-- 获取更多资料,可以关注公众号"IOT趣制作"-- LuaTools需要PROJECT和VERSION这两个信息PROJECT = "led"VERSION = "1.0.0"-- 引入必要的库文件(lua编写), 内部库不需要requiresys = require("sys")log.info("main", "mqtt_huaweiiot")print(_VERSION)if wdt then --添加硬狗防止程序卡死,在支持的设备上启用这个功能 wdt.init(9000)--初始化watchdog设置为9s sys.timerLoopStart(wdt.feed, 3000)--3s喂一次狗end--用户代码开始-----------------------------------------------------根据自己华为云物联网平台的配置修改以下参数,下列参数仅作参考local mqtt_host = "iot-mqtts.cn-north-4.myhuaweicloud.com" local mqtt_port = 1883 local mqtt_isssl = falselocal client_id = "61fb2d7fde9933029bfuniot_esp8266_test01_0_0_2023021710"local user_name = "61fb2d7fde9933029bfuniot_esp8266_test01"local password = "eaff6453a8b5b774b11funiot99aa367b52df8funiot5333funiotf76bea151"local mqtt_hw = nillocal devdata_topic="$oc/devices/61fb2d7fde9933029funiot_esp8266_test01/sys/properties/report" --订阅属性上报主题local cmdrec_topic="$oc/devices/61fb2d7fde9933029befuniot_esp8266_test01/sys/commands/#" --订阅命令下发主题local service_id="Dev_data" --服务IDlocal command_name="Control" --控制命令local LED_PIN=27 --LED引脚编号gpio.setup(LED_PIN,0, gpio.PULLUP) --设置LED上拉输出
sys.taskInit(function() while 1 do --网络相关 mobile.simid(2) LED = gpio.setup(27, 0, gpio.PULLUP) device_id = mobile.imei() sys.waitUntil("IP_READY", 30000) --mqtt客户端创建
mqtt_hw = mqtt.create(nil,mqtt_host, mqtt_port, mqtt_isssl, ca_file) mqtt_hw:auth(client_id,user_name,password) mqtt_hw:keepalive(60) -- 默认值240s mqtt_hw:autoreconn(true, 3000) -- 自动重连机制 --注册mqtt回调 mqtt_hw:on(function(mqtt_client, event, data, payload) -- 用户自定义代码 log.info("mqtt", "event", event, mqtt_client, data, payload) if event == "conack" then --连接响应成功 sys.publish("mqtt_conack")--订阅主题 mqtt_client:subscribe(pub_devdata_topic) mqtt_client:subscribe(pub_cmdrec_topic) elseif event == "recv" then log.info("mqtt", "downlink", "topic", data, "payload", payload) print("payload:",payload) --解析json --例如:{"paras":{"led":1},"service_id":"Dev_data","command_name":"Control"} local mycmd=json.decode(payload) if mycmd then -- 若解码失败, 会返回nil print("service_id :",mycmd["service_id"]) print("command_name is",mycmd["command_name"]) print("paras->led is",mycmd["paras"]["led"]) if mycmd["service_id"]==service_id and mycmd["command_name"]==command_name then if mycmd["paras"]["led"]==1 then print("led turn on") gpio.set(LED_PIN, gpio.HIGH) elseif mycmd["paras"]["led"]==0 then print("led turn off") gpio.set(LED_PIN, gpio.LOW) end end end elseif event == "sent" then log.info("mqtt", "sent", "pkgid", data) -- elseif event == "disconnect" then -- 非自动重连时,按需重启mqtt_hw -- mqtt_client:connect() end end) --连接mqtt mqtt_hw:connect() sys.waitUntil("mqtt_conack") while true do -- mqtt_hw自动处理重连 local ret, topic, data, qos = sys.waitUntil("mqtt_pub", 30000) if ret then if topic == "close" then break end mqtt_hw:publish(topic, data, qos) end end mqtt_hw:close() mqtt_hw = nil end end)--定时上报属性sys.taskInit(function() local topic = devdata_topic --上报的topic local temp=0 --温度属性值 local data = "{\"services\":[{\"service_id\":\"Dev_data\",\"properties\":{\"temp\": "..tostring(temp).."}}]}" local qos = 1 local temp=0 while true do sys.wait(5000) if mqtt_hw and mqtt_hw:ready() then -- mqtt_hw:subscribe(topic) local pkgid = mqtt_hw:publish(topic, data, qos) temp=temp+1 data = "{\"services\":[{\"service_id\":\"Dev_data\",\"properties\":{\"temp\": "..tostring(temp).."}}]}" -- 也可以通过sys.publish发布到指定task去 -- sys.publish("mqtt_pub", topic, data, qos) end endend)
-- 用户代码已结束----------------------------------------------- 结尾总是这一句sys.run()-- sys.run()之后后面不要加任何语句!!!!!
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