前面发了腾讯云点灯以后，有朋友提到了点灯科技，人家都叫点灯科技了，那咱们学点灯必须连一下试试呀。本文将记录如何将设备连接点灯云平台，并通过手机进行远程控制

先上成果演示

一、点灯云准备

下载点灯科技的app-blinker，注册账号，这部分就不用写了

1、添加设备

点击右上角添加设备，设备类型选独立设备

 右下角选择网络接入

 然后复制得到的key

2、配置设备

点击我们刚添加的设备，根据提示，我们直接点载入示例

 二、设备端开发

思路一样，首先找文档，看看如何接入。可以看到有http和mqtt方式接入，那我们肯定是mqtt呀，因为我们要长连接才能保证设备实时被控制。

1、鉴权

所以查找文档点灯科技 (diandeng.tech)可以看到mqtt的鉴权需要先使用http请求获得连接参数

 找一下luatos的http的库http2 - http2客户端 - LuatOS 文档可看到很简单，就一行代码，而且接口使用和其他语言基本一致

 所以直接上代码，我们直接封装一个函数，传入authKey就可以获得连接参数

local function getDeviceInfo(authKey)local code, headers, data = http2.request("GET", serverAdress .. authKey .. "&protocol=mqtt").wait()if data and json.decode(data) thenlocal authdata = json.decode(data)if authdata.message == 1000 thenlog.info("获取设备信息成功",authdata.detail.host:sub(8, -1),authdata.detail.deviceName,authdata.detail.iotId,authdata.detail.iotToken,authdata.detail.uuid)return true, authdata.detail.host:sub(8, -1), authdata.detail.deviceName, authdata.detail.iotId, authdata.detail.iotToken, authdata.detail.uuidendendreturn false
end

2、连接

连接部分的代码就和昨天连腾讯云没啥两样了，都是连mqtt，然后订阅数据，收到数据以后根据文档进行处理

直接上完整代码吧，一样是Air780E，Air105，ESP32C3通用代码

PROJECT = "gpiodemo"
VERSION = "1.0.0"
local sys = require "sys"
require("sysplus")
--{"deviceType": "OwnApp", "fromDevice": "856ED5F216FO23SKEEDQJ8LL", "toDevice": "0451f7667f1c11ec94755254", "data": {"state": "online"}}
local wifi_ssid = "NAS"
local wifi_password = "Air123456"
--如果是wifi设备，这里改成你的wifi账号和密码
local authKey = "" --点灯云申请的设备authKey
local serverAdress = "http://iot.diandeng.tech/api/v1/user/device/diy/auth?authKey=" --http鉴权地址
local mqttc = nil
local led_state = 0
local num = 0
local function getDeviceInfo(authKey)local code, headers, data = http2.request("GET", serverAdress .. authKey .. "&protocol=mqtt").wait()if data and json.decode(data) thenlocal authdata = json.decode(data)if authdata.message == 1000 thenlog.info("获取设备信息成功",authdata.detail.host:sub(8, -1),authdata.detail.deviceName,authdata.detail.iotId,authdata.detail.iotToken,authdata.detail.uuid)return true, authdata.detail.host:sub(8, -1), authdata.detail.deviceName, authdata.detail.iotId, authdata.detail.iotToken, authdata.detail.uuidendendreturn false
end
sys.taskInit(function()log.info("BSP", rtos.bsp())if rtos.bsp() == "ESP32C3" thenLED = gpio.setup(12, 0, gpio.PULLUP)wlan.init()wlan.setMode(wlan.STATION)wlan.connect(ssid, password, 1)local result, data = sys.waitUntil("IP_READY")log.info("wlan", "IP_READY", result, data)elseif rtos.bsp() == "AIR105" thenw5500.init(spi.HSPI_0, 24000000, pin.PC14, pin.PC01, pin.PC00)w5500.config() --默认是DHCP模式w5500.bind(socket.ETH0)LED = gpio.setup(62, 0, gpio.PULLUP)sys.wait(1000)elseif rtos.bsp() == "EC618" thenmobile.simid(2)LED = gpio.setup(27, 0, gpio.PULLUP)endresult, host, deviceName, iotId, iotToken, uuid = getDeviceInfo(authKey)if not result thenlog.info("获取设备信息失败")returnendlog.info("result", host, deviceName, iotId, iotToken)mqttc = mqtt.create(nil, host, 1883)-- mqttc:debug(true)mqttc:auth(deviceName, iotId, iotToken)mqttc:keepalive(30) -- 默认值240smqttc:autoreconn(true, 3000) -- 自动重连机制local mqtt_topic = "/device/" .. deviceName .. "/r"mqtt_topic_pub = "/device/" .. deviceName .. "/s"local send_date = {}mqttc:on(function(mqtt_client, event, data, payload)if event == "conack" thensys.publish("mqtt_conack")log.info("mqtt", "mqtt已连接")mqtt_client:subscribe(mqtt_topic)send_date.dedeviceType = "OwnApp"send_date.fromDevice = deviceNamesend_date.toDevice = uuidsend_date.data = {}send_date.data.state = "online"mqttc:publish(mqtt_topic_pub, json.encode(send_date), 0)elseif event == "recv" thenlog.info("mqtt", "收到消息", data, payload)local data = json.decode(payload)if data.data["btn-abc"] == "tap" thenled_state = (~led_state) & 1LED(led_state)send_date.data = {}send_date.data["btn-abc"] = "tap"mqttc:publish(mqtt_topic_pub, json.encode(send_date), 0)elseif data.data.get == "state" thensend_date.data = {}send_date.data.state = "online"log.info("mqtt", "回复状态为在线", json.encode(send_date))mqttc:publish(mqtt_topic_pub, json.encode(send_date), 0)elseif data.data["btn-123"] == "tap" thenlog.info("mqtt", "数字")num = num + 1send_date.data = {}send_date.data["num-abc"] = {}send_date.data["num-abc"].tex = "num"send_date.data["num-abc"].val = nummqttc:publish(mqtt_topic_pub, json.encode(send_date), 0)endelseif event == "sent" thenlog.info("mqtt", "sent", "pkgid", data)endend)mqttc:connect()sys.wait(10000)sys.waitUntil("mqtt_conack")while true do-- mqttc自动处理重连local ret, topic, data, qos = sys.waitUntil("mqtt_pub", 30000)if ret thenif topic == "close" thenbreakendmqttc:publish(mqtt_topic_pub, data, qos)endendmqttc:close()mqttc = nilend
)-- 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!!!!!

三、测试

把完整代码烧录进设备，不会烧录的可以看 AIR780E二次开发点灯(LuatOS)

底层固件要用最新的，可以自行编译CSDK里的luatos项目，也可以用我这里编译好的LuatOS-SoC_V1001_EC618.soc

烧录好以后，打开点灯app，然后就可以开始测试了。点击开灯按钮可以翻转开发板上带的灯的状态；点击计数按钮，设备端会累加次数并上报，在app可以看到次数不断增加。