{"id":25896,"date":"2025-04-19T14:06:29","date_gmt":"2025-04-19T06:06:29","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/25896.html"},"modified":"2025-04-19T14:06:29","modified_gmt":"2025-04-19T06:06:29","slug":"%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0-mqtt%e9%9f%a6%e4%b8%9c%e5%b1%b18%e8%bf%9e%e6%8e%a5%e6%9c%8d%e5%8a%a1%e5%99%a89%e5%8f%91%e5%b8%83%e6%b6%88%e6%81%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/25896.html","title":{"rendered":"\u5b66\u4e60\u7b14\u8bb0 MQTT\u97e6\u4e1c\u5c718\u8fde\u63a5\u670d\u52a1\u56689\u53d1\u5e03\u6d88\u606f"},"content":{"rendered":"

1<\/span><\/p>\n

sourcesight\u7684Window\u53ef\u4ee5\u5207\u6362\u5df2\u6253\u5f00\u7684\u754c\u9762<\/span><\/p>\n<\/p>\n

2<\/span><\/p>\n

\u522b\u4eba\u5199\u7684\u4ee3\u7801\u80fd\u5728\u5404\u79cd\u5e73\u53f0\u4e0a\u4f7f\u7528，\u522b\u4eba\u5df2\u7ecf\u628a\u5e73\u53f0\u76f8\u5173\u7684\u51fd\u6570 \u62bd\u8c61\u51fa\u6765\u4e86<\/span><\/p>\n

client = mqtt_lease();->c = (mqtt_client_t *)platform_memory_alloc(sizeof(mqtt_client_t));<\/p>\n

\u5e73\u53f0\u76f8\u5173\u7684 \u5185\u5b58 \u5206\u914d\u51fd\u6570，\u5bf9\u4e8ert-thread\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0freertos\u00a0 \u00a0 \u00a0 \u00a0 \/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0linux\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/<\/p>\n

\u817e\u8baf\u7269\u8054\u7f51\u7ec8\u7aef\u64cd\u4f5c\u7cfb\u7edf（TencentOS tiny）\u5b83\u4eec\u6709\u81ea\u5df1\u7684malloc\u51fd\u6570<\/p>\n<\/p>\n

3<\/span><\/p>\n

client = mqtt_lease();\u5206\u914d\u4e00\u4e2a\u7ed3\u6784\u4f53<\/span><\/p>\n

mqtt_client_t *mqtt_lease(void)<\/span> { \u00a0 \u00a0 int rc; \u00a0 \u00a0 mqtt_client_t* c;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5206\u914d\u4e00\u4e2a\u7ed3\u6784\u4f53<\/span><\/p>\n

\u00a0 \u00a0 c = (mqtt_client_t *)platform_memory_alloc(sizeof(mqtt_client_t)); \u00a0 \u00a0 if (NULL == c) \u00a0 \u00a0 \u00a0 \u00a0 return NULL;<\/p>\n

\u00a0 \u00a0 memset(c, 0, sizeof(mqtt_client_t));<\/p>\n

\u00a0 \u00a0 rc = mqtt_init(c);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u521d\u59cb\u5316\u76f8\u5173\u4fe1\u606f\u00a0<\/span> \u00a0 \u00a0 if (MQTT_SUCCESS_ERROR != rc) \u00a0 \u00a0 \u00a0 \u00a0 return NULL; \u00a0 \u00a0\u00a0 \u00a0 \u00a0 return c; }<\/p>\n

rc = mqtt_init<\/span>(c); -><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 c-mqtt_keep_alive_interval <\/span>= MQTT_KEEP_ALIVE_INTERVAL;\u4fdd\u6301\u6d3b\u7740\u7684\u95f4\u9694<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0c-mqtt_version<\/span>=MQTT_VERSION;\u7248\u672c<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mqtt_read_buf_malloc<\/span>(c, MQTT_DEFAULT_BUF_SIZE);\u8bfbbuff<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mqtt_write_buf_malloc<\/span>(c, MQTT_DEFAULT_BUF_SIZE);\u5199buff \u00a0<\/p>\n

4<\/span><\/p>\n

mqtt_set_port(client, "1883");\u8fde\u63a5\u5230\u670d\u52a1\u5668\u7684\u54ea\u4e2a\u7aef\u53e3<\/span><\/p>\n

mqtt_set_host(client, "www.jiejie01.top");\u8bbe\u7f6e\u670d\u52a1\u5668IP<\/span><\/p>\n

mqtt_connect(client);\u8fde\u63a5<\/span><\/p>\n<\/p>\n

5<\/span><\/p>\n

\u7f51\u53e3，WIFI\u96c6\u6210\u5728\u677f\u5b50\u4e0a，\u76f4\u63a5\u4f7f\u7528socket\u7f16\u7a0b，\u4e00\u5957API\u7684\u4ee3\u7801<\/span><\/p>\n

\u600e\u4e48\u8fde\u63a5\u670d\u52a1\u5668（\u5e73\u53f0\u76f8\u5173\u7684）<\/span>client\u7aef，\u5ba2\u6237\u7aef<\/p>\n

mqtt_connect<\/span>(client);->return mqtt_connect_with_results<\/span>(c);<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0->rc = network_init<\/span>()\u7f51\u7edc\u521d\u59cb\u5316，\u6ca1\u505a\u786c\u4ef6\u76f8\u5173\u7684\u64cd\u4f5c<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 ->rc = network_connect<\/span>(c->mqtt_network);\u7f51\u7edc\u8fde\u63a5，\u8fde\u63a5\u670d\u52a1\u5668,\u5efa\u7acb<\/span>TCP<\/span>\u8fde\u63a5<\/span>\u00a0 <\/span>\u00a0<\/span> \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0-><\/span>return nettype_tls_connect<\/span>(n);\/\/tls\u7f51\u7edc\u4f20\u8f93\u5b89\u5168\u6027 \u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0-><\/span>return nettype_tcp_connect<\/span>(n);<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0->n->socket = <\/span>platform_net_socket_connect<\/span>\u00a0\u5e73\u53f0\u76f8\u5173\u7684 \u7f51\u7edcsocket\u8fde\u63a5（\u79fb\u690d\u65f6\u6ce8\u610f）<\/span><\/p>\n

\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>\u5bf9linux：\u65e0\u4e8b\u53ef\u505a；\u5bf9FreeRtos：AT\u547d\u4ee4\u901a\u8fc7\u4e32\u53e3\u53d1\u7ed9esp8266<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 ->\u00a0\u00a0\/* send connect packet *\/\u53d1\u51fa\u4e00\u4e2a\u8fde\u63a5\u7684packet，\u8981\u8fde\u63a5MQTT\u670d\u52a1\u5668<\/span>\u8fde\u63a5\u8bf7\u6c42<\/span>if ((rc = <\/span>mqtt_send_packet<\/span>())<\/span>(\u5ba2\u6237\u7aef\u8fde\u63a5\u670d\u52a1\u5668)<\/span>\u56de\u5e94\u4fe1\u53f7<\/span>if (<\/span>mqtt_wait_packet<\/span>(c, CONNACK, &connect_timer) == CONNACK) <\/span>\/\/CONNACK\u5ba2\u6237\u7aef\u7b49\u522b\u4eba\u7684\u56de\u5e94<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 ->\/* connect success, and need init mqtt thread *\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 c->mqtt_thread= <\/span>platform_thread_init<\/span>("mqtt_yield_thread", <\/span>mqtt_yield_thread<\/span>, c, MQTT_THREAD_STACK_SIZE, MQTT_THREAD_PRIO, MQTT_THREAD_TICK);<\/span><\/p>\n

}\/\/mqtt_yield_thread\u521b\u5efa\u7684\u7ebf\u7a0b<\/span><\/p>\n<\/p>\n

6<\/span><\/p>\n

\u6838\u5fc3\u7ebf\u7a0b\u548c\u53d1\u5e03\u7ebf\u7a0b<\/span><\/p>\n

main<\/p>\n

mqtt_connect(client);\/\/mqtt_yield_thread\u521b\u5efa\u7684\u6838\u5fc3\u7ebf\u7a0b<\/span> res = pthread_create(&thread1, NULL, mqtt_publish_thread, client);\u00a0<\/span>\/\/mqtt_publish_thread\u53d1\u5e03<\/span><\/p>\n

\u7ebf\u7a0b<\/span> \u00a0<\/p>\n

7<\/span><\/p>\n

\u89e3\u6790\u00a0\u53d1\u5e03\u7ebf\u7a0b<\/span><\/p>\n

\"\"<\/p>\n

mqtt_publish_thread<\/span>->mqtt_message_t msg<\/span>;\u6784\u9020\u4e00\u4e2a\u6d88\u606f\u7ed3\u6784\u4f53<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0->\u00a0size_t \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span>payloadlen;\u6307\u5b9a\u4e0b\u9762buff\u591a\u957f，\u4f46\u6ca1\u8bbe\u7f6e\u00a0 \u00a0 \u00a0 \u00a0 \u00a0msg.payloadlen=xxx;<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 ->void \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0*payload;\u6307\u9488\u6307\u5411\u4e00\u4e2abuff，\u4fdd\u5b58\u8981\u4e0a\u62a5\u7684\u6570\u636emsg.payload=(void *)buf;<\/span><\/p>\n

\u8bbe\u7f6e\u5b8c\u540e\u53d1\u5e03\u6d88\u606f\u00a0<\/p>\n

mqtt_publish<\/span>(client, "topic1", &msg);\u6839\u636e\u4ed6\u7684\u534f\u8bae\u6784\u9020\u4e00\u4e9b\u6570\u636e\u5305<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>\/* serialize publish packet and send it *\/<\/span><\/p>\n

->len = MQTTSerialize_publish<\/span>（）\u6570\u636e\u6309\u67d0\u4e9b\u683c\u5f0f\u6253\u5305\u5728\u4e00\u8d77<\/p>\n

->if ((rc = mqtt_send_packet<\/span>(c, len, &timer))\u53d1\u9001\u6570\u636e->len = network_write<\/span>()<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0->return nettype_tcp_write<\/span>(n, buf, len, timeout);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0->\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0 \u00a0 platform_net_socket_write_timeout<\/span>\u5e73\u53f0\u63d0\u4f9b\u7684\u51fd\u6570（\u8fd9\u4e2a\u51fd\u6570\u53d1AT\u547d\u4ee4，\u901a\u8fc7\u4e32\u53e3\u53d1\u7ed9WIFI\u6a21\u5757）<\/p>\n<\/p>\n

8<\/span><\/p>\n

mcu\u4e0d\u80fd\u7528\u8fd9\u5957\u4ee3\u7801<\/span><\/p>\n

mcu\u91cc\u9762\u8d44\u6e90\u6709\u9650，\u6ca1\u6709\u5b9e\u73b0\u4e00\u5957\u7edf\u4e00\u7684\u63a5\u53e3<\/p>\n

RT-Thread\u57fa\u672c\u4e0a\u5b9e\u73b0\u4e86\u7edf\u4e00\u7684\u63a5\u53e3<\/p>\n

FreeRtos\u57fa\u672c\u4e0a\u6ca1\u4ec0\u4e48\u751f\u6001，\u6ca1\u7edf\u4e00\u7684\u63a5\u53e3<\/p>\n<\/p>\n

9<\/span><\/p>\n

\u53d1\u9001\u6570\u636e\u5f88\u591a\u90fd\u662fJSON\u683c\u5f0f，\u4efb\u4f55\u6570\u636e\u683c\u5f0f\u90fd\u53ef\u4ee5<\/span><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

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