{"id":1214,"date":"2022-03-26T10:46:03","date_gmt":"2022-03-26T02:46:03","guid":{"rendered":"https:\/\/104.es\/?p=1214"},"modified":"2022-03-26T10:46:03","modified_gmt":"2022-03-26T02:46:03","slug":"raspberry-mqtt","status":"publish","type":"post","link":"https:\/\/104.es\/index.php\/2022\/03\/26\/raspberry-mqtt\/","title":{"rendered":"\u6a39\u8393\u6d3e\u5b89\u88ddMQTT\u4f3a\u670d\u5668"},"content":{"rendered":"\n

MQTT\u662f\u4e00\u500b\u975e\u5e38\u6d41\u884c\u7684\u7db2\u8def\u50b3\u8f38\u5354\u5b9a\uff0c\u5728\u7269\u806f\u7db2\u7684\u4e16\u754c\u4e2d\uff0c\u53ef\u4ee5\u5229\u7528\u5b83\u4f86\u50b3\u9001\u611f\u6e2c\u5668\u6240\u53d6\u5f97\u7684\u8cc7\u6599\u5230\u53e6\u5916\u4e00\u500b\u7bc0\u9ede\uff0c\u4e5f\u53ef\u4ee5\u5229\u7528\u5b83\u4f86\u63a7\u5236\u9060\u7aef\u7684\u88dd\u7f6e\u6216\u96fb\u8def\u3002\u5b83\u662f\u4e00\u7a2ePublish\/Subscribe\u6a5f\u5236\u7684\u50b3\u8f38\u5354\u5b9a\uff0c\u4e5f\u5c31\u662f\u6240\u8b02\u7684\u300c\u767c\u4f48\/\u8a02\u95b1\u300d\u6a5f\u5236\u3002\u8cc7\u8a0a\u4f86\u6e90\u7aef\u5229\u7528\u300c\u767c\u4f48\u300d\u529f\u80fd\u628a\u60f3\u8981\u50b3\u51fa\u53bb\u7684\u8cc7\u6599\u900f\u904e\u67d0\u4e00\u500b\u300c\u4e3b\u984c\uff08Topic\uff09\u300d\u50b3\u9001\u51fa\u53bb\uff0c\u5728\u540c\u4e00\u500b\u7db2\u6bb5\u7684\u7bc0\u9ede\u53ea\u8981\u5230\u4f3a\u670d\u5668\u4e0a\u300c\u8a02\u95b1\u300d\u9019\u500b\u300c\u4e3b\u984c\u300d\uff0c\u5c31\u53ef\u4ee5\u7372\u5f97\u8cc7\u8a0a\u4f86\u6e90\u7aef\u6240\u50b3\u9001\u51fa\u4f86\u7684\u8cc7\u6599\u3002<\/p>\n\n\n\n

\u70ba\u4e86\u4f7f\u7528MQTT\uff0c\u767c\u4f48\u7aef\u548c\u8a02\u95b1\u7aef\u4e2d\u9593\u8981\u6709\u4e00\u500b\u4e2d\u4ecb\u7684\u4f3a\u670d\u5668\uff0c\u4e5f\u5c31\u662fMQTT\u7684\u4f3a\u670d\u5668\uff0c\u5169\u7aef\u7684\u7bc0\u9ede\u90fd\u5fc5\u9700\u8981\u80fd\u5920\u9023\u5f97\u5230MQTT\u4f3a\u670d\u5668\uff0c\u5f7c\u6b64\u4e4b\u9593\u624d\u80fd\u5920\u76f8\u4e92\u50b3\u905e\u8cc7\u6599\u3002\u5728\u6b64\u4f8b\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u5229\u7528\u4ee5\u4e0b\u7684\u6307\u4ee4\u5728\u6a39\u8393\u6d3e\u4e0a\u5b89\u88ddMQTT\u4f3a\u670d\u5668\u516c\u53ca\u5ba2\u6236\u7aef\uff1a<\/p>\n\n\n\n

sudo apt install mosquitto mosquitto-clients -y<\/code><\/pre>\n\n\n\n
\u5b89\u88dd\u5b8c\u6210\u4e4b\u5f8c\uff0c\u5728\u6a39\u8393\u6d3e\u4e0a\u5c31\u6709\u4e00\u500b\u904b\u884c\u4e2d\u7684MQTT\u4f3a\u670d\u5668\uff0c\u5b83\u662f\u7cfb\u7d71\u7684\u670d\u52d9\uff0c\u6240\u4ee5\u53ef\u4ee5\u5229\u7528\u4ee5\u4e0b\u7684\u6307\u4ee4\u67e5\u8a62\u76ee\u524d\u4f3a\u670d\u5668\u7684\u904b\u4f5c\u72c0\u614b\uff1a<\/p>\n\n\n\n
sudo service mosquitto status<\/code><\/pre>\n\n\n\n
\u9806\u5229\u7684\u8a71\u53ef\u4ee5\u770b\u5230\u4ee5\u4e0b\u7684\u8a0a\u606f\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u8981\u6e2c\u8a66MQTT\u4f3a\u670d\u5668\u662f\u5426\u80fd\u5920\u6b63\u5e38\u5730\u904b\u4f5c\uff0c\u9700\u8981\u5169\u500b\u4e0d\u540c\u7684\u7d42\u7aef\u6a5f\uff0c\u5728\u5176\u4e2d\u4e00\u500b\u7d42\u7aef\u6a5f\u8acb\u57f7\u884c\u4ee5\u4e0b\u7684\u6307\u4ee4\uff0c\u7528\u4f86\u8a02\u95b1\u300cminhuang\/test\u300d\u9019\u500b\u4e3b\u984c\uff1a<\/p>\n\n\n\n
mosquitto_sub -t minhuang\/test<\/code><\/pre>\n\n\n\n
\u4e0a\u8ff0\u7684\u6307\u4ee4\u6703\u8655\u65bc\u4e00\u500b\u7b49\u5f85\u63a5\u6536\u8a0a\u606f\u7684\u72c0\u614b\uff0c\u6b64\u6642\uff0c\u8acb\u5728\u53e6\u5916\u4e00\u500b\u7d42\u7aef\u6a5f\u5247\u53ef\u4ee5\u57f7\u884c\u4ee5\u4e0b\u7684\u6307\u4ee4\uff0c\u5c0d\u4e3b\u984c\u300cminhuang\/test\u300d\u767c\u4f48\u8a0a\u606f\uff1a<\/p>\n\n\n\n
mosquitto_pub -t minhuang\/test -m \"Hello\"<\/code><\/pre>\n\n\n\n
\u4e0a\u8ff0\u6307\u4ee4\u57f7\u884c\u4e4b\u5f8c\uff0c\u5728\u524d\u4e00\u500b\u7d42\u7aef\u6a5f\u4e2d\u5c31\u53ef\u4ee5\u770b\u5230\u8a0a\u606f”Hello”\u88ab\u50b3\u905e\u904e\u53bb\u4e86\u3002<\/p>\n\n\n\n
\u7576\u7136\uff0c\u5728\u7d42\u7aef\u6a5f\u4e2d\u9032\u884c\u8a0a\u606f\u7684\u50b3\u8f38\u4e26\u6c92\u6709\u90a3\u9ebc\u5730\u65b9\u4fbf\uff0c\u56e0\u70ba\u6211\u5011\u7684\u611f\u6e2c\u5668\u53d6\u5f97\u7684\u65b9\u6cd5\u90fd\u662f\u5728Python\u7a0b\u5f0f\u4e2d\u9032\u884c\uff0c\u6240\u4ee5\u4e5f\u9700\u8981\u53ef\u4ee5\u5728Python\u8a9e\u8a00\u4e2d\u53ef\u4ee5\u50b3\u9001\u8cc7\u6599\u624d\u884c\u3002\u5728Python\u8a9e\u8a00\u4e2d\u6709\u4e00\u500b\u53eb\u505apaho_mqtt\u6a21\u7d44\u53ef\u4ee5\u505a\u9019\u4ef6\u4e8b\u3002\u8acb\u4f7f\u7528\u4ee5\u4e0b\u7684\u6307\u4ee4\u5b89\u88dd\uff1a<\/p>\n\n\n\n
pip install paho_mqtt<\/code><\/pre>\n\n\n\n
\u7136\u5f8c\u5229\u7528\u4ee5\u4e0b\u7684\u7a0b\u5f0f\u5373\u53ef\u50b3\u9001\u8cc7\u6599\u5230\u525b\u525b\u90a3\u500b\u4e3b\u984c(mqtt_pub.py)\uff1a<\/p>\n\n\n\n
import paho.mqtt.client as mqtt\nclient = mqtt.Client()\nclient.connect(\"127.0.0.1\", 1883, 60)\nclient.publish(\"minhuang\/test\", \"Hello\")<\/code><\/pre>\n\n\n\n
\u5982\u679c\u9700\u8981\u53ef\u4ee5\u8b93\u6211\u5011\u5728Python\u7a0b\u5f0f\u57f7\u884c\u6642\u53ef\u4ee5\u900f\u904e\u547d\u4ee4\u5217\u53c3\u6578\u7684\u65b9\u5f0f\u50b3\u905e\u60f3\u8981\u7684\u8a0a\u606f\uff0c\u5247\u53ef\u4ee5\u628a\u4e0a\u8ff0\u7684\u7a0b\u5f0f\u4fee\u6539\u5982\u4e0b(mqtt_pub.py)\uff0c\u672c\u7a0b\u5f0f\u53ef\u4ee5\u5728Windows 10\u4f5c\u696d\u7cfb\u7d71\u4e0b\u57f7\u884c\uff1a<\/p>\n\n\n\n
import sys\nimport paho.mqtt.client as mqtt\nclient = mqtt.Client()\nclient.connect(\"192.168.132.224\", 1883, 60)\nif len(sys.argv)>1:\n    client.publish(\"minhuang\/test\", sys.argv[1])\nelse:\n    client.publish(\"minhuang\/test\", \"Hello\")<\/code><\/pre>\n\n\n\n
\u5982\u679c\u60f3\u8981\u5beb\u4e00\u500b\u53ef\u4ee5\u63a5\u6536MQTT\u7684Python\u7a0b\u5f0f\uff0c\u5247\u53ef\u4ee5\u53c3\u8003\u4ee5\u4e0b\u9019\u500b\u7bc4\u4f8b(mqtt_sub.py)\uff1a<\/p>\n\n\n\n
import paho.mqtt.client as mqtt\nSERVER = \"127.0.0.1\"\nPORT = 1883\nTOPIC = \"minhuang\/test\"\n\ndef on_connect(client, userdata, flags, rc):\n    client.subscribe(TOPIC)\n\ndef on_message(client, userdata, msg):\n    print(\"{}:{}\".format(msg.topic,msg.payload.decode(\"utf-8\")))\n\nclient = mqtt.Client()\nclient.on_connect = on_connect\nclient.on_message = on_message\nclient.connect(SERVER, PORT, 60)\nclient.loop_forever()<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6211\u5011\u60f3\u8981\u8b93\u5916\u90e8\u7684\u7a0b\u5f0f\u53ef\u4ee5\u900f\u904eMQTT\u63a7\u5236\u6a39\u8393\u6d3e\u4e0a\u7684IO\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u63a7\u5236LED\u660e\u6ec5\u7684\u7bc4\u4f8b\u7a0b\u5f0f(mqtt_sub_led.py)\uff1a<\/p>\n\n\n\n
import paho.mqtt.client as mqtt\nimport RPi.GPIO as GPIO\n\nGPIO.setmode(GPIO.BCM)\nGPIO.setup(17, GPIO.OUT)\n\nSERVER = \"127.0.0.1\"\nPORT = 1883\nTOPIC = \"minhuang\/test\"\n\ndef on_connect(client, userdata, flags, rc):\n    client.subscribe(TOPIC)\n\ndef on_message(client, userdata, msg):\n    data = msg.payload.decode(\"utf-8\")\n    print(\"{}:{}\".format(msg.topic,data))\n    if data==\"1\":\n        GPIO.output(17, 1)\n    elif data == \"0\":\n        GPIO.output(17, 0)\n\n\nclient = mqtt.Client()\nclient.on_connect = on_connect\nclient.on_message = on_message\nclient.connect(SERVER, PORT, 60)\nclient.loop_forever()\nGPIO.cleanup()<\/code><\/pre>\n\n\n\n
\u4e0a\u8ff0\u9019\u500b\u7a0b\u5f0f\u57f7\u884c\u4e4b\u5f8c\u5b83\u6703\u63a5\u6536\u6307\u4ee4\uff0c\u5982\u679c\u662f0\u62161\u7684\u8a71\uff0c\u5c31\u6703\u53bb\u958b\u555f\u6216\u95dc\u9589LED\u3002<\/p>\n\n\n\n
\u6700\u5f8c\u4e00\u500b\u95dc\u65bc\u6b0a\u9650\u7684\u554f\u984c\u8981\u8aaa\u660e\u7684\u662f\uff0c\u5982\u679c\u4f60\u60f3\u8981\u8b93\u4f60\u7684MQTT\u4f3a\u670d\u5668\u53ef\u4ee5\u63d0\u4f9b\u7d66\u53e6\u5916\u4e00\u53f0\u96fb\u8166\u4f7f\u7528\uff0c\u90a3\u9ebc\u4f60\u9700\u8981\u5230\/etc\/mosquitto\u8cc7\u6599\u593e\u4e4b\u4e0b\u627e\u5230mosquitto.conf\uff0c\u5728\u9019\u5169\u500b\u6a94\u6848\u5f8c\u9762\u52a0\u4e0a\u4ee5\u4e0b\u7684\u5167\u5bb9\uff1a<\/p>\n\n\n\n
listener 1883\nallow_anonymous true<\/code><\/pre>\n\n\n\n
\u5168\u90e8\u7684mosquitto.conf\u7684\u5167\u5bb9\u770b\u8d77\u4f86\u61c9\u8a72\u50cf\u662f\u4e0b\u9762\u9019\u500b\u6a23\u5b50\uff1a<\/p>\n\n\n\n
# Place your local configuration in \/etc\/mosquitto\/conf.d\/\n#\n# A full description of the configuration file is at\n# \/usr\/share\/doc\/mosquitto\/examples\/mosquitto.conf.example\n\npid_file \/run\/mosquitto\/mosquitto.pid\n\npersistence true\npersistence_location \/var\/lib\/mosquitto\/\n\nlog_dest file \/var\/log\/mosquitto\/mosquitto.log\n\ninclude_dir \/etc\/mosquitto\/conf.d\nlistener 1883\nallow_anonymous true<\/code><\/pre>\n\n\n\n
\u5b58\u6a94\u5b8c\u7562\u4e4b\u5f8c\uff0c\u8acb\u57f7\u884c\u4ee5\u4e0b\u7684\u547d\u4ee4\u8b93\u4fee\u6539\u5f8c\u7684\u8a2d\u5b9a\u751f\u6548\uff0c\u5c31\u53ef\u4ee5\u8b93\u4f3a\u670d\u5668\u63d0\u4f9b\u7d66\u5176\u5b83\u7684\u6a5f\u5668\u4f7f\u7528\u4e86\u3002<\/p>\n\n\n\n
sudo service mosquitto restart<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
MQTT\u662f\u4e00\u500b\u975e\u5e38\u6d41\u884c\u7684\u7db2\u8def\u50b3\u8f38\u5354\u5b9a\uff0c\u5728\u7269\u806f\u7db2\u7684\u4e16\u754c\u4e2d\uff0c\u53ef\u4ee5\u5229\u7528\u5b83\u4f86\u50b3\u9001\u611f\u6e2c\u5668\u6240\u53d6\u5f97\u7684\u8cc7\u6599\u5230\u53e6\u5916\u4e00\u500b\u7bc0\u9ede\uff0c\u4e5f\u53ef\u4ee5\u5229\u7528\u5b83\u4f86\u63a7\u5236\u9060\u7aef\u7684\u88dd\u7f6e\u6216\u96fb\u8def\u3002\u5b83\u662f\u4e00\u7a2ePublish\/Subscribe\u6a5f\u5236\u7684\u50b3\u8f38\u5354\u5b9a\uff0c\u4e5f\u5c31\u662f\u6240\u8b02\u7684\u300c\u767c\u4f48\/\u8a02\u95b1\u300d\u6a5f\u5236\u3002\u8cc7\u8a0a\u4f86\u6e90\u7aef\u5229\u7528\u300c\u767c\u4f48\u300d\u529f\u80fd\u628a\u60f3\u8981\u50b3\u51fa\u53bb\u7684\u8cc7\u6599\u900f\u904e\u67d0\u4e00\u500b\u300c\u4e3b\u984c\uff08Topic\uff09\u300d\u50b3\u9001\u51fa\u53bb\uff0c\u5728\u540c\u4e00\u500b\u7db2\u6bb5\u7684\u7bc0\u9ede\u53ea\u8981\u5230\u4f3a\u670d\u5668\u4e0a\u300c\u8a02\u95b1\u300d\u9019\u500b\u300c\u4e3b\u984c\u300d\uff0c\u5c31\u53ef\u4ee5\u7372\u5f97\u8cc7\u8a0a\u4f86\u6e90\u7aef\u6240\u50b3\u9001\u51fa\u4f86\u7684\u8cc7\u6599\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17],"tags":[],"class_list":["post-1214","post","type-post","status-publish","format-standard","hentry","category-raspberry-pi"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/posts\/1214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/comments?post=1214"}],"version-history":[{"count":0,"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/posts\/1214\/revisions"}],"wp:attachment":[{"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/media?parent=1214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/categories?post=1214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/104.es\/index.php\/wp-json\/wp\/v2\/tags?post=1214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}