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72 lines
1.8 KiB
72 lines
1.8 KiB
import os
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import subprocess
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import paho.mqtt.client as mqtt
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import time
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broker = '121.40.129.71'
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port = 48835
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# 回调函数，当客户端收到连接响应时被调用
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def on_connect(client, userdata, flags, rc, properties=None):
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print("连接结果: " + str(rc))
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# 订阅响应主题
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client.subscribe("request/topic")
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# 回调函数，当客户端收到消息时被调用
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def on_message(client, userdata, msg):
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print("收到消息: " + msg.topic + " " + str(msg.payload))
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if not os.path.exists("smp_coder/user.txt"):
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with open("smp_coder/user.txt", "a") as f:
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f.write(msg.payload.decode("utf-8") + "\n")
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else:
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# 全局变量，用于标记是否收到响应
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global response_received
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response_received = True
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# 创建客户端实例
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try:
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client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2,)
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except:
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client = mqtt.Client()
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# 设置回调函数
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client.on_connect = on_connect
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client.on_message = on_message
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# 连接到MQTT代理
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client.connect(broker, port, 60)
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# 启动一个后台线程来处理网络流量和回调
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client.loop_start()
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# 发布消息
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# 等待响应
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response_received = False
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while not response_received:
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print("等待响应...")
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time.sleep(1)
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client.publish("response/topic", "Set user.txt success!", qos=2)
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command = ["sudo", "myenv/bin/python3", "smp_coder/extur_smp.py"]
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with open("logex.txt", "w") as log_file:
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process = subprocess.Popen(command, stdout=log_file, stderr=log_file, bufsize=1, universal_newlines=True)
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print("启动树莓派拍照客户端成功。")
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client.publish("response/topic", "启动树莓派拍照客户端成功", qos=2)
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# 停止网络循环并断开连接
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client.loop_stop()
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client.disconnect()
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print("收到响应，客户端退出。")
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