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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 |