import com.LabJack.LabJackJNI;
import com.LabJack.LabJackException;

/**
 * This program demonstrates the use of com.LabJack.LabJackJNI.AISample().
 */
public class AISample
{

	static public void main( String args[] )
	{
		System.out.println( "AISample() Example" );

		int idnum[] = new int[ 1 ];
		idnum[ 0 ] = -1;			// use first LabJack found
		int demo = 1;				// DEMO mode, set to 0 if LabJack connected
		int channel = 0;
		int stateIO[] = new int[ 1 ];		// receives input values for IO0-IO3
		int updateIO = 0;					// don't update IOx
		int ledOn = 1;						// turn on LED
		int numChannels = 2;				// read two channels
		int channels[] = new int[ numChannels ];
		channels[ 0 ] = 0;					// read AI0 (single-ended)
		channels[ 1 ] = 9;					// read AI2/AI3 (differential)
		int gains[] = new int[ numChannels ];
		gains[ 0 ] = LabJackJNI.G_01;		// single-ended must be G_01
		gains[ 1 ] = LabJackJNI.G_02;		// differnental input range +/-10V
		int disableCal = 0;					// don't disable automatic calibration correction
		int overVoltage[] = new int[ 1 ];
		float voltages[] = new float[ 4 ];	// user manual says size has to be 4 (i.e. not numChannels).

		int errCode = LabJackJNI.AISample( idnum,
										   demo,
										   stateIO,
										   updateIO,
										   ledOn,
										   numChannels,
										   channels,
										   gains,
										   disableCal,
										   overVoltage,
										   voltages );

		if( errCode != 0 )
		{
			System.out.println( "error: " + errCode );
		}
		else if( overVoltage[ 0 ] > 0 )
		{
			System.out.println( "Overvoltage detected on input" );
		}
		else
		{
			System.out.println( "   Input channel " + channels[ 0 ] + " voltage is " + voltages[ 0 ] );
			System.out.println( "   Input channel " + channels[ 1 ] + " voltage is " + voltages[ 1 ] );
			System.out.println( "   IO0-IO3 inputs: " + stateIO[ 0 ] );
		}
	}
}