pHpReader - reading pH values from atsci_ph.
    Copyright (C) 2017  Ole-Henrik Jakobsen


Software requirements:
	php-cli			To run PHP code at command line interface
	i2c-tools		To connect with the pH circuit board.
	atlas_scientific 	To interact with the reader module (git clone https://github.com/jvsalo/atlas_scientific.git)
	

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 Supported sensors:	| Information:
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	Dummy		|	For testing purposes.
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	AtlasScientific	|	For the AtlasScientific pH Probe and others compatible with their pH circuit board.
	pH Probe	|	
	Circuit board	|	Sensor installation:
			|		To install and enable the sensors you need to enable I2C mode (default is UART):
			|			This require you to short the TX with PGND on the board with power connected.
			|			See the manual for more information:
			|				Page 39: https://www.atlas-scientific.com/_files/_datasheets/_circuit/pH_EZO_datasheet.pdf
			|			
			|
			|
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Configuration of pHpReader:
	Choose type of sensor(s) to include and also enable and disable the test mode.
	Config file: config.ini


Configuration of sensors:
	Choose the address of the sensor and the path to AtlasScientific tools


Use pHpReader:
	CLI:
		cd /path/to/phreader
		php phreader.php [sensor]
	
	PHP:
		$path = "/path/to/phreader";
		chdir($path);
		include_once("" . $path . "/phreader.php");


Use pHpReader function:
	phreader(); = int $value