docs: update new-page2
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title: Untitled Page
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description:
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published: 1
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date: 2024-03-17T21:23:17.253Z
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date: 2024-03-17T21:25:33.118Z
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tags:
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editor: ckeditor
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dateCreated: 2024-01-20T16:43:58.062Z
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@ -25,3 +25,153 @@ dateCreated: 2024-01-20T16:43:58.062Z
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<p> </p>
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<p> </p>
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<p> </p>
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<p>i want you to act as a software engineer. provide an example micropython script that uses concurrent processing with uasyncio on a multicore esp32 microcontroller. one thread is meant to subscribe to an mqtt topic. another thread to read an adc. the third thread to wait for a button push. the script should contain explicit code for the button waiting logic that sends an mqtt message upon pushing a button.</p>
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<figure class="image"><img src="data:image/png;base64,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" alt="aiLogo"></figure>
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<p>Certainly! Here's an example Micropython script that uses concurrent processing with uasyncio on a multicore ESP32 microcontroller. It includes three threads: one for subscribing to an MQTT topic, another for reading an ADC, and a third for waiting for a button push and sending an MQTT message upon button press.</p>
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<pre><code class="language-python">import uasyncio as asyncio
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from machine import Pin, ADC
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from umqtt.simple import MQTTClient
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# MQTT Configuration
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mqtt_broker = "mqtt.example.com"
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mqtt_topic = "my_topic"
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mqtt_client_id = "esp32_client"
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# Button Configuration
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button_pin = Pin(14, Pin.IN, Pin.PULL_UP)
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# ADC Configuration
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adc_pin = Pin(34)
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adc = ADC(adc_pin)
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# MQTT Callback
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def mqtt_callback(topic, msg):
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print("Received MQTT message:", msg)
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# MQTT Subscriber Task
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async def mqtt_subscriber():
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client = MQTTClient(mqtt_client_id, mqtt_broker)
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client.set_callback(mqtt_callback)
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client.connect()
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client.subscribe(mqtt_topic)
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while True:
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client.wait_msg()
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# ADC Reader Task
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async def adc_reader():
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while True:
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adc_value = adc.read()
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print("ADC Value:", adc_value)
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await asyncio.sleep(1)
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# Button Waiter Task
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async def button_waiter():
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button_state = button_pin.value()
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while True:
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if button_pin.value() != button_state:
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button_state = button_pin.value()
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if button_state == 0:
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print("Button Pressed!")
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mqtt_client = MQTTClient(mqtt_client_id, mqtt_broker)
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mqtt_client.connect()
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mqtt_client.publish(mqtt_topic, "Button Pressed!")
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mqtt_client.disconnect()
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await asyncio.sleep_ms(100)
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# Main Function
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def main():
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loop = asyncio.get_event_loop()
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loop.create_task(mqtt_subscriber())
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loop.create_task(adc_reader())
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loop.create_task(button_waiter())
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loop.run_forever()
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# Run the Main Function
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if __name__ == "__main__":
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main()</code></pre>
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<p>In this script, the <code>mqtt_subscriber</code> function sets up an MQTT client, connects to the broker, and subscribes to the specified topic. It then enters a loop where it waits for incoming MQTT messages using <code>client.wait_msg()</code>.</p>
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<p>The <code>adc_reader</code> function continuously reads the ADC value from the specified pin and prints it every second using <code>adc.read()</code>.</p>
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<p>The <code>button_waiter</code> function continuously checks the state of the button using <code>button_pin.value()</code>. If the button state changes (pressed or released), it sends an MQTT message with the button status.</p>
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<p>The <code>main</code> function creates tasks for each of the three threads and runs the event loop using <code>loop.run_forever()</code>.</p>
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<p>Please note that you may need to install the required libraries (<code>uasyncio</code> and <code>umqtt.simple</code>) before running this script on your ESP32 microcontroller.</p>
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<p> </p>
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<p> </p>
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<p> </p>
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<p> </p>
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<p>i want you to act as a software engineer. provide an example micropython script that uses concurrent processing with uasyncio on a multicore esp32 microcontroller. one thread is meant to subscribe to an mqtt topic. another thread to read an adc. the third thread to wait for a button push. the script should contain explicit code for the button waiting logic that sends an mqtt message upon pushing a button. two of the threads should run on one core and the third one on the second core.</p>
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<figure class="image"><img src="data:image/png;base64,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" alt="aiLogo"></figure>
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<p>Certainly! Here's an updated example Micropython script that uses concurrent processing with uasyncio on a multicore ESP32 microcontroller. It includes three threads: one for subscribing to an MQTT topic, another for reading an ADC, and a third for waiting for a button push. The first two threads will run on one core, and the third thread will run on the second core.</p>
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<pre><code class="language-python">import uasyncio as asyncio
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from machine import Pin, ADC
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from umqtt.simple import MQTTClient
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import _thread
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# MQTT Configuration
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mqtt_broker = "mqtt.example.com"
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mqtt_topic = "my_topic"
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mqtt_client_id = "esp32_client"
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# Button Configuration
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button_pin = Pin(14, Pin.IN, Pin.PULL_UP)
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# ADC Configuration
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adc_pin = Pin(34)
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adc = ADC(adc_pin)
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# MQTT Callback
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def mqtt_callback(topic, msg):
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print("Received MQTT message:", msg)
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# MQTT Subscriber Task
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async def mqtt_subscriber():
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client = MQTTClient(mqtt_client_id, mqtt_broker)
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client.set_callback(mqtt_callback)
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client.connect()
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client.subscribe(mqtt_topic)
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while True:
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client.wait_msg()
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# ADC Reader Task
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async def adc_reader():
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while True:
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adc_value = adc.read()
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print("ADC Value:", adc_value)
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await asyncio.sleep(1)
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# Button Waiter Task
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def button_waiter():
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button_state = button_pin.value()
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while True:
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if button_pin.value() != button_state:
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button_state = button_pin.value()
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if button_state == 0:
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print("Button Pressed!")
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mqtt_client = MQTTClient(mqtt_client_id, mqtt_broker)
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mqtt_client.connect()
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mqtt_client.publish(mqtt_topic, "Button Pressed!")
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mqtt_client.disconnect()
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asyncio.sleep_ms(100)
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# Main Function
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def main():
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loop = asyncio.get_event_loop()
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loop.create_task(mqtt_subscriber())
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loop.create_task(adc_reader())
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# Run button_waiter on the second core
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_thread.start_new_thread(button_waiter, ())
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loop.run_forever()
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# Run the Main Function
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if __name__ == "__main__":
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main()</code></pre>
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<p>In this updated script, the <code>mqtt_subscriber</code> and <code>adc_reader</code> functions remain the same as before. They are created as tasks in the event loop using <code>loop.create_task()</code>.</p>
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<p>The <code>button_waiter</code> function is modified to run on a separate core using the <code>_thread.start_new_thread()</code> function. This function starts a new thread and assigns it to the second core, allowing it to run concurrently with the other two threads.</p>
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<p>Please note that running threads on separate cores requires the <code>micropython-ulab</code> library to be installed on your ESP32 microcontroller. You can install it using the <code>upip</code> package manager by running <code>upip.install('micropython-ulab')</code> before running this script.</p>
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<p> </p>
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<p> </p>
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<p> </p>
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<p> </p>
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