传感器数据与MQTT通信代码micropython

以下是一个基本的Micropython代码示例，用于读取传感器数据并将其通过MQTT协议发布到一个MQTT服务器：

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

# Set up Wi-Fi connection
ssid = 'your_wifi_ssid'
password = 'your_wifi_password'
station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(ssid, password)
while station.isconnected() == False:
    pass

print('Connection successful')
print(station.ifconfig())

# Set up MQTT connection
mqtt_server = 'your_mqtt_server'
client_id = 'your_client_id'
topic = 'your_topic'

client = MQTTClient(client_id, mqtt_server)
client.connect()

# Set up sensor
sensor = machine.ADC(0)

# Publish sensor data every 5 seconds
while True:
    sensor_value = sensor.read()
    client.publish(topic, str(sensor_value))
    time.sleep(5)

请注意，此示例代码中使用的库是umqtt.simple，这是一种非常基本的MQTT客户端库。如果您需要更高级的MQTT功能，可能需要使用其他库，例如umqtt.robust或umqtt.robust_ssl。此外，您还需要根据您的传感器类型和配置进行必要的更改。