Raspberry Pi Apache-php Server Sensor Application

This solution is the “heavy way”, since with php you have to load all the page each time you want to refresh the measured value displayed.

copy index.php and get_sense.py in /var/www/html

index.php

<html>
<head>
<meta name="viewport" content="width=device-width" />

  <title>RPI Apache-php Sensor App </title>

</head>
       <body>



<hr> <!---------------------------------------------------------------->
<h2>Control GPIO4 LED</h2>

         <form method="get" action="index.php">
            <input type="submit" style = "font-size: 14 pt" value="OFF" name="off">
            <input type="submit" style = "font-size: 14 pt" value="ON" name="on">
         </form>

<?php

 shell_exec('gpio -g mode 4 out');
 


		if(isset($_GET['off']))
			{
							echo "LED is off";

							shell_exec('echo LED OFF');
							shell_exec('gpio -g write 4 0');
			}
            else if(isset($_GET['on']))
            {
                        echo "LED is on";
                        shell_exec('gpio -g write 4 1');
            }
?>
<hr> <!---------------------------------------------------------------->

<h2>Get Measured data </h2>

<?php
        if ($_GET){

                $temp = shell_exec('sudo python3 /var/www/html/get_sense.py');
         }
?>

<form NAME = "sense" Method = "GET">

        <button name = "ask"> ask </button> <br/> <br/>
        <div id='log' > Temperature: <?php echo $temp; ?> &deg;C</div>
</form>

<hr>
   </body>
</html>

get_sense.py

#! /usr/bin/python3

import sys
from sense_hat import SenseHat
sense = SenseHat()

def main():
    t = sense.get_temperature();
    t = round(t,2)
    print(t)


if __name__=="__main__":
  main()

Raspberry Pi NodeJS Server Sensor Application MQTT