.. _gettingStartedControlFlowDoc:

.. index:: single: Example; Control Flow with Select()

==========================
Control Flow with Select()
==========================

::

	switch PositiveLimitSwitch {
		default:	off
		reset:		MasterReset
		meta:		'Is ON when positive limit is crossed'
	}

	switch NegativeLimitSwitch {
		default:	off
		reset:		MasterReset
		meta:		'Is ON when negative limit is crossed'
	}

	signal SineWave {
		default:	0.0
		rate:		AudioRate
		reset:		MasterReset
		meta:		'Sine wave at 10 Hz amplitude at 1.2'
	}
	
	signal ClippedSineWave {
		default:	0.0
		rate:		AudioRate
		reset:		MasterReset
		meta:		'Sine wave at 10 Hz clipped at 1.0'
	}

	Oscillator (
		type:		'Sine'
		amplitude:	1.2
		frequency:	10.0
		phase:		0.0
		reset:		off
	)
	>> SineWave;

	SineWave
	>> Compare (
		value:		[ 1.0, -1.0 ]
		operator:	[ 'Greater', 'Less' ]
	)
	>> [ PositiveLimitSwitch, NegativeLimitSwitch ]
	>> DigitalOut[1:2];
		
	PositiveLimitSwitch 
	>> Select (
		whenOn:		1.0
		whenOff:	SineWave
	)
	ClippedSineWave;
	
	NegativeLimitSwitch
	>> Select (
		whenOn:		-1.0
		whenOff:	ClippedSineWave;
	)
	>> AudioOut[1:2];