• [Micropython]TPYBoard v202 v102+v202 家庭无线温湿度检测


     一、实验器件

    • 1、TPYBoard v102 1块
    • 2、TPYBoard v202 1块
    • 3、Nokia 5110LCD显示屏 1块
    • 4、DHT11温湿度传感器 1个
    • 5、micro USB 数据线 2根
    • 6、面包板 1块
    • 7、杜邦线 若干
    二、实验步骤
    • 1、TPYBoard v102连接DHT11,采集温湿度信息;
    • 2、TPYBoard v102将采集到的温湿度信息显示在LCD5110上;
    • 3、TPYBoard v102通过串口将温湿度信息发送给TPYBoard v202;
    • 4、TPYBoard v202 将串口的数据读取出来,同时传递到服务器上。
    三、实验方法
    Nokia 5110 LCD显示屏说明LCD5110是一款84x48 的点阵LCD,可以显示4 行汉字。采用串行接口与主处理器进行通信,支持多种串行通信协议(如AVR 单片机的SPI、MCS51 的串口模式0等),传输速率高达4Mbps,可全速写入显示数据。
    ../../../../_images/5110.png
    Nokia 5110 LCD共有8个引脚,不同的板子可能标注的英文略有不同,具体参照如下:../../../../_images/51101.png
    DHT11温湿度说明DHT11是一款有已校准数字信号输出的温湿度传感器。 精度湿度+-5%RH, 温度+-2℃,量程湿度20-90%RH, 温度0~50℃。../../../../_images/DHT11.pngDHT11温湿度共有3个引脚,具体参照如下:
    ../../../../_images/DHT111.png
     四、接线方式
    针脚对应图DHT11和LCD5110的使用方法上面都介绍过了,接下来,就要动手和我们的TPYBoard v102 接起来了。TPYBoard v102连接LCD5110../../../../_images/5110+102.png
    TPYBoard v102连接DHT11
    ../../../../_images/DHT112.png
    TPYBoard v102连接TPYBoard v202
    ../../../../_images/202+102.png
    实物连接图../../../../_images/5110+102+202.png
    四、源代码
    TPYBoard v102 源代码../../../../_images/V102.pngTPYBoard v102 main.py文件内容如下:
    #main.py
    import pyb
    import upcd8544
    from machine import SPI,Pin
    from dht11 import DHT11
    def main(lcd_5110,dht,uart6):
            data_=dht.read_data()
            lcd_5110.lcd_write_string(' ',0,1)#添加一个分隔行
            lcd_5110.lcd_write_string('Temp:'+str(data_[0]),2,2)
            lcd_5110.lcd_write_string(' ',0,3)
            lcd_5110.lcd_write_string(' Hum:'+str(data_[1]),2,4)
            uart6.write(str(data_[0])+','+str(data_[1]))#通过串口将数据发送给v202
    if __name__ == '__main__':
            #init UART
            u6=pyb.UART(6,115200)
            #init DHT11
            dht=DHT11('X12')
            #init LCD5110
            SPI    = pyb.SPI(1)
            RST    = pyb.Pin('Y11')
            CE     = pyb.Pin('Y10')
            DC     = pyb.Pin('Y9')
            LIGHT  = pyb.Pin('X4')
            #DIN=>X8-MOSI/CLK=>X6-SCK
            #DIN =>SPI(1).MOSI 'X8' data flow (Master out, Slave in)
            #CLK =>SPI(1).SCK  'X6' SPI clock
            lcd_5110 = upcd8544.PCD8544(SPI, RST, CE, DC, LIGHT)
            lcd_5110.lcd_write_string('TPYBoard v102',1,0)
            while True:
                    main(lcd_5110,dht,u6)
                    pyb.delay(2000)
    TPYBoard v202 源代码只有1个main.py 文件:
    TPYBoard v202 main.py文件内容,如下:
    import machine
    import network
    import socket
    from machine import Pin
    from machine import UART
    import time
    u2=UART(0,115200)#串口初始化
    led = Pin(2, Pin.OUT).value(1)#板载小蓝灯 默认关闭
    def http_get(temp,hum):
            url='http://www.tpyboard.com/esp8266/SensorTest.php?t='+temp+'&h='+hum+''
            _, _, host, path = url.split('/', 3)
            addr = socket.getaddrinfo(host, 80)[0][-1]
            s = socket.socket()
            s.connect(addr)
            s.send(bytes('GET /%s HTTP/1.0
    Host: %s
    
    ' % (path, host), 'utf8'))
            while True:
                    data = s.recv(50)
                    if data:
                            recive=str(data, 'utf8').upper()
                            #print(str(data, 'utf8'), end='')
                            if(recive.find('YES')>-1):
                               print('Send Data OK')
                    else:
                            break
            s.close()
    def do_connect():
            wlan = network.WLAN(network.STA_IF)
            wlan.active(True)
            if not wlan.isconnected():
                    print('connecting to network...')
                    wlan.connect( 'ssid', 'pwd')
                    while not wlan.isconnected():
                            pass
            print('network config:', wlan.ifconfig())
    do_connect()
    led = Pin(2, Pin.OUT).value(0)#连接wifi成功 点亮LED
    while 1:
            data_=u2.readall()
            if data_!=None:
                    data_=data_.decode('utf8')#数组转成字符串
                    data_a=data_.split(',')#分割
                    temp_=str(data_a[0])#温度
                    hum_=str(data_a[1])#湿度
                    http_get(temp_,hum_)#发送给服务器
            time.sleep(2)
    

      

    服务器源码SensorData.php 文件内容如下:
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>温湿度传感器实验</title>
    <script type="text/javascript">
            var t;
            var te_html_str="N/A";
            function timedCount()
            {
              <?php
                    $myfile = fopen("sensor.txt", "r");
                    $txt =fread($myfile,filesize("sensor.txt"));
                    fclose($myfile);
                    if($txt!="")
                    {
                            echo "te_html_str='".$txt."';";
                    }
                    ?>
              document.getElementById('test').innerHTML=te_html_str;
              t=setTimeout("javascript:location=location;",1000)
            }
    </script>
    </head>
      <body onload="timedCount()">
      <center>
      <div style="margin-top:80px">
            <h2>TPYBoardV202_温湿度传感器实验</h2>
            <div id="test"></div>
      </div>
       </center>
    </body>
    </html>
    
    SensorTest.php 文件内容如下:
    
    <?php
            $time_="获取时间:".date('Y-m-d H:i:s');
            $data_="传感器数据:Sensor Error!";
            $state_="No";
            if(is_array($_GET)&&count($_GET)>1)
            {
                    $data_="";
                    //获取温度
                    if(isset($_GET["t"]))
                    {
                            $para=$_GET["t"];
                            $data_.="传感器数据:温度:".$para." ℃ - ";
                    }
                    //获取湿度
                    if(isset($_GET["h"]))
                    {
                            $para=$_GET["h"];
                            $data_.="湿度:".$para." % ";
                            $state_="Yes";
                    }
            }
            $myfile = fopen("sensor.txt", "w");
            $txt = $time_."<br /><br />".$data_;
            fwrite($myfile, $txt);
            fclose($myfile);
            echo $state_;
    ?> 
    

      

    五、效果图
    实物效果图
    ../../../../_images/SW1.png
    网页效果图
    ../../../../_images/WY1.png
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  • 原文地址:https://www.cnblogs.com/xiaowuyi/p/9115063.html
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