[136] | 1 | /*
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| 2 | LiquidCrystal Library - setCursor
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| 3 |
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| 4 | Demonstrates the use a 16x2 LCD display. The LiquidCrystal
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| 5 | library works with all LCD displays that are compatible with the
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| 6 | Hitachi HD44780 driver. There are many of them out there, and you
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| 7 | can usually tell them by the 16-pin interface.
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| 8 |
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| 9 | This sketch prints to all the positions of the LCD using the
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| 10 | setCursor(0 method:
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| 11 |
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| 12 | The circuit:
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| 13 | * LCD RS pin to digital pin 12
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| 14 | * LCD Enable pin to digital pin 11
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| 15 | * LCD D4 pin to digital pin 5
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| 16 | * LCD D5 pin to digital pin 4
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| 17 | * LCD D6 pin to digital pin 3
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| 18 | * LCD D7 pin to digital pin 2
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| 19 | * LCD R/W pin to ground
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| 20 | * 10K resistor:
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| 21 | * ends to +5V and ground
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| 22 | * wiper to LCD VO pin (pin 3)
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| 23 |
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| 24 | Library originally added 18 Apr 2008
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| 25 | by David A. Mellis
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| 26 | library modified 5 Jul 2009
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| 27 | by Limor Fried (http://www.ladyada.net)
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| 28 | example added 9 Jul 2009
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| 29 | by Tom Igoe
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| 30 | modified 22 Nov 2010
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| 31 | by Tom Igoe
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| 32 |
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| 33 | This example code is in the public domain.
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| 34 |
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| 35 | http://arduino.cc/en/Tutorial/LiquidCrystalSetCursor
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| 36 |
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| 37 | */
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| 38 |
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| 39 | // include the library code:
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| 40 | #include <LiquidCrystal.h>
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| 41 |
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| 42 | // these constants won't change. But you can change the size of
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| 43 | // your LCD using them:
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| 44 | const int numRows = 2;
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| 45 | const int numCols = 16;
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| 46 |
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| 47 | // initialize the library with the numbers of the interface pins
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| 48 | LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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| 49 |
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| 50 | void setup() {
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| 51 | // set up the LCD's number of columns and rows:
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| 52 | lcd.begin(numCols, numRows);
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| 53 | }
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| 54 |
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| 55 | void loop() {
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| 56 | // loop from ASCII 'a' to ASCII 'z':
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| 57 | for (int thisLetter = 'a'; thisLetter <= 'z'; thisLetter++) {
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| 58 | // loop over the columns:
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| 59 | for (int thisCol = 0; thisCol < numRows; thisCol++) {
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| 60 | // loop over the rows:
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| 61 | for (int thisRow = 0; thisRow < numCols; thisRow++) {
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| 62 | // set the cursor position:
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| 63 | lcd.setCursor(thisCol, thisRow);
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| 64 | // print the letter:
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| 65 | lcd.write(thisLetter);
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| 66 | delay(200);
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| 67 | }
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| 68 | }
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| 69 | }
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| 70 | }
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| 71 |
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| 72 |
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