay lit for a second before resuming the blinking pattern. ### Troubleshooting - Ensure your Pico W's firmware is up to date and supports networking. - Verify that your MQTT broker is accessible from the Pico W. You might need to adjust firewall settings or use a public broker for testing. - If you encounter import errors with `umqtt.simple`, make sure the library is correctly installed on your Pico W. This script provides a basic example of non-blocking MQTT message polling. You can extend its functionality by modifying the callback function to perform different actions based on the received messages.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: True

Substring Evaluation

Testing if the previous output contains the string WLAN: True

Substring Evaluation

Testing if the previous output contains the string set_callback: True

Substring Evaluation

Testing if the previous output contains the string MQTTClient: True

Substring Evaluation

Testing if the previous output contains the string check_msg: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

To accomplish this task on a Raspberry Pi Pico W with a MicroPython firmware, you'll need to use the `umqttsimple` library for MQTT and the `machine` module to control the onboard LED. Note that you'll first need to connect your Raspberry Pi Pico W to a WiFi network and have an MQTT broker running that it can connect to. Below is a simple example Python program that implements the functionality you've described. This program: 1. Connects to an MQTT broker. 2. Subscribes to a topic. 3. Blinks the onboard LED on every loop iteration to indicate it's polling for messages. 4. When a message is received, it turns the LED on solidly for one second.

import machine
import utime
import ubinascii
from umqttsimple import MQTTClient
import network
import uasyncio as asyncio

# Configure your WiFi credentials
WIFI_SSID = 'your_wifi_ssid'
WIFI_PASSWORD = 'your_wifi_password'

# MQTT Broker settings
MQTT_BROKER = 'broker.hivemq.com'
MQTT_PORT = 1883
MQTT_TOPIC = 'your/topic'

# Unique client ID for MQTT
CLIENT_ID = ubinascii.hexlify(machine.unique_id())

# LED setup
led = machine.Pin("LED", machine.Pin.OUT)

# Connect to WiFi
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('Connecting to network...')
        wlan.connect(WIFI_SSID, WIFI_PASSWORD)
        while not wlan.isconnected():
            pass
    print('Network config:', wlan.ifconfig())

# MQTT callback function
def mqtt_callback(topic, msg):
    print((topic, msg))
    led.on()
    utime.sleep(1)
    led.off()

# MQTT connect
def connect_mqtt():
    client = MQTTClient(CLIENT_ID, MQTT_BROKER, port=MQTT_PORT)
    client.set_callback(mqtt_callback)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    print('Connected to %s MQTT broker, subscribed to %s topic' % (MQTT_BROKER, MQTT_TOPIC))
    return client

# Async loop to check messages
async def mqtt_check_loop(client):
    while True:
        client.check_msg()
        led.toggle()
        await asyncio.sleep(0.1)  # Blink LED without blocking

# Main function
async def main():
    connect_wifi()
    client = connect_mqtt()
    asyncio.create_task(mqtt_check_loop(client))

    while True:
        await asyncio.sleep(1)

try:
    asyncio.run(main())
except KeyboardInterrupt:
    print('Interrupted')
finally:
    asyncio.new_event_loop()  # Reset event loop in case of interruption

Make sure to replace `'your_wifi_ssid'`, `'your_wifi_password'`, `'broker.hivemq.com'`, and `'your/topic'` with your actual WiFi SSID, WiFi password, MQTT broker address, and MQTT topic you want to subscribe to. This program uses `uasyncio` for asynchronous operations, allowing it to blink the LED without blocking the main loop while it waits for MQTT messages. When a message is received, the `mqtt_callback` function is invoked, and the LED stays on for one second. You will also need the `umqttsimple.py` file in your Raspberry Pi Pico W, as it's not part of the standard MicroPython library. You can find a simple version of this library in various MicroPython projects online or adapt an existing MQTT library to work with `uasyncio` if necessary.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: True

Substring Evaluation

Testing if the previous output contains the string WLAN: True

Substring Evaluation

Testing if the previous output contains the string set_callback: True

Substring Evaluation

Testing if the previous output contains the string MQTTClient: True

Substring Evaluation

Testing if the previous output contains the string check_msg: True