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+ /*
+ LiquidCrystal Library - TextDirection
+
+ Demonstrates the use a 16x2 LCD display. The LiquidCrystal
+ library works with all 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 sketch demonstrates how to use leftToRight() and rightToLeft()
+ to move the cursor.
+
+ The circuit:
+ =================================
+ LCD pin Connect to
+ ---------------------------------
+ 01 - GND GND, pot
+ 02 - VCC +5V, pot
+ 03 - Contrast Pot wiper
+ 04 - RS Pin8 (P2.0)
+ 05 - R/W GND
+ 06 - EN Pin9 (P2.1)
+ 07 - DB0 GND
+ 08 - DB1 GND
+ 09 - DB2 GND
+ 10 - DB3 GND
+ 11 - DB4 Pin10 (P2.2)
+ 12 - DB5 Pin11 (P2.3)
+ 13 - DB6 Pin12 (P2.4)
+ 14 - DB7 Pin13 (P2.5)
+ 15 - BL+ +5V
+ 16 - BL- GND
+ =================================
+
+ Library originally added 18 Apr 2008
+ by David A. Mellis
+ library modified 5 Jul 2009
+ by Limor Fried (http://www.ladyada.net)
+ example added 9 Jul 2009
+ by Tom Igoe
+ modified 22 Nov 2010
+ by Tom Igoe
+
+ This example code is in the public domain.
+
+ http://www.arduino.cc/en/Tutorial/LiquidCrystal
+
+ */
+
+// include the library code:
+#include <LiquidCrystal.h>
+
+// initialize the library with the numbers of the interface pins
+LiquidCrystal lcd(P2_0, P2_1, P2_2, P2_3, P2_4, P2_5);
+
+int thisChar = 'a';
+
+void setup() {
+ // set up the LCD's number of columns and rows:
+ lcd.begin(16, 2);
+ // turn on the cursor:
+ lcd.cursor();
+ Serial.begin(9600);
+}
+
+void loop() {
+ // reverse directions at 'm':
+ if (thisChar == 'm') {
+ // go right for the next letter
+ lcd.rightToLeft();
+ }
+ // reverse again at 's':
+ if (thisChar == 's') {
+ // go left for the next letter
+ lcd.leftToRight();
+ }
+ // reset at 'z':
+ if (thisChar > 'z') {
+ // go to (0,0):
+ lcd.home();
+ // start again at 0
+ thisChar = 'a';
+ }
+ // print the character
+ lcd.write(thisChar);
+ // wait a second:
+ delay(1000);
+ // increment the letter:
+ thisChar++;
+}
+
+
+
+
+
+
+
+