基於ESP8266燈控

 

ESP8266燈控硬件：使用淘寶ESP-01模塊，帶一個ESP8266插槽和一個5V繼電器，220V轉5V用拆下的手機充電器

ESP8266代碼，開放TCP Server（80）端口，同時作爲TCP Client連接遠端TCP Server，可讀取和配置pin1、pin2，可讀取adc

WIFI_NAME = "MERCURY_204"
WIFI_PASSWORD = "Password"
SERVER_IP = "192.168.1.200"
SERVER_PORT = 8081

led1 = 3
led2 = 4
gpio.mode(led1, gpio.OUTPUT)
gpio.mode(led2, gpio.OUTPUT)
wifi.setmode(wifi.STATION)
wifi.sta.config(WIFI_NAME, WIFI_PASSWORD)
wifi.sta.connect()
wifi.sta.autoconnect(1)

Watchdog = 0
local function receiveData(data)
    Watchdog = 0
    local _GET = {}
    for k, v in string.gmatch(data, "(%w+)=(%d*)") do
        _GET[k] = v
    end
    
    local buf = "ID="..node.chipid();
    if(_GET.PIN1 == "1")then
        gpio.write(led1, gpio.HIGH);
        print("led1 on")
    elseif(_GET.PIN1 == "0")then
        gpio.write(led1, gpio.LOW);
        print("led1 off")
    end
    if(_GET.PIN1 ~= nil)then
        buf = buf.." PIN1="..gpio.read(led1)
    end
    
    if(_GET.PIN2 == "1")then
        gpio.write(led2, gpio.HIGH);
        print("led2 on")
    elseif(_GET.PIN2 == "0")then
        gpio.write(led2, gpio.LOW);
        print("led2 off")
    end
    if(_GET.PIN2 ~= nil)then
        buf = buf.." PIN2="..gpio.read(led2)
    end
    
    if(_GET.ADC ~= nil)then
        buf = buf.." ADC="..adc.read(0)
    end
    return buf
end

ClientConnectedFlag = 0
i=0
tmr.alarm(1, 1000, 1, function()
    if wifi.sta.getip()== nil then
        print("IP unavaiable, Waiting...")
        i=i+1
        if(i>10) then
            print("restart nodeMCU")
            node.restart()
        end
    elseif ClientConnectedFlag == 0 then
        print("Connecting to Server...")
        Client = net.createConnection(net.TCP, 0)
        Client:connect(SERVER_PORT, SERVER_IP)

        Client:on("receive", function(Client, data)
            Client:send(receiveData(data));
            collectgarbage();
        end)
        Client:on("connection", function(sck, c)
            ClientConnectedFlag = 1
        end)
        Client:on("disconnection", function(sck, c)
            ClientConnectedFlag = 0
        end)
    elseif Watchdog >= 120 then
        Watchdog = 0
        ClientConnectedFlag = 0
        Client:close();
    else
        Watchdog = Watchdog + 1
    end
end)

srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
    conn:on("receive", function(client,data)
        client:send(receiveData(data));
        client:close();
        collectgarbage();
    end)
end)

 

PC上使用QT開放兩個TCP Server（8080、8081），8081端口用於管理設備，8080端口用於與Android終端通訊

 

打印Log

Android終端作爲TCP Client連接到PC的TCP 8080端口，通過Server獲取和配置已連接的設備信息

設備、PC、Android連接方式：

 

方案改進：利用了之前買的nanopi開發版，手掌心大小，通過網線接入到局域網中，配置靜態ip爲192.168.1.200，將nanopi代替pc

nanopi上跑Ubuntu-Core with Qt-Embedded系統，在pc上建立ubuntux64虛擬機，安裝好arm交叉編譯器，在pc上完成程序移植，因爲下載qt太慢，直接用c重新寫了一遍，相比之下c代碼對字符串的處理真是麻煩，全部當數組操作。調試ok後編譯拷貝到nanopi上，賦予可執行權限，就可以通過nanopi控制esp8266了