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/*
* Copyright 2011 Phidgets Inc. All rights reserved.
*/
package com.phidgets;
import java.util.Iterator;
import java.util.LinkedList;
import com.phidgets.event.*;
/**
* This class represents a Phidget Text LCD. All methods
* to control the Text LCD are implemented in this class.
* <p>
* The TextLCD Phidget consists of a Vacuum Fluorescent display that is capable of
* displaying Standard as well as custom characters in multiple rows.
*
* @author Phidgets Inc.
*/
public final class TextLCDPhidget extends Phidget
{
public TextLCDPhidget () throws PhidgetException
{
super (create ());
}
private static native long create () throws PhidgetException;
/**
* No screens attached. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_NONE = 1;
/**
* 1 row, 8 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_1x8 = 2;
/**
* 2 row, 8 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_2x8 = 3;
/**
* 1 row, 16 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_1x16 = 4;
/**
* 2 row, 16 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_2x16 = 5;
/**
* 4 row, 16 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_4x16 = 6;
/**
* 2 row, 20 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_2x20 = 7;
/**
* 4 row, 20 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_4x20 = 8;
/**
* 2 row, 24 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_2x24 = 9;
/**
* 1 row, 40 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_1x40 = 10;
/**
* 2 row, 40 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_2x40 = 11;
/**
* 4 row, 40 column screen. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_4x40 = 12;
/**
* Unknown screen size. This is used with {@link #getScreenSize() getScreenSize} and {@link #setScreenSize(int) setScreenSize}
*/
public static final int PHIDGET_TEXTLCD_SCREEN_UNKNOWN = 13;
/**
* Returns the number of rows available on the display.
* @return Number of rows
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getRowCount () throws PhidgetException;
/**
* Returns the number of columns (characters per row) available on the display. This value is
* the same for every row.
* @return Number of columns
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getColumnCount () throws PhidgetException;
/**
* Returns the number of screens supported by the TextLCD. Not all TextLCDs support this method.
* @return Number of screens.
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getScreenCount () throws PhidgetException;
/**
* Returns the active screen. Not all TextLCDs support this method.
* @return active screen
* @throws PhidgetException If this Phidget is not opened and attached, or screen is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getScreen () throws PhidgetException;
/**
* Sets the active screen. All other API calls depend on this being called first to select the screen that subsequent calls affect.
* When making calls from multiple threads, selecting the screen should be synchronized with setting screen properties in order to avoid
* having messages go to the wrong display. Not all TextLCDs support this method.
* @param screen Screen
* @throws PhidgetException If this Phidget is not opened and attached, the screen number is out of range, or screen is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setScreen (int screen) throws PhidgetException;
/**
* Returns the screen size for the active TextLCD display. The TextLCD Adapter supports a pre-defined set of screen sizes to choose from.
* By default, all screens are set to {@link #PHIDGET_TEXTLCD_SCREEN_NONE PHIDGET_TEXTLCD_SCREEN_NONE}.
* Not all TextLCDs support this method.
* <p>
* The possible values for screen size are {@link #PHIDGET_TEXTLCD_SCREEN_NONE PHIDGET_TEXTLCD_SCREEN_NONE},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x8 PHIDGET_TEXTLCD_SCREEN_1x8}, {@link #PHIDGET_TEXTLCD_SCREEN_2x8 PHIDGET_TEXTLCD_SCREEN_2x8},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x16 PHIDGET_TEXTLCD_SCREEN_1x16}, {@link #PHIDGET_TEXTLCD_SCREEN_2x16 PHIDGET_TEXTLCD_SCREEN_2x16},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x16 PHIDGET_TEXTLCD_SCREEN_4x16}, {@link #PHIDGET_TEXTLCD_SCREEN_2x20 PHIDGET_TEXTLCD_SCREEN_2x20},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x20 PHIDGET_TEXTLCD_SCREEN_4x20}, {@link #PHIDGET_TEXTLCD_SCREEN_2x24 PHIDGET_TEXTLCD_SCREEN_2x24},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x40 PHIDGET_TEXTLCD_SCREEN_1x40}, {@link #PHIDGET_TEXTLCD_SCREEN_2x40 PHIDGET_TEXTLCD_SCREEN_2x40},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x40 PHIDGET_TEXTLCD_SCREEN_4x40}, {@link #PHIDGET_TEXTLCD_SCREEN_UNKNOWN PHIDGET_TEXTLCD_SCREEN_UNKNOWN}
* <p>
* By default, all screens are set to {@link #PHIDGET_TEXTLCD_SCREEN_NONE PHIDGET_TEXTLCD_SCREEN_NONE}
* <p>
* @return screen size
* @throws PhidgetException If this Phidget is not opened and attached, or screen size is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getScreenSize () throws PhidgetException;
/**
* Sets the screen size for the active TextLCD display. The TextLCD Adapter supports a pre-defined set of screen sizes to choose from.
* This method must always be called when trying to write text to a display.
* Not all TextLCDs support this method.
* @param screenSize Screen size
* The possible values for screen size are {@link #PHIDGET_TEXTLCD_SCREEN_NONE PHIDGET_TEXTLCD_SCREEN_NONE},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x8 PHIDGET_TEXTLCD_SCREEN_1x8}, {@link #PHIDGET_TEXTLCD_SCREEN_2x8 PHIDGET_TEXTLCD_SCREEN_2x8},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x16 PHIDGET_TEXTLCD_SCREEN_1x16}, {@link #PHIDGET_TEXTLCD_SCREEN_2x16 PHIDGET_TEXTLCD_SCREEN_2x16},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x16 PHIDGET_TEXTLCD_SCREEN_4x16}, {@link #PHIDGET_TEXTLCD_SCREEN_2x20 PHIDGET_TEXTLCD_SCREEN_2x20},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x20 PHIDGET_TEXTLCD_SCREEN_4x20}, {@link #PHIDGET_TEXTLCD_SCREEN_2x24 PHIDGET_TEXTLCD_SCREEN_2x24},
* {@link #PHIDGET_TEXTLCD_SCREEN_1x40 PHIDGET_TEXTLCD_SCREEN_1x40}, {@link #PHIDGET_TEXTLCD_SCREEN_2x40 PHIDGET_TEXTLCD_SCREEN_2x40},
* {@link #PHIDGET_TEXTLCD_SCREEN_4x40 PHIDGET_TEXTLCD_SCREEN_4x40}, {@link #PHIDGET_TEXTLCD_SCREEN_UNKNOWN PHIDGET_TEXTLCD_SCREEN_UNKNOWN}
* <p>
* By default, all screens are set to {@link #PHIDGET_TEXTLCD_SCREEN_NONE PHIDGET_TEXTLCD_SCREEN_NONE}
* <p>
* @throws PhidgetException If this Phidget is not opened and attached, the screen number is out of range, or screen size is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setScreenSize (int screenSize) throws PhidgetException;
/**
* Returns the contrast of the display. This is the contrast of the entire display.
* @return Current contrast
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native int getContrast () throws PhidgetException;
/**
* Sets the contrast of the display. The valid range is 0-255. Changing the contrast can increase the readability
* of the display in certain viewing situation, such as at an odd angle.
* @param contrast New contrast to set
* @throws PhidgetException If this Phidget is not opened and attached, or the contrast value is out of range.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setContrast (int contrast) throws PhidgetException;
/**
* Returns the brightness of the display. This is the brightness of the backlight. Not all TextLCDs support this method.
* @return Current brightness
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached, or brightness is not supported.
*/
public native int getBrightness () throws PhidgetException;
/**
* Sets the brightness of the display. The valid range is 0-255. Changing the brightness can increase the readability of the display in certain viewing situation, such as at an odd angle.
* Not all TextLCDs support this method.
* @param brightness New brightness to set
* @throws PhidgetException If this Phidget is not opened and attached, or the brightness value is out of range, or brightness is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setBrightness (int brightness) throws PhidgetException;
/**
* Returns the status of the backlight. True indicated that the backlight is on, False indicated that it is off.
* The backlight is by default turned on.
* @return Status of the backlight
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native boolean getBacklight () throws PhidgetException;
/**
* Sets the status of the backlight. True turns the backlight on, False turns it off.
* The backlight is by default turned on.
* @param backlight New backlight state
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setBacklight (boolean backlight) throws PhidgetException;
/**
* Returns the status of the cursor. True turns the cursor is on, False turns it off.
* The cursor is an underscore which appears directly to the right of the last entered character
* on the display. The cursor is by default disabled.
* @return Status of the cursor
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native boolean getCursor () throws PhidgetException;
/**
* Sets the state of the cursor. True indicates that the cursor on, False indicates that it is off.
* The cursor is an underscore which appears directly to the right of the last entered character
* on the display. The cursor is by default disabled.
* @param cursor New cursor state
* @throws PhidgetException If this Phidget is not opened and attached, or if the cursor has not been set
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setCursor (boolean cursor) throws PhidgetException;
/**
* Returns the status of the cursor blink. True turns the cursor blink on, False turns it off.
* The cursor blink is an flashing box which appears directly to the right of the last entered character
* on the display, in the same spot as the cursor if it is enabled. The cursor blink is by default disabled.
* @return Status of the cursor blink
* @throws PhidgetException If this Phidget is not opened and attached.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native boolean getCursorBlink () throws PhidgetException;
/**
* Sets the state of the cursor blink. True indicates that the cursor blink is on, False indicates that it is off.
* The cursor blink is an flashing box which appears directly to the right of the last entered character
* on the display, in the same spot as the cursor if it is enabled. The cursor blink is by default disabled.
* @param cursorblink New cursor blink state
* @throws PhidgetException If this Phidget is not opened and attached, or if the cursor has not been set.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setCursorBlink (boolean cursorblink) throws PhidgetException;
/**
* Sets the display string of a certain row.
* @param index row
* @param text String
* @throws PhidgetException If this Phidget is not opened and attached, if the string is too long, or if the row is invalid.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setDisplayString (int index, String text) throws PhidgetException;
/**
* Sets the character to display at a certain row and column.
* @param row row
* @param column column
* @param character character
* @throws PhidgetException If this Phidget is not opened and attached, or if the row or column is invalid.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setDisplayCharacter (int row, int column, char character) throws PhidgetException;
/**
* Sets a custom character. You can set up to 8 custom characters, each one is completely defined by two integers, and gets
* stored in the character display until power is removed, whence they must be re-programmed. The characters lie in positions 8-15, and
* can be displayed by sending these codes to setDisplayString in amongst standard ASCII characters. See the TextLCD Java example for
* more information.
* @param index position ( 8-15 )
* @param param1 first half of the character code
* @param param2 second half of the character code
* @throws PhidgetException If this Phidget is not opened and attached, or if the index is invalid.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void setCustomCharacter (int index, int param1, int param2) throws PhidgetException;
/**
* Initializes the active TextLCD Display. This runs an initialization routine which sets up and clears the display. This can be used for
* activating a display that was plugged in after the TextLCD Adapter was attached, to clear the display after setting/getting the screen size,
* and to re-initialize a display if it has become corrupted(display not working). Not all TextLCDs supported this method.
* @throws PhidgetException If this Phidget is not opened and attached, or initialize is not supported.
* See {@link com.phidgets.Phidget#open(int) open} for information on determining if a device is attached.
*/
public native void initialize () throws PhidgetException;
private final void enableDeviceSpecificEvents (boolean b)
{
}
}
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