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  <title>NodeMcu -- 像Arduino一样简单的开源可编程固件，还有Wifi哦！</title>
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          <div class="fr-text">开发板</div>

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          <div class="fr-text">English</div>

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        <a href="https://github.com/nodemcu/nodemcu-firmware">Fork me on GitHub</a>
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              <div>NodeMcu</div>超简单的物联网开发平台</div>

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              一款开源快速硬件原型平台，包括固件和开发板，用几行简单的Lua脚本就能开发物联网应用
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        <div class="fr-text">特点</div>

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        <div class="fr-text">开源，交互式，可编程，低成本，简单，智能，WI-FI硬件</div>

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       --><div id="fr_54923c897af6d40d56000010" class="fr-widget fr-text fr-wf fr_textchipslogan ">
            <div class="fr-text">像Arduino一样操作硬件IO</div>

          </div><!--

       --><div id="fr_54747362d775ef1a3600007c" class="fr-widget fr-text fr-wf fr_textchip ">
            <div class="fr-text">提供硬件的高级接口，可以将应用开发者从繁复的硬件配置、寄存器操作中解放出来。用交互式Lua脚本，像arduino一样编写硬件代码！</div>

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            <div class="fr-text">用Nodejs类似语法写网络应用</div>

          </div><!--

       --><div id="fr_54747362d775ef1a36000058" class="fr-widget fr-text fr-wf fr_textnode ">
            <div class="fr-text">事件驱动型API极大的方便了用户进行网络应用开发，使用类似Nodejs的方式编写网络代码，并运行于5mm*5mm大小的MCU之上，加快您的物联网开发进度。</div>

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            <div class="fr-text">超低成本的WI-FI模块</div>

          </div><!--

       --><div id="fr_54747361d775ef1a36000034" class="fr-widget fr-text fr-wf fr_textcloud ">
            <div class="fr-text">用于快速原型的开发板，集成了售价低于10人民币WIFI芯片ESP8266。我们为您提供性价比最高的物联网应用开发平台。</div>

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      <div id="fr_54747661d775ef1a360000a8" class="fr-widget fr-text fr-wf fr_devkittitle ">
        <div class="fr-text">开发板</div>

      </div><!--

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        <div class="fr-text">基于乐鑫esp8266的NodeMcu开发板，具有GPIO、PWM、I2C、1-Wire、ADC等功能，结合NodeMcu 固件为您的原型开发提供最快速的途径。</div>

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            <img src="images/thumbnail/z1s_1.jpg_450x300.jpg" />

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            <div class="fr-text">包含usb串口，即插即用</div>

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            <img src="images/thumbnail/b1s.jpg_450x300.jpg" />

          </div><!--

       --><div id="fr_54747661d775ef1a360000c8" class="fr-widget fr-text fr-wf fr_pic2dis ">
            <div class="fr-text">10 GPIO, 每个都能配置为 PWM, I2C, 1-wire</div>

          </div>


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          </div><!--

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            <div class="fr-text">FCC 认证的WI-FI模块，内置PCB天线</div>

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        <div class="fr-text">示例</div>

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        <div class="fr-text">拿到开发板了？我们开始吧</div>

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        <div id="fr_548f0368f6fa84489e00006b" class="fr-widget fr-text fr-wf fr_paragraph_center_3 ">
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            <p>连接到路由器</p>
            <pre class="prettyprint">
              <code class="language-lua">
print(wifi.sta.getip())
--nil
wifi.setmode(wifi.STATION)
wifi.sta.config("SSID","password")
print(wifi.sta.getip())
--192.168.18.110
              </code>
            </pre>
          </div>

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            <p>像Arduino一样操作IO</p>
            <pre class="prettyprint">
              <code class="language-lua">
pin = 1
gpio.mode(pin,gpio.OUTPUT)
gpio.write(pin,gpio.HIGH)
gpio.mode(pin,gpio.INPUT)
print(gpio.read(pin))

              </code>
            </pre>
          </div>

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            <p>简单的HTTP客户端</p>
            <pre class="prettyprint">
              <code class="language-lua">
-- A simple http client
conn=net.createConnection(net.TCP, false) 
conn:on("receive", function(conn, pl) print(pl) end)
conn:connect(80,"121.41.33.127")
conn:send("GET / HTTP/1.1\r\nHost: www.nodemcu.com\r\n"
    .."Connection: keep-alive\r\nAccept: */*\r\n\r\n")

              </code>
            </pre>
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            <p>更简单的HTTP服务器</p>
            <pre class="prettyprint">
              <code class="language-lua">
-- a simple http server
srv=net.createServer(net.TCP) 
srv:listen(80,function(conn) 
    conn:on("receive",function(conn,payload) 
    print(payload) 
    conn:send("&lth1&gt Hello, NodeMcu.&lt/h1&gt")
    end) 
end)
              </code>
            </pre>
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            <p>PWM操作</p>
            <pre class="prettyprint">
              <code class="language-lua">
function led(r,g,b) 
    pwm.setduty(1,r) 
    pwm.setduty(2,g) 
    pwm.setduty(3,b) 
end
pwm.setup(1,500,512) 
pwm.setup(2,500,512) 
pwm.setup(3,500,512)
pwm.start(1) 
pwm.start(2) 
pwm.start(3)
led(512,0,0) -- red
led(0,0,512) -- blue
              </code>
            </pre>
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            <p>闪烁LED</p>
            <pre class="prettyprint">
              <code class="language-lua">

lighton=0
tmr.alarm(0,1000,1,function()
if lighton==0 then 
    lighton=1 
    led(512,512,512) 
    -- 512/1024, 50% duty cycle
else 
    lighton=0 
    led(0,0,0) 
end 
end)

              </code>
            </pre>

          </div>

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            <p>启动文件</p>
            <pre class="prettyprint">
              <code class="language-lua">
--init.lua will be excuted
file.open("init.lua","w")
file.writeline([[print("Hello World!")]])
file.close()
node.restart()  -- this will restart the module.
              </code>
            </pre>
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            <p>用定时器来循环执行</p>
            <pre class="prettyprint">
              <code class="language-lua">
tmr.alarm(1,5000,1,function() print("alarm 1") end)
tmr.alarm(0,1000,1,function() print("alarm 0") end)
tmr.alarm(2,2000,1,function() print("alarm 2") end)
-- after sometime
tmr.stop(0)
              </code>
            </pre>
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            <p>纯Lua写的telnet服务器</p>
            <pre class="prettyprint">
              <code class="language-lua">
-- a simple telnet server
s=net.createServer(net.TCP,180) 
s:listen(2323,function(c) 
    function s_output(str) 
      if(c~=nil) 
        then c:send(str) 
      end 
    end 
    node.output(s_output, 0)   
    -- re-direct output to function s_ouput.
    c:on("receive",function(c,l) 
      node.input(l)           
      --like pcall(loadstring(l)), support multiple separate lines
    end) 
    c:on("disconnection",function(c) 
      node.output(nil)        
      --unregist redirect output function, output goes to serial
    end) 
    print("Welcome to NodeMcu world.")
end)

              </code>
            </pre>
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            <p>与传感器接口</p>
            <pre class="prettyprint">
              <code class="language-lua">
-- read temperature with DS18B20
t=require("ds18b20")
t.setup(9)
addrs=t.addrs()
-- Total DS18B20 numbers, assume it is 2
print(table.getn(addrs))
-- The first DS18B20
print(t.read(addrs[1],t.C))
print(t.read(addrs[1],t.F))
print(t.read(addrs[1],t.K))
-- The second DS18B20
print(t.read(addrs[2],t.C))
print(t.read(addrs[2],t.F))
print(t.read(addrs[2],t.K))
-- Just read
print(t.read())
-- Just read as centigrade
print(t.read(nil,t.C))
-- Don't forget to release it after use
t = nil
ds18b20 = nil
package.loaded["ds18b20"]=nil
              </code>
            </pre>
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                 &nbsp;&nbsp;&nbsp;&nbsp;&copy; 2014-2018 NodeMcu Team
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