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Rev | Author | Line No. | Line |
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1702 | - | 1 | /* Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com */ |
2 | //HD44780 compatible LCD display via MAX3421E GPOUT support header |
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3 | //pinout: D[4-7] -> GPOUT[4-7], RS-> GPOUT[2], E ->GPOUT[3] |
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4 | // |
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5 | //this code is heavily borrowed from official Arduino source v.0017 |
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6 | // link to original http://code.google.com/p/arduino/source/browse/trunk/hardware/libraries/LiquidCrystal/LiquidCrystal.h |
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7 | // |
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8 | #ifndef _Max_LCD_h_ |
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9 | #define _Max_LCD_h_ |
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10 | |||
11 | #include <inttypes.h> |
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12 | #include "Print.h" |
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13 | |||
14 | // commands |
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15 | #define LCD_CLEARDISPLAY 0x01 |
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16 | #define LCD_RETURNHOME 0x02 |
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17 | #define LCD_ENTRYMODESET 0x04 |
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18 | #define LCD_DISPLAYCONTROL 0x08 |
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19 | #define LCD_CURSORSHIFT 0x10 |
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20 | #define LCD_FUNCTIONSET 0x20 |
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21 | #define LCD_SETCGRAMADDR 0x40 |
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22 | #define LCD_SETDDRAMADDR 0x80 |
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23 | |||
24 | // flags for display entry mode |
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25 | #define LCD_ENTRYRIGHT 0x00 |
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26 | #define LCD_ENTRYLEFT 0x02 |
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27 | #define LCD_ENTRYSHIFTINCREMENT 0x01 |
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28 | #define LCD_ENTRYSHIFTDECREMENT 0x00 |
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29 | |||
30 | // flags for display on/off control |
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31 | #define LCD_DISPLAYON 0x04 |
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32 | #define LCD_DISPLAYOFF 0x00 |
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33 | #define LCD_CURSORON 0x02 |
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34 | #define LCD_CURSOROFF 0x00 |
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35 | #define LCD_BLINKON 0x01 |
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36 | #define LCD_BLINKOFF 0x00 |
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37 | |||
38 | // flags for display/cursor shift |
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39 | #define LCD_DISPLAYMOVE 0x08 |
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40 | #define LCD_CURSORMOVE 0x00 |
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41 | #define LCD_MOVERIGHT 0x04 |
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42 | #define LCD_MOVELEFT 0x00 |
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43 | |||
44 | // flags for function set |
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45 | #define LCD_8BITMODE 0x10 |
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46 | #define LCD_4BITMODE 0x00 |
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47 | #define LCD_2LINE 0x08 |
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48 | #define LCD_1LINE 0x00 |
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49 | #define LCD_5x10DOTS 0x04 |
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50 | #define LCD_5x8DOTS 0x00 |
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51 | |||
52 | class Max_LCD : public Print { |
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53 | public: |
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54 | Max_LCD(); |
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55 | void init(); |
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56 | void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS); |
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57 | void clear(); |
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58 | void home(); |
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59 | void noDisplay(); |
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60 | void display(); |
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61 | void noBlink(); |
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62 | void blink(); |
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63 | void noCursor(); |
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64 | void cursor(); |
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65 | void scrollDisplayLeft(); |
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66 | void scrollDisplayRight(); |
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67 | void leftToRight(); |
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68 | void rightToLeft(); |
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69 | void autoscroll(); |
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70 | void noAutoscroll(); |
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71 | void createChar(uint8_t, uint8_t[]); |
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72 | void setCursor(uint8_t, uint8_t); |
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73 | virtual void write(uint8_t); |
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74 | void command(uint8_t); |
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75 | private: |
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76 | void sendbyte( uint8_t val ); |
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77 | uint8_t _displayfunction; //tokill |
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78 | uint8_t _displaycontrol; |
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79 | uint8_t _displaymode; |
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80 | uint8_t _initialized; |
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81 | uint8_t _numlines,_currline; |
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82 | }; |
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83 | |||
84 | |||
85 | |||
86 | |||
87 | #endif |