import time
import network
import usocket as socket
from mqtt import MQTTClient

# WiFi连接配置
WIFI_SSID = "wifi"
WIFI_PASSWORD = "tttt1234"

# 阿里云IoT平台MQTT服务器配置
# 阿里云IoT平台MQTT服务器配置
ALIYUN_SERVER = "iot-060abets.mqtt.iothub.aliyuncs.com"
CLIENT_ID = "k0zvw5MlCDl.TC6ICgOHb7cVk3Roy1cN|securemode=2,signmethod=hmacsha256,timestamp=1711519481150|"
USERNAME = "TC6ICgOHb7cVk3Roy1cN&k0zvw5MlCDl"
PASSWORD = "4b7b97817bc41a9df9f07af8cccf4b11673f61539907d42339a72af8c4a031e0"
PORT = 1883
# WiFi连接
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print("Connecting to WiFi...")
        wlan.connect(WIFI_SSID, WIFI_PASSWORD)
        while not wlan.isconnected():
            pass
    print("WiFi Connected!")
    print("IP Address:", wlan.ifconfig()[0])

# MQTT消息回调函数
def mqtt_callback(topic, msg):
    print("Received message from topic: {}, Message: {}".format(topic, msg))

# 连接到阿里云IoT平台的MQTT服务器
def connect_mqtt():
    client = MQTTClient(CLIENT_ID, ALIYUN_SERVER, 1883, USERNAME, PASSWORD)
    client.set_callback(mqtt_callback)
    client.connect()
    print("Connected to Aliyun IoT Platform!")
    return client

# 订阅主题
def subscribe_topic(client, topic):
    client.subscribe(topic)
    print("Subscribed to topic:", topic)

# 发布消息
def publish_message(client, topic, message):
    client.publish(topic, message)
    print("Published message to topic:", topic)

def main():
    connect_wifi()
    mqtt_client = connect_mqtt()
    subscribe_topic(mqtt_client, "your_subscribed_topic")

    # 模拟数据，并发布到指定的主题
    while True:
        data = "Your sensor data"  # 替换成您的传感器数据
        publish_message(mqtt_client, "your_published_topic", data)
        time.sleep(5)  # 每隔5秒发送一次数据

if __name__ == "__main__":
    main()

wifi连接成功了

有wifi扩展板

会不会是mqtt协议版本太低了

@fxiw 你好，你这个问题解决了吗？

openmv数据传输到阿里云云平台，有教程吗？

必须要买串口调试板吗

可以的，，，，，，，

想把stm32的数据传给openmv请问怎么做？有没有教程，谢谢！！！！

做了一个车牌识别，但是车牌上的中文没法输出出来