宜蘭聰仔: raspberry pi 用 python 取得dht11之溫濕度資料以php呼叫並顯示於網頁中

感謝開發者
dht11.py

import time
import RPi.GPIO as GPIO 
class DHT11Result:
 'DHT11 sensor result returned by DHT11.read() method'
 ERR_NO_ERROR = 0
 ERR_MISSING_DATA = 1
 ERR_CRC = 2
 error_code = ERR_NO_ERROR
 temperature = -1
 humidity = -1
 def __init__(self, error_code, temperature, humidity):
  self.error_code = error_code
  self.temperature = temperature
  self.humidity = humidity
  
 def is_valid(self):
  return self.error_code == DHT11Result.ERR_NO_ERROR 
class DHT11:
 'DHT11 sensor reader class for Raspberry'
  
 __pin = 0
 def __init__(self, pin):
  self.__pin = pin
  
 def read(self):
  GPIO.setup(self.__pin, GPIO.OUT)
  # send initial high
  self.__send_and_sleep(GPIO.HIGH, 0.05)
  # pull down to low
  self.__send_and_sleep(GPIO.LOW, 0.02)
  # change to input using pull up
  GPIO.setup(self.__pin, GPIO.IN, GPIO.PUD_UP)
  
  # collect data into an array
  data = self.__collect_input()
  
  # parse lengths of all data pull up periods
  pull_up_lengths = self.__parse_data_pull_up_lengths(data)
  
  # if bit count mismatch, return error (4 byte data + 1 byte checksum)
  if len(pull_up_lengths) != 40:
   return DHT11Result(DHT11Result.ERR_MISSING_DATA, 0, 0)
  
  # calculate bits from lengths of the pull up periods
  bits = self.__calculate_bits(pull_up_lengths)
  
  # we have the bits, calculate bytes
  the_bytes = self.__bits_to_bytes(bits)
  
  # calculate checksum and check
  checksum = self.__calculate_checksum(the_bytes)
  if the_bytes[4] != checksum:
   return DHT11Result(DHT11Result.ERR_CRC, 0, 0)
   
  # ok, we have valid data, return it
  return DHT11Result(DHT11Result.ERR_NO_ERROR, the_bytes[2], the_bytes[0])
 def __send_and_sleep(self, output, sleep):
  GPIO.output(self.__pin, output)
  time.sleep(sleep)
  
 def __collect_input(self):
  # collect the data while unchanged found
  unchanged_count = 0
  
  # this is used to determine where is the end of the data
  max_unchanged_count = 100
  last = -1
  data = []
  while True:
   current = GPIO.input(self.__pin)
   data.append(current)
   if last != current:
    unchanged_count = 0
    last = current
   else:
    unchanged_count += 1
    if unchanged_count > max_unchanged_count:
     break
  
  return data
 def __parse_data_pull_up_lengths(self, data):
  STATE_INIT_PULL_DOWN = 1
  STATE_INIT_PULL_UP = 2
  STATE_DATA_FIRST_PULL_DOWN = 3
  STATE_DATA_PULL_UP = 4
  STATE_DATA_PULL_DOWN = 5
  state = STATE_INIT_PULL_DOWN
  lengths = [] # will contain the lengths of data pull up periods
  current_length = 0 # will contain the length of the previous period
  for i in range(len(data)):
   
   current = data[i]
   current_length += 1
    
   if state == STATE_INIT_PULL_DOWN:
    if current == GPIO.LOW:
     # ok, we got the initial pull down
     state = STATE_INIT_PULL_UP
     continue
    else:
     continue
   
   if state == STATE_INIT_PULL_UP:
    if current == GPIO.HIGH:
     # ok, we got the initial pull up
     state = STATE_DATA_FIRST_PULL_DOWN
     continue
    else:
     continue
   
   if state == STATE_DATA_FIRST_PULL_DOWN:
    if current == GPIO.LOW:
     # we have the initial pull down, the next will be the data pull up
     state = STATE_DATA_PULL_UP
     continue
    else:
     continue
   if state == STATE_DATA_PULL_UP:
    if current == GPIO.HIGH:
     # data pulled up, the length of this pull up will determine whether it is 0 or 1
     current_length = 0
     state = STATE_DATA_PULL_DOWN
     continue
    else:
     continue
   
   if state == STATE_DATA_PULL_DOWN:
    if current == GPIO.LOW:
     # pulled down, we store the length of the previous pull up period
     lengths.append(current_length)
     state = STATE_DATA_PULL_UP
     continue
    else:
     continue
     
  return lengths
  
 def __calculate_bits(self, pull_up_lengths):
  # find shortest and longest period
  shortest_pull_up = 1000
  longest_pull_up = 0
  
  for i in range(0, len(pull_up_lengths)):
    
   length = pull_up_lengths[i]
   if length < shortest_pull_up:
    shortest_pull_up = length
    
   if length > longest_pull_up:
    longest_pull_up = length
    
  # use the halfway to determine whether the period it is long or short
  halfway = shortest_pull_up + (longest_pull_up - shortest_pull_up) / 2
  
  bits = []
  
  for i in range(0, len(pull_up_lengths)):
   
   bit = False
   if pull_up_lengths[i] > halfway:
    bit = True
    
   bits.append(bit)
  
  return bits
 
 def __bits_to_bytes(self, bits):
  
  the_bytes = []
  byte = 0
  
  for i in range(0, len(bits)):
   
   byte = byte << 1
   if (bits[i]):
    byte = byte | 1
   else:
    byte = byte | 0
   
   if ((i + 1) % 8 == 0):
    the_bytes.append(byte)
    byte = 0
    
  return the_bytes
  
 def __calculate_checksum(self, the_bytes):
  return the_bytes[0] + the_bytes[1] + the_bytes[2] + the_bytes[3] & 255

gettc.py (取得溫度濕度)

php

<html>
    <head>
    <?php
    if (isset($_POST['printon']))
    {
    exec('sudo python /var/www/html/openprintpower.py');
    }
    if (isset($_POST['printoff']))
    {
    exec('sudo python /var/www/html/closeprintpower.py');
    }
    if (isset($_POST['tvon']))
    {
    exec('sudo python /var/www/html/opentvpower.py');
    }
    if (isset($_POST['tvoff']))
    {
    exec('sudo python /var/www/html/closetvpower.py');
    }
    if (isset($_POST['modon']))
    {
    exec('sudo python /var/www/html/openmodpower.py');
    }
    if (isset($_POST['modoff']))
    {
    exec('sudo python /var/www/html/closemodpower.py');
    }
     if (isset($_POST['adslon']))
    {
    exec('sudo python /var/www/html/openadslpower.py');
    }
    if (isset($_POST['adsloff']))
    {
    exec('sudo python /var/www/html/closeadslpower.py');
    }
     if (isset($_POST['routeron']))
    {
    exec('sudo python /var/www/html/openrouterpower.py');
    }
    if (isset($_POST['routeroff']))
    {
    exec('sudo python /var/www/html/closerouterpower.py');
    }

<title>K REMOTE SCREEN</title>
   
<style type="text/css">
   @import url(http://fonts.googleapis.com/css?family=Dosis:200,400,500,600);
html, body { height: 100%; }
body { background: #f2f2f2; }

.container { width: 300px; margin: 10px auto 0; }
.de .den, .de .dene, .de .denem, .de .deneme { position: absolute;  left: 50%; top: 50%; }
.de {
    position: relative;
    width: 240px;
    height: 240px;
    border-radius: 100%;
    box-shadow: 0 0 10px rgba(0, 0, 0, .1);
    background-color: transparent;
}
.den {
    position: relative;
    width: 210px;
    height: 210px;
    margin: -105px 0 0 -105px;
    border-radius: 100%;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, .5), 0 2px 20px rgba(255, 255, 255, 1);
    background: #df3341;
    background: -moz-linear-gradient(left, #df3341 0%, #d4f355 50%, #61c0ec 100%);
    background: -webkit-gradient(linear, left top, right top, color-stop(0%,#df3341), color-stop(50%,#d4f355), color-stop(100%,#61c0ec));
    background: -webkit-linear-gradient(left, #df3341 0%,#d4f355 50%,#61c0ec 100%);
    background: linear-gradient(to right, #df3341 0%,#d4f355 50%,#61c0ec 100%);
    position:relative;
}
.dene {
    width: 180px;
    height: 180px;
    margin: -90px 0 0 -90px;
    border-radius: 100%;
    box-shadow: inset 0 2px 2px rgba(255, 255, 255, .4), 0 3px 13px rgba(0, 0, 0, .85);
    background: #f2f6f5;
    background: -moz-linear-gradient(top, #f2f6f5 0%, #cbd5d6 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #f2f6f5), color-stop(100%, #cbd5d6));
    background: -webkit-linear-gradient(top, #f2f6f5 0%, #cbd5d6 100%);
    background: -o-linear-gradient(top, #f2f6f5 0%, #cbd5d6 100%);
}
.denem {
    width: 160px;
    height: 160px;
    margin: -80px 0 0 -80px;
    border-radius: 100%;
    background: #cbd5d6;
    background: -moz-linear-gradient(top, #cbd5d6 0%, #f2f6f5 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #cbd5d6), color-stop(100%, #f2f6f5));
    background: -webkit-linear-gradient(top, #cbd5d6 0%, #f2f6f5 100%);
}

.deneme {
    padding: 3px 10px 0 10px;
    width: 120px;
    height: 137px;
    display: inline-block;
    margin: -70px 0 0 -70px;
    color: #555;
    text-shadow: 1px 1px 1px white;
    font-family: 'Dosis';
    font-size: 100px;
    font-weight: 400;
    text-align: center;
}
.deneme1 {
    padding: 3px 10px 0 10px;
    width: 100px;
    height: 137px;
    display: inline-block;
    margin: -70px 0 0 -70px;
    color: #555;
    text-shadow: 1px 1px 1px white;
    font-family: 'Dosis';
    font-size: 100px;
    font-weight: 400;
    text-align: center;
}
.deneme span { font-size: 30px; font-weight: 200; }
.deneme span1 { font-size: 50px; font-weight: 200; }
.deneme span2 { font-size: 20px; font-weight: 200; }
.deneme strong { position: absolute; right: 10px; top: 25px; font-size: 34px; }
.deneme strong1 {position: absolute; right: 10px; top: 25px; font-size: 20px;}
.deneme strong2 {position: absolute; right: 15px; top: 75px; font-size: 20px;}
   </style>   
   
    </head>
    <body>
<center>
Raspberry pi 2 python control GPIO via Web Server <br>
192.168.1.252
</center>
<center>
   <?php
       exec('sudo python /var/www/html/gettc.py',$m_tc);
       //print_r($m_tc);
    ?>
       取得DHT11溫度濕度時間:<font style="font-size:30px;" > <?php echo $m_tc[0];?> </font>  
      
   
   
    <table>
<tr>
       <td><div class="container">
          <div class="de">
           <div class="den">
             <div class="dene">
               <div class="denem">
                 <div class="deneme">
                   <?php echo $m_tc[1];?><span></span><strong>°</strong>
                 </div>
</div>
</div>
</div>
</div>
</div>
</td>
    
    <td><div class="container">
          <div class="de">
           <div class="den">
             <div class="dene">
               <div class="denem">
                 <div class="deneme">
                   <?php echo $m_tc[2];?><span></span><strong1>%</strong1>
                 </div>
</div>
</div>
</div>
</div>
</div>
</td>
    
    <td><div class="container">
          <div class="de">
           <div class="den">
             <div class="dene">
               <div class="denem">
                 <div class="deneme">
                   <span1><?php echo "CPU:\n" . $m_tc[3];?></span1><strong2>°</strong2>
                 </div>
</div>
</div>
</div>
</div>
</div>
</td>
    
    
 </tr>
</table>

</center>
<form method="post">
      <table
     style="width: 100%; text-align: left; margin-left: auto; margin-right: auto;"
     border="0" >
        <tbody>
<tr>
            <td style="text-align: center; font-size:60px;" >Turn Relay on</td>
            <td style="text-align: center; font-size:20px; color:blue;" >Status</td>
            <td style="text-align: center; font-size:60px;">Turn Relay off</td>
          </tr>
<tr>
            <td style="text-align: center;" ><br>   </td>
            <td style="text-align: center;" ><br>   </td>
            <td style="text-align: center;" ><br>   </td> 
          </tr>
<tr>
            <td style="text-align: left;"><button name="printon"  style="font-size:60px;" >Printer ON</button></td>
            <td style="text-align: center;font-size:40px;"><?php $pinstatus=exec("gpio -g read 5");
                                             if ($pinstatus)
                                               {echo "ON";}
                                             else
                                               {echo "OFF";}
                                             ?></td>
            <td style="text-align: right;"><button name="printoff" style="font-size:60px;" >Printer Off</button></td>
          </tr>
<tr> <td><br><br></td>  <td><br><br></td>  <td><br><br></td></tr>
<tr>
            <td style="text-align: left;"><button name="tvon" style="font-size:60px;">TV On</button></td>
             <td style="text-align: center;font-size:40px; "><?php $pinstatus=exec("gpio -g read 6");
                                             if ($pinstatus)
                                               {echo "ON";}
                                             else
                                               {echo "OFF";}
                                             ?></td>
            <td style="text-align: right;"><button name="tvoff" style="font-size:60px;" >TV Off</button></td>
          </tr>
<tr><td><br><br></td> <td><br><br></td> <td><br><br></td></tr>
<tr>
            <td style="text-align: left;"><button name="modon" style="font-size:60px;">MOD On</button></td>
             <td style="text-align: center;font-size:40px; "><?php $pinstatus=exec("gpio -g read 13");
                                             if ($pinstatus)
                                               {echo "ON";}
                                             else
                                               {echo "OFF";}
                                             ?></td>
            <td style="text-align: right;"><button name="modoff" style="font-size:60px;">MOD Off</button></td>
          </tr>
<tr><td><br><br></td> <td><br><br></td> <td><br><br></td></tr>
<tr>
            <td style="text-align: left;"><button name="adslon" style="font-size:60px;" >ATUR On</button></td>
             <td style="text-align: center;font-size:40px; "><?php $pinstatus=exec("gpio -g read 26");
                                             if ($pinstatus)
                                               {echo "ON";}
                                             else
                                               {echo "OFF";}
                                             ?></td>
            <td style="text-align: right;"><button name="adsloff" style="font-size:60px;" >ATUR Off</button></td>
          </tr>
<tr><td><br><br></td> <td><br><br></td> <td><br><br></td></tr>
<tr>
            <td style="text-align: left;"><button name="routeron" style="font-size:60px;" >Router On</button></td>
             <td style="text-align: center;font-size:40px; "><?php $pinstatus=exec("gpio -g read 19");
                                             if ($pinstatus)
                                               {echo "ON";}
                                             else
                                               {echo "OFF";}
                                             ?></td>
            <td style="text-align: right;"><button name="routeroff" style="font-size:60px;" >Router Off</button></td>
          </tr>
</tbody>
      </table>
</form>
</body>
    </html>

宜蘭聰仔

2016年3月23日星期三

raspberry pi 用 python 取得dht11之溫濕度資料以php呼叫並顯示於網頁中

沒有留言:

網誌

我的最愛

訪客計數器

追蹤者

mail: