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 create a Python program that runs on a Raspberry Pi Pico W Zero and checks for MQTT messages without blocking, while blinking the LED on each loop iteration and setting the LED solid for a second when a message is received, you can use the `umqtt.simple` library for MQTT and the `machine` library for controlling the LED. Here's a complete example:

import time
import machine
from umqtt.simple import MQTTClient

# MQTT Configuration
MQTT_BROKER = 'your_mqtt_broker_address'
MQTT_TOPIC = 'your/topic'
CLIENT_ID = 'pico_client'

# Setup LED
led = machine.Pin(25, machine.Pin.OUT)

# Callback function to handle received messages
def mqtt_callback(topic, msg):
    print(f"Received message: {msg} on topic: {topic}")
    # Set LED solid for a second when a message is received
    led.on()
    time.sleep(1)
    led.off()

# Connect to MQTT Broker
client = MQTTClient(CLIENT_ID, MQTT_BROKER)
client.set_callback(mqtt_callback)
client.connect()
client.subscribe(MQTT_TOPIC)

try:
    while True:
        # Check for new messages (non-blocking)
        client.check_msg()

        # Blink LED to indicate polling
        led.on()
        time.sleep(0.1)
        led.off()
        time.sleep(0.1)

except KeyboardInterrupt:
    print("Exiting...")
finally:
    client.disconnect()

### Explanation: 1. **MQTT Configuration**: - Replace `'your_mqtt_broker_address'` with the address of your MQTT broker. - Replace `'your/topic'` with the MQTT topic you want to subscribe to. - The `CLIENT_ID` should be a unique identifier for your MQTT client. 2. **Setup LED**: - The LED is connected to GPIO pin 25 on the Raspberry Pi Pico. 3. **Callback Function**: - The `mqtt_callback` function is called whenever a new message is received on the subscribed topic. 4. **MQTT Client Setup**: - The `MQTTClient` is initialized with the client ID and broker address. - The callback function is set using `client.set_callback(mqtt_callback)`. - The client connects to the MQTT broker and subscribes to the specified topic. 5. **Main Loop**: - The loop continuously checks for new MQTT messages using `client.check_msg()`, which is non-blocking. - The LED blinks on each iteration to indicate polling. - When a message is received, the callback function turns the LED on for a second. ### Running the Program: 1. Save the code to a file named `mqtt_led.py` on your computer. 2. Use a tool like `mpremote` to upload the script to your Raspberry Pi Pico W Zero. 3. Run the script on the Pico W Zero. ### Dependencies: Make sure you have the `umqtt.simple` library installed. You can typically find this library in MicroPython distributions or install it using a package manager for MicroPython like `upip`.

Check if all of the following conditions are true:

Substring Evaluation

Testing if the previous output contains the string STA_IF: False

Substring Evaluation

Testing if the previous output contains the string WLAN: False

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: False

Initial Query

LLM Generation

Query

Output

To create a Python program for your Raspberry Pi Pico W that checks for MQTT messages without blocking and blinks the LED on every loop iteration, you can use the `umqtt.simple` module for MQTT communication and `machine` module to control the LED. Here's a simple example: 1. Ensure you have `umqtt.simple` installed on your Raspberry Pi Pico W. You may need to add it to your MicroPython environment if it's not already included. 2. Create a Python script with the following code:

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

# WiFi credentials
WIFI_SSID = "your_wifi_ssid"
WIFI_PASSWORD = "your_wifi_password"

# MQTT broker details
MQTT_BROKER = "your_mqtt_broker"
MQTT_CLIENT_ID = ubinascii.hexlify(machine.unique_id())
MQTT_TOPIC = b'your/topic'

# Initialize LED
led = Pin(25, Pin.OUT)

# Set up WiFi connection
def connect_wifi(ssid, password):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)
    
    while not wlan.isconnected():
        led.value(not led.value())
        time.sleep(0.5)
        
    print('Connected to WiFi')
    led.value(1)

# MQTT message callback
def mqtt_callback(topic, msg):
    print(f"Received message on topic {topic}: {msg}")
    led.value(1)
    time.sleep(1)
    led.value(0)

# Connect to WiFi
connect_wifi(WIFI_SSID, WIFI_PASSWORD)

# Create MQTT client and set callback
client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER)
client.set_callback(mqtt_callback)
client.connect()
client.subscribe(MQTT_TOPIC)

print(f"Connected to {MQTT_BROKER}, subscribed to {MQTT_TOPIC}")

# Main loop
try:
    while True:
        client.check_msg()
        
        # Blink LED to indicate polling
        led.value(not led.value())
        time.sleep(0.1)
        
except KeyboardInterrupt:
    print("Disconnecting from MQTT broker...")
    client.disconnect()
    led.value(0)
    print("Disconnected")

### Instructions: 1. Replace `your_wifi_ssid` and `your_wifi_password` with your actual WiFi credentials. 2. Replace `your_mqtt_broker` with the address of your MQTT broker. 3. Replace `your/topic` with the MQTT topic you want to subscribe to. ### Explanation: - **WiFi Connection**: The script connects to your WiFi network using provided credentials. - **MQTT Client**: The script sets up an MQTT client with a unique client ID, connects to the broker, and subscribes to the specified topic. - **LED Control**: The script blinks the onboard LED (GPIO 25) to indicate it's polling for MQTT messages. When a message is received, the LED stays solid for 1 second. - **Main Loop**: The `client.check_msg()` method is non-blocking and checks for incoming MQTT messages. The loop also includes a short sleep to avoid tight looping which can be resource-intensive. Upload this script to your Raspberry Pi Pico W and run it. The LED should blink continuously, and when an MQTT message is received, the LED will stay solid for one second.

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

Sure! Below is a Python program you can run on your Raspberry Pi Pico W Zero to check for MQTT messages, blink the LED on each loop iteration, and set the LED solid for a second upon receiving a message. This example uses the `umqtt.simple` library for MQTT communication and the `machine` library to control the LED. First, you need to install the necessary libraries if you haven't already. You can do this using the `upip` package manager:

import upip
upip.install('micropython-umqtt.simple')

Here's the complete code:

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

# Replace with your actual network credentials and MQTT broker details
SSID = 'your_wifi_ssid'
PASSWORD = 'your_wifi_password'
MQTT_BROKER = 'your_mqtt_broker_address'
MQTT_TOPIC = 'your_mqtt_topic'

# Set up the LED
led = machine.Pin(25, machine.Pin.OUT)

# Connect to Wi-Fi
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(SSID, PASSWORD)
    while not wlan.isconnected():
        time.sleep(1)
    print('Connected to WiFi:', wlan.ifconfig())

# Define the callback function for MQTT message reception
def message_callback(topic, msg):
    print('Received message:', msg)
    # Set LED solid for a second
    led.on()
    time.sleep(1)
    led.off()

# Connect to MQTT broker and subscribe to the topic
def connect_mqtt():
    client = MQTTClient('rpi_pico', MQTT_BROKER)
    client.set_callback(message_callback)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    print('Connected to MQTT Broker and subscribed to topic:', MQTT_TOPIC)
    return client

# Main loop
def main():
    connect_wifi()
    client = connect_mqtt()
    led_state = False
    while True:
        client.check_msg()  # Non-blocking check for messages
        # Blink LED
        led_state = not led_state
        led.value(led_state)
        time.sleep(0.5)

if __name__ == '__main__':
    main()

### Explanation - **Wi-Fi Connection:** The `connect_wifi()` function connects the Raspberry Pi Pico W Zero to your Wi-Fi network. - **MQTT Client Setup:** The `connect_mqtt()` function sets up the MQTT client, connects to the broker, and subscribes to your specified topic. - **Message Callback:** The `message_callback()` function is called whenever an MQTT message is received. It prints the message and sets the LED solid for one second. - **Main Loop:** The `main()` function continuously checks for new MQTT messages using `client.check_msg()` and blinks the LED to indicate polling. ### Instructions 1. Replace `SSID`, `PASSWORD`, `MQTT_BROKER`, and `MQTT_TOPIC` with your actual Wi-Fi credentials and MQTT broker details. 2. Upload this script to your Raspberry Pi Pico W Zero. 3. Run the script. You should see the LED blinking every half second, indicating that the script is actively polling for MQTT messages. When a message is received, the LED will stay solid for one second.

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

Sure! Below is a Python program you can run on your Raspberry Pi Pico W Zero to check for MQTT messages. This program uses the `umqtt.simple` library for MQTT communication and the `machine` library for controlling the LED. The LED will blink on every loop iteration to indicate polling, and it will stay solid for a second upon receiving a message. First, you'll need to install the necessary libraries. Make sure you have `umqtt.simple` and `machine` on your MicroPython environment. You can do this using the Thonny IDE or another method suitable for MicroPython. Here's the complete code:

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

# MQTT settings
MQTT_BROKER = "your_mqtt_broker_address"
MQTT_PORT = 1883
MQTT_TOPIC = b"your/mqtt/topic"

# WiFi settings
WIFI_SSID = "your_wifi_ssid"
WIFI_PASSWORD = "your_wifi_password"

# LED settings
LED_PIN = 25  # Adjust the pin number if necessary
led = machine.Pin(LED_PIN, machine.Pin.OUT)

# Connect to WiFi
def connect_wifi(ssid, password):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)
    while not wlan.isconnected():
        time.sleep(1)
    print("Connected to WiFi")

# Callback function to handle received MQTT messages
def mqtt_callback(topic, msg):
    print(f"Received message: {msg} on topic: {topic}")
    led.value(1)  # Turn on the LED
    time.sleep(1)
    led.value(0)  # Turn off the LED

# Connect to MQTT broker
def connect_mqtt():
    client = MQTTClient("pico_client", MQTT_BROKER, port=MQTT_PORT)
    client.set_callback(mqtt_callback)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    print("Connected to MQTT broker and subscribed to topic")
    return client

def main():
    connect_wifi(WIFI_SSID, WIFI_PASSWORD)
    client = connect_mqtt()

    try:
        while True:
            client.check_msg()  # Check for new MQTT messages (non-blocking)
            led.value(1)
            time.sleep(0.1)
            led.value(0)
            time.sleep(0.1)
    except KeyboardInterrupt:
        print("Program stopped")
    finally:
        client.disconnect()
        print("Disconnected from MQTT broker")

if __name__ == "__main__":
    main()

### Explanation: 1. **WiFi Connection**: The `connect_wifi` function connects to the specified WiFi network. 2. **MQTT Connection**: The `connect_mqtt` function connects to the MQTT broker and subscribes to the specified topic. 3. **MQTT Callback**: The `mqtt_callback` function is called whenever a new message is received on the subscribed topic. It turns the LED on for 1 second. 4. **Main Loop**: The main loop continuously checks for new MQTT messages in a non-blocking manner using `client.check_msg()`. The LED blinks on each loop iteration to indicate that the program is polling. ### Note: - Replace `"your_mqtt_broker_address"`, `"your_wifi_ssid"`, `"your_wifi_password"`, and `"your/mqtt/topic"` with your actual MQTT broker address, WiFi credentials, and topic. - Adjust the `LED_PIN` if the LED is connected to a different GPIO pin on your Raspberry Pi Pico W Zero. This program should suffice for your requirement. Make sure to test and debug as needed, especially for WiFi and MQTT connectivity issues.

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

Certainly! Below is a Python program that you can use on your Raspberry Pi Pico W to check for MQTT messages, blink the LED on each loop iteration, and set the LED solid for a second when a message is received. This example uses the `umqtt.simple` module for MQTT communication and `machine` module for controlling the LED. 1. First, you need to install the necessary libraries. If you haven't already done so, install MicroPython on your Raspberry Pi Pico W. Then, you can use a tool like `ampy` or `rshell` to transfer the code to your device. 2. Ensure you have an MQTT broker running; you can use a public broker like `test.mosquitto.org` for testing purposes. Here's the code:

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

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

# MQTT broker details
MQTT_BROKER = 'test.mosquitto.org'
MQTT_CLIENT_ID = ubinascii.hexlify(machine.unique_id())
MQTT_TOPIC = b'test/topic'

# Initialize LED
led = machine.Pin(25, machine.Pin.OUT)

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

# Callback function to handle received messages
def mqtt_callback(topic, msg):
    print(f"Message received on topic {topic}: {msg}")
    led.on()
    time.sleep(1)
    led.off()

# Connect to MQTT broker
def connect_mqtt():
    client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER)
    client.set_callback(mqtt_callback)
    client.connect()
    client.subscribe(MQTT_TOPIC)
    print(f'Connected to {MQTT_BROKER} and subscribed to {MQTT_TOPIC}')
    return client

def main():
    connect_wifi()
    client = connect_mqtt()
    last_blink_time = time.ticks_ms()
    led_on = False

    while True:
        client.check_msg()  # Check for new messages
        
        # Blink the LED every 500ms
        if time.ticks_diff(time.ticks_ms(), last_blink_time) > 500:
            led_on = not led_on
            led.value(led_on)
            last_blink_time = time.ticks_ms()

        time.sleep(0.1)  # Prevent CPU overload

if __name__ == '__main__':
    main()

### Explanation: 1. **WiFi Connection**: This script connects to a specified WiFi network using the credentials you provide. 2. **MQTT Setup**: It sets up an MQTT client that connects to a broker and subscribes to a topic. 3. **LED Initialization**: The LED on the Raspberry Pi Pico W (typically connected to pin 25) is initialized. 4. **Main Loop**: The main loop continuously polls for new MQTT messages and blinks the LED every 500 milliseconds. If a message is received, it sets the LED solid for one second. ### Steps to Run the Program: 1. Replace `your_wifi_ssid` and `your_wifi_password` with your WiFi credentials. 2. Transfer the script to your Raspberry Pi Pico W. 3. Run the script on the device. This will connect your Pico W to your WiFi network, subscribe to the MQTT topic, and start polling for messages while blinking the LED to indicate it's running. When an MQTT message is received, the LED will stay on for one second.

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