Tutorial.LiquidCrystalTextDirection History

Hide minor edits - Show changes to output

July 22, 2013, at 11:06 AM by Roberto Guido - minor typo. Thanks to Roger Linhart for feedback
Changed lines 13-14 from:
This sketch prints @@a@@ through @@l@@ right to left, then @@m@@ theough @@r@@ left to right, then @@s@@ through @@z@@ right to left again.
to:
This sketch prints @@a@@ through @@l@@ right to left, then @@m@@ through @@r@@ left to right, then @@s@@ through @@z@@ right to left again.
April 09, 2013, at 06:05 PM by Federico -
Added line 19:
* pin headers to solder to the LCD display pins
Added line 28:
Before wiring the LCD screen to your Arduino we suggest to solder a pin header strip to the 14 (or 16) pin count connector of the LCD screen, as you can see in the image above.\\
Deleted line 79:
December 10, 2012, at 04:14 PM by Scott Fitzgerald -
Changed line 27 from:
To wire your LED screen to your Arduino, connect the following pins:
to:
To wire your LCD screen to your Arduino, connect the following pins:
November 16, 2011, at 04:37 AM by Scott Fitzgerald -
Changed lines 50-51 from:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/TextDirection/TextDirection.pde lang=arduino tabwidth=4:)
to:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/TextDirection/TextDirection.ino lang=arduino tabwidth=4:)
September 23, 2010, at 10:49 PM by Christian Cerrito -
Changed lines 3-4 from:
!!LiquidCrystal - Text Direction (leftToRight() and rightToLeft()
to:
!!!LiquidCrystal - Text Direction (leftToRight() and rightToLeft()
September 21, 2010, at 10:58 PM by Christian Cerrito -
Changed lines 59-61 from:
* [[Reference/LiquidCrystalDisplay| @@lcd.Display()@@]]
* [[Reference/LiquidCrystalNoCursor | @@lcd.NoDisplay()@@]]
to:
* [[Reference/LiquidCrystalRightToLeft| @@lcd.rightToLeft()@@]]
* [[Reference/LiquidCrystalLeftToRight | @@lcd.leftToRight()@@]]
* [[Reference/LiquidCrystalHome | @@lcd.home()@@]]
Deleted line 66:
* [[LiquidCrystalTextDirection | TextDirection]]: control which way text flows from the cursor.
Added lines 76-78:


September 21, 2010, at 10:56 PM by Christian Cerrito -
Changed lines 5-7 from:
The [[Reference/LiquidCrystal | '''Liquid Crystal Library''']]
allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.
to:
The [[Reference/LiquidCrystal | '''Liquid Crystal Library''']] allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.
September 21, 2010, at 10:56 PM by Christian Cerrito -
Changed lines 5-6 from:
The LiquidCrystal library allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.
to:
The [[Reference/LiquidCrystal | '''Liquid Crystal Library''']]
allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.
Added lines 58-63:
* [[Reference/LiquidCrystalBegin | @@lcd.begin()@@]]
* [[Reference/LiquidCrystalPrint | @@lcd.print()@@]]
* [[Reference/LiquidCrystalDisplay| @@lcd.Display()@@]]
* [[Reference/LiquidCrystalNoCursor | @@lcd.NoDisplay()@@]]

* [[Reference/LiquidCrystal | Liquid Crystal Library]]
Added lines 74-76:


September 21, 2010, at 08:59 AM by Christian Cerrito -
Changed lines 15-16 from:
(:include LiquidCrystalCircuit :)
to:
(:div class=BOM :)
!!!Hardware Required
* Arduino Board
* LCD Screen (compatible with Hitachi HD44780 driver)
* 10k Potentiometer
* breadboard
* hook-up wire

(:divend:)

!!!Circuit
(:div class=circuit :)
To wire your LED screen to your Arduino, connect the following pins:

* LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 11
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2

Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3).

[-click the images to enlarge-]

%height=300px%[[Attach:LCD_bb.png | Attach:LCD_bb.png]]
[-image developed using [[http://www.fritzing.org |Fritzing]]. For more circuit examples, see the [[http://fritzing.org/projects/|Fritzing project page]] -]

%height=300px%[[Attach:LCD_schem.png | Attach:LCD_schem.png]]

(:divend:)

Changed lines 52-66 from:
(:divend:)
to:
(:divend:)


!!!See Also:

* [[LiquidCrystalBlink | Blink]]: control of the block-style cursor.
* [[LiquidCrystalCursor | Cursor]]: control of the underscore-style cursor.
* [[LiquidCrystalDisplay| Display]]: quickly blank the display without losing what's on it.
* [[LiquidCrystalTextDirection | TextDirection]]: control which way text flows from the cursor.
* [[LiquidCrystalScroll| Scroll]]: scroll text left and right.
* [[LiquidCrystalSerial |Serial input]]: accepts serial input, displays it.
* [[LiquidCrystalSetCursor| SetCursor]]: set the cursor position.
* [[LiquidCrystalAutoscroll | Autoscroll]]: shift text right and left.

February 09, 2010, at 12:32 AM by Tom Igoe -
Changed lines 19-95 from:

%color=#7e7e7e%/*
%color=#7e7e7e% LiquidCrystal Library - TextDirection
%color=#7e7e7e%
%color=#7e7e7e% Demonstrates the use a 16x2 LCD display. The LiquidCrystal
%color=#7e7e7e% library works with all LCD displays that are compatible with the
%color=#7e7e7e% Hitachi HD44780 driver. There are many of them out there, and you
%color=#7e7e7e% can usually tell them by the 16-pin interface.
%color=#7e7e7e%
%color=#7e7e7e% This sketch demonstrates how to use leftToRight() and rightToLeft()
%color=#7e7e7e% to move the cursor.
%color=#7e7e7e%
%color=#7e7e7e% The circuit:
%color=#7e7e7e% * LCD RS pin to digital pin 12
%color=#7e7e7e% * LCD Enable pin to digital pin 11
%color=#7e7e7e% * LCD D4 pin to digital pin 5
%color=#7e7e7e% * LCD D5 pin to digital pin 4
%color=#7e7e7e% * LCD D6 pin to digital pin 3
%color=#7e7e7e% * LCD D7 pin to digital pin 2
%color=#7e7e7e% * 10K resistor:
%color=#7e7e7e% * ends to +5V and ground
%color=#7e7e7e% * wiper to LCD VO pin (pin 3)
%color=#7e7e7e%
%color=#7e7e7e% Library originally added 18 Apr 2008
%color=#7e7e7e% by David A. Mellis
%color=#7e7e7e% library modified 5 Jul 2009
%color=#7e7e7e% by Limor Fried (http://www.ladyada.net)
%color=#7e7e7e% example added 9 Jul 2009
%color=#7e7e7e% by Tom Igoe
%color=#7e7e7e% modified 25 July 2009
%color=#7e7e7e% by David A. Mellis
%color=#7e7e7e%
%color=#7e7e7e% http://www.arduino.cc/en/Tutorial/LiquidCrystal
%color=#7e7e7e%
%color=#7e7e7e% */

%color=#7e7e7e%// include the library code:
#include <%color=#cc6600%LiquidCrystal%%.h>

%color=#7e7e7e%// initialize the library with the numbers of the interface pins
%color=#cc6600%LiquidCrystal%% lcd(12, 11, 5, 4, 3, 2);

%color=#cc6600%int%% thisChar = %color=#006699%'a'%%;

%color=#cc6600%void%% %color=#cc6600%'''setup'''%%() {
%color=#7e7e7e%// set up the LCD's number of rows and columns:
lcd.%color=#cc6600%begin%%(16, 2);
%color=#7e7e7e%// turn on the cursor:
lcd.%color=#cc6600%cursor%%();
%color=#cc6600%Serial%%.%color=#cc6600%begin%%(9600);
}

%color=#cc6600%void%% %color=#cc6600%'''loop'''%%() {
%color=#7e7e7e%// reverse directions at 'm':
%color=#cc6600%if%% (thisChar == %color=#006699%'m'%%) {
%color=#7e7e7e%// go right for the next letter
lcd.%color=#cc6600%rightToLeft%%();
}
%color=#7e7e7e%// reverse again at 's':
%color=#cc6600%if%% (thisChar == %color=#006699%'s'%%) {
%color=#7e7e7e%// go left for the next letter
lcd.%color=#cc6600%leftToRight%%();
}
%color=#7e7e7e%// reset at 'z':
%color=#cc6600%if%% (thisChar > %color=#006699%'z'%%) {
%color=#7e7e7e%// go to (0,0):
lcd.%color=#cc6600%home%%();
%color=#7e7e7e%// start again at 0
thisChar = %color=#006699%'a'%%;
}
%color=#7e7e7e%// print the character
lcd.%color=#cc6600%print%%(thisChar, %color=#006699%BYTE%%);
%color=#7e7e7e%// wait a second:
%color=#cc6600%delay%%(1000);
%color=#7e7e7e%// increment the letter:
thisChar++;
}
to:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/TextDirection/TextDirection.pde lang=arduino tabwidth=4:)
August 05, 2009, at 05:10 PM by Tom Igoe -
Changed lines 13-14 from:
This sketch prints @@a@@ through @@l@@ right to left, then @m@ theough @@r@@ left to right, then @@s@@ through @@z@@ right to left again.
to:
This sketch prints @@a@@ through @@l@@ right to left, then @@m@@ theough @@r@@ left to right, then @@s@@ through @@z@@ right to left again.
August 05, 2009, at 05:10 PM by Tom Igoe -
Changed lines 13-14 from:
This sketch prints @a@ through @l@ right to left, then @m@ theough @r@ left to right, then @s@ through @z right to left again.
to:
This sketch prints @@a@@ through @@l@@ right to left, then @m@ theough @@r@@ left to right, then @@s@@ through @@z@@ right to left again.
August 05, 2009, at 04:58 PM by Tom Igoe -
Changed lines 1-3 from:


to:
''Examples > Libraries > LiquidCrystal''

!!LiquidCrystal - Text Direction (leftToRight() and rightToLeft()

The LiquidCrystal library allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.

This example sketch shows how to use the leftToRight() and rightToLeft() methods. These methods control which way text flows from the cursor.

@@rightToLeft()@@ causes text to flow to the left from the cursor, as if the display is right-justified.

@@leftToRight()@@ causes text to flow to the right from the cursor, as if the display is left-justified.

This sketch prints @a@ through @l@ right to left, then @m@ theough @r@ left to right, then @s@ through @z right to left again.

(:include LiquidCrystalCircuit :)

!!!Code
Changed line 21 from:
%color=#7e7e7e% LiquidCrystal Library - display() and noDisplay()
to:
%color=#7e7e7e% LiquidCrystal Library - TextDirection
Changed lines 28-30 from:
%color=#7e7e7e% This sketch prints "Hello World!" to the LCD and uses the
%color=#7e7e7e% display() and noDisplay() functions to turn on and off
%color=#7e7e7e% the display.
to:
%color=#7e7e7e% This sketch demonstrates how to use leftToRight() and rightToLeft()
%color=#7e7e7e% to move the cursor.
Deleted line 49:
Added line 52:
%color=#7e7e7e%
Added lines 61-62:
%color=#cc6600%int%% thisChar = %color=#006699%'a'%%;
Changed lines 66-67 from:
%color=#7e7e7e%// Print a message to the LCD.
lcd.%color=#cc6600%print%%(%color=#006699%"hello, world!"%%);
to:
%color=#7e7e7e%// turn on the cursor:
lcd.%color=#cc6600%cursor%%();
%color=#cc6600%Serial%%.%color=#cc6600%begin%%(9600);
Changed lines 72-77 from:
%color=#7e7e7e%// Turn off the display:
lcd.%color=#cc6600%noDisplay%%();
%color=#cc6600%delay%%(500);
%color=#7e7e7e%// Turn on the display:
lcd.%color=#cc6600%display%%();
%color=#cc6600%delay%%(500);
to:
%color=#7e7e7e%// reverse directions at 'm':
%color=#cc6600%if%% (thisChar == %color=#006699%'m'%%) {
%color=#7e7e7e%// go right for the next letter
lcd.%color=#cc6600%rightToLeft%%();
}
%color=#7e7e7e%// reverse again at 's':
%color=#cc6600%if%% (thisChar == %color=#006699%'s'%%) {
%color=#7e7e7e%// go left for the next letter
lcd.%color=#cc6600%leftToRight%%();
}
%color=#7e7e7e%// reset at 'z':
%color=#cc6600%if%% (thisChar > %color=#006699%'z'%%) {
%color=#7e7e7e%// go to (0,0):
lcd.%color=#cc6600%home%%();
%color=#7e7e7e%// start again at 0
thisChar = %color=#006699%'a'%%;
}
%color=#7e7e7e%// print the character
lcd.%color=#cc6600%print%%(thisChar, %color=#006699%BYTE%%);
%color=#7e7e7e%// wait a second:
%color=#cc6600%delay%%(1000);
%color=#7e7e7e%// increment the letter:
thisChar++;
Deleted lines 95-96:

August 05, 2009, at 04:54 PM by Tom Igoe -
Added lines 1-65:



(:div class=code :)

%color=#7e7e7e%/*
%color=#7e7e7e% LiquidCrystal Library - display() and noDisplay()
%color=#7e7e7e%
%color=#7e7e7e% Demonstrates the use a 16x2 LCD display. The LiquidCrystal
%color=#7e7e7e% library works with all LCD displays that are compatible with the
%color=#7e7e7e% Hitachi HD44780 driver. There are many of them out there, and you
%color=#7e7e7e% can usually tell them by the 16-pin interface.
%color=#7e7e7e%
%color=#7e7e7e% This sketch prints "Hello World!" to the LCD and uses the
%color=#7e7e7e% display() and noDisplay() functions to turn on and off
%color=#7e7e7e% the display.
%color=#7e7e7e%
%color=#7e7e7e% The circuit:
%color=#7e7e7e% * LCD RS pin to digital pin 12
%color=#7e7e7e% * LCD Enable pin to digital pin 11
%color=#7e7e7e% * LCD D4 pin to digital pin 5
%color=#7e7e7e% * LCD D5 pin to digital pin 4
%color=#7e7e7e% * LCD D6 pin to digital pin 3
%color=#7e7e7e% * LCD D7 pin to digital pin 2
%color=#7e7e7e% * 10K resistor:
%color=#7e7e7e% * ends to +5V and ground
%color=#7e7e7e% * wiper to LCD VO pin (pin 3)
%color=#7e7e7e%
%color=#7e7e7e% Library originally added 18 Apr 2008
%color=#7e7e7e% by David A. Mellis
%color=#7e7e7e% library modified 5 Jul 2009
%color=#7e7e7e% by Limor Fried (http://www.ladyada.net)
%color=#7e7e7e% example added 9 Jul 2009
%color=#7e7e7e% by Tom Igoe
%color=#7e7e7e% modified 25 July 2009
%color=#7e7e7e% by David A. Mellis

%color=#7e7e7e%
%color=#7e7e7e% http://www.arduino.cc/en/Tutorial/LiquidCrystal
%color=#7e7e7e% */

%color=#7e7e7e%// include the library code:
#include <%color=#cc6600%LiquidCrystal%%.h>

%color=#7e7e7e%// initialize the library with the numbers of the interface pins
%color=#cc6600%LiquidCrystal%% lcd(12, 11, 5, 4, 3, 2);

%color=#cc6600%void%% %color=#cc6600%'''setup'''%%() {
%color=#7e7e7e%// set up the LCD's number of rows and columns:
lcd.%color=#cc6600%begin%%(16, 2);
%color=#7e7e7e%// Print a message to the LCD.
lcd.%color=#cc6600%print%%(%color=#006699%"hello, world!"%%);
}

%color=#cc6600%void%% %color=#cc6600%'''loop'''%%() {
%color=#7e7e7e%// Turn off the display:
lcd.%color=#cc6600%noDisplay%%();
%color=#cc6600%delay%%(500);
%color=#7e7e7e%// Turn on the display:
lcd.%color=#cc6600%display%%();
%color=#cc6600%delay%%(500);
}


(:divend:)

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