sensor.php

<?php 
include("include/sensorclass.php");
$db = mysqli_connect("localhost","datalogger","datalogger") or die("DB Connect error"); 
mysqli_select_db($db, "datalogger");
echo ("<br>reading Sensor Data");

function readSensor($db, $sensor) 
{ 
 	echo ("\nReading Sensor $sensor");
	$output = array(); 
	$return_var = 0; 
	$i=1;
	exec('sudo /usr/local/bin/loldht '.$sensor, $output, $return_var); 
  	while (substr($output[$i],0,1)!="H") 
	{ 
                $i++; 
				if ($i>20)
				{	
					echo ("\nno Sensor Value");
					$err=new ErrorEntry($sensor,1);
					$err->writeToDB($db);
					return;
				}
	} 
	echo ("\nValue found");
	$osensor=SensorFactory::getSensor($sensor);
	$humid=substr($output[$i],11,5); 
	if ((int)$humid>$osensor->humWarningMax)
		{
		$err=new ErrorEntry($sensor,11);
		$err->writeToDB($db);
		}
	if ((int)$humid<$osensor->humWarningMin)
		{
		$err=new ErrorEntry($sensor,10);
		$err->writeToDB($db);
		}
    $temp=substr($output[$i],33,5); 
    if ((int)$temp>$osensor->tempWarningMax)
		{
		$err=new ErrorEntry($sensor,21);
		$err->writeToDB($db);
		}
	if ((int)$temp<$osensor->tempWarningMin)
		{
		$err=new ErrorEntry($sensor,20);
		$err->writeToDB($db);
		}

	$q = "INSERT INTO datalogger VALUES (now(), $sensor, '$temp', '$humid',0)"; 
	echo ("\n".$q);
	mysqli_query($db, $q); 
	
	return; 
} 

readSensor($db, 21); 
readSensor($db, 9); 
readSensor($db, 8); 
readSensor($db, 7);

$inSensor=SensorFactory::getInsideSensor();
$inValue=$inSensor->getValue($db);
$box1Sensor=SensorFactory::getBox1Sensor();
$box1Value=$box1Sensor->getValue($db);
$box2Sensor=SensorFactory::getBox2Sensor();
$box2Value=$box2Sensor->getValue($db);
$humTolerance=5;

if ($inValue->isValid() && $box1Value->isValid())
	{
	echo ("\nCheck box1");
	if ($box1Value->hum < $inValue->hum - $humTolerance)
		{
		$err=new ErrorEntry($box1Sensor,12);
		$err->writeToDB($db);
		echo ("\nValue not OK");
		}
	else
		echo ("\nValueOK");
	}
if ($inValue->isValid() && $box2Value->isValid())
	{
	echo ("\nCheck box2");
	if ($box2Value->hum < $inValue->hum - $humTolerance)
		{
		$err=new ErrorEntry($box2Sensor,12);
		$err->writeToDB($db);
		echo ("\nValue not OK");
		}
	else
		echo ("\nValueOK");
	}
 
mysqli_close($db); 
?>