-- 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require
sys = 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 = false
local client_id = "61fb2d7fde9933029bfuniot_esp8266_test01_0_0_2023021710"
local user_name = "61fb2d7fde9933029bfuniot_esp8266_test01"
local password = "eaff6453a8b5b774b11funiot99aa367b52df8funiot5333funiotf76bea151"
local mqtt_hw = nil
local 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_ --服务ID
local 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
end
end)
-- 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!!!!!
