root / arduino-1.0 / libraries / LiquidCrystal / examples / setCursor / setCursor.ino @ 58d82c77
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1 | 58d82c77 | Tom Mullins | /* |
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2 | LiquidCrystal Library - setCursor |
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3 | |||
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 | |||
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 | |||
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 | |||
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 | |||
33 | This example code is in the public domain. |
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34 | |||
35 | http://www.arduino.cc/en/Tutorial/LiquidCrystal |
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36 | */ |
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37 | |||
38 | // include the library code: |
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39 | #include <LiquidCrystal.h> |
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40 | |||
41 | // these constants won't change. But you can change the size of |
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42 | // your LCD using them: |
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43 | const int numRows = 2; |
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44 | const int numCols = 16; |
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45 | |||
46 | // initialize the library with the numbers of the interface pins |
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47 | LiquidCrystal lcd(12, 11, 5, 4, 3, 2); |
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48 | |||
49 | void setup() { |
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50 | // set up the LCD's number of columns and rows: |
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51 | lcd.begin(numCols,numRows); |
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52 | } |
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53 | |||
54 | void loop() { |
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55 | // loop from ASCII 'a' to ASCII 'z': |
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56 | for (int thisLetter = 'a'; thisLetter <= 'z'; thisLetter++) { |
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57 | // loop over the columns: |
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58 | for (int thisCol = 0; thisCol < numRows; thisCol++) { |
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59 | // loop over the rows: |
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60 | for (int thisRow = 0; thisRow < numCols; thisRow++) { |
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61 | // set the cursor position: |
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62 | lcd.setCursor(thisRow,thisCol); |
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63 | // print the letter: |
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64 | lcd.write(thisLetter); |
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65 | delay(200); |
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66 | } |
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67 | } |
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68 | } |
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69 | } |
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70 |