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TextLCD.h@11:9ec02df863a1, 2013-02-05 (annotated)
- Committer:
- wim
- Date:
- Tue Feb 05 21:03:43 2013 +0000
- Revision:
- 11:9ec02df863a1
- Parent:
- 10:dd9b3a696acd
- Child:
- 12:6bf9d9957d31
Added User Defined Character support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
simon | 1:ac48b187213c | 1 | /* mbed TextLCD Library, for a 4-bit LCD based on HD44780 |
simon | 6:e4cb7ddee0d3 | 2 | * Copyright (c) 2007-2010, sford, http://mbed.org |
wim | 8:03116f75b66e | 3 | * 2013, WH, Updated LCD types and fixed lcd address issues |
simon | 1:ac48b187213c | 4 | * |
simon | 1:ac48b187213c | 5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
simon | 1:ac48b187213c | 6 | * of this software and associated documentation files (the "Software"), to deal |
simon | 1:ac48b187213c | 7 | * in the Software without restriction, including without limitation the rights |
simon | 1:ac48b187213c | 8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
simon | 1:ac48b187213c | 9 | * copies of the Software, and to permit persons to whom the Software is |
simon | 1:ac48b187213c | 10 | * furnished to do so, subject to the following conditions: |
simon | 2:227356c7d12c | 11 | * |
simon | 1:ac48b187213c | 12 | * The above copyright notice and this permission notice shall be included in |
simon | 1:ac48b187213c | 13 | * all copies or substantial portions of the Software. |
simon | 2:227356c7d12c | 14 | * |
simon | 1:ac48b187213c | 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
simon | 1:ac48b187213c | 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
simon | 1:ac48b187213c | 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
simon | 1:ac48b187213c | 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
simon | 1:ac48b187213c | 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
simon | 1:ac48b187213c | 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
simon | 1:ac48b187213c | 21 | * THE SOFTWARE. |
simon | 1:ac48b187213c | 22 | */ |
simon | 1:ac48b187213c | 23 | |
simon | 1:ac48b187213c | 24 | #ifndef MBED_TEXTLCD_H |
simon | 1:ac48b187213c | 25 | #define MBED_TEXTLCD_H |
simon | 1:ac48b187213c | 26 | |
simon | 1:ac48b187213c | 27 | #include "mbed.h" |
simon | 2:227356c7d12c | 28 | |
simon | 5:a53b3e2d6f1e | 29 | /** A TextLCD interface for driving 4-bit HD44780-based LCDs |
simon | 2:227356c7d12c | 30 | * |
wim | 10:dd9b3a696acd | 31 | * Currently supports 8x1, 8x2, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4 and 40x2 panels |
simon | 2:227356c7d12c | 32 | * |
simon | 2:227356c7d12c | 33 | * @code |
simon | 2:227356c7d12c | 34 | * #include "mbed.h" |
simon | 2:227356c7d12c | 35 | * #include "TextLCD.h" |
simon | 5:a53b3e2d6f1e | 36 | * |
wim | 11:9ec02df863a1 | 37 | * TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7 |
simon | 5:a53b3e2d6f1e | 38 | * |
simon | 2:227356c7d12c | 39 | * int main() { |
simon | 2:227356c7d12c | 40 | * lcd.printf("Hello World!\n"); |
simon | 2:227356c7d12c | 41 | * } |
simon | 2:227356c7d12c | 42 | * @endcode |
simon | 2:227356c7d12c | 43 | */ |
wim | 8:03116f75b66e | 44 | |
wim | 11:9ec02df863a1 | 45 | /** User Defined Chars 5x7 dots */ |
wim | 11:9ec02df863a1 | 46 | const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ |
wim | 11:9ec02df863a1 | 47 | const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø |
wim | 11:9ec02df863a1 | 48 | const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å |
wim | 11:9ec02df863a1 | 49 | const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ |
wim | 11:9ec02df863a1 | 50 | const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø |
wim | 11:9ec02df863a1 | 51 | const char udc_AA[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å |
wim | 11:9ec02df863a1 | 52 | |
wim | 11:9ec02df863a1 | 53 | const char udc_0[] = {0x18, 0x14, 0x12, 0x11, 0x12, 0x14, 0x18, 0x00}; // |> |
wim | 11:9ec02df863a1 | 54 | const char udc_1[] = {0x03, 0x05, 0x09, 0x11, 0x09, 0x05, 0x03, 0x00}; // <| |
wim | 11:9ec02df863a1 | 55 | const char udc_2[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // | |
wim | 11:9ec02df863a1 | 56 | const char udc_3[] = {0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00}; // || |
wim | 11:9ec02df863a1 | 57 | const char udc_4[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x00}; // ||| |
wim | 11:9ec02df863a1 | 58 | const char udc_5[] = {0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x00}; // = |
wim | 11:9ec02df863a1 | 59 | const char udc_6[] = {0x15, 0x0a, 0x15, 0x0a, 0x15, 0x0a, 0x15, 0x00}; // checkerboard |
wim | 11:9ec02df863a1 | 60 | const char udc_7[] = {0x10, 0x08, 0x04, 0x02, 0x01, 0x00, 0x10, 0x00}; // \ |
wim | 11:9ec02df863a1 | 61 | |
wim | 11:9ec02df863a1 | 62 | |
wim | 11:9ec02df863a1 | 63 | /** A TextLCD interface for driving 4-bit HD44780-based LCDs |
wim | 11:9ec02df863a1 | 64 | * |
wim | 11:9ec02df863a1 | 65 | * Currently supports 8x1, 8x2, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4 and 40x2 panels |
wim | 11:9ec02df863a1 | 66 | * |
wim | 11:9ec02df863a1 | 67 | */ |
simon | 1:ac48b187213c | 68 | class TextLCD : public Stream { |
simon | 1:ac48b187213c | 69 | public: |
simon | 1:ac48b187213c | 70 | |
simon | 2:227356c7d12c | 71 | /** LCD panel format */ |
simon | 1:ac48b187213c | 72 | enum LCDType { |
wim | 8:03116f75b66e | 73 | LCD8x1, /**< 8x1 LCD panel */ |
wim | 8:03116f75b66e | 74 | LCD8x2, /**< 8x2 LCD panel */ |
wim | 8:03116f75b66e | 75 | LCD16x2, /**< 16x2 LCD panel (default) */ |
wim | 8:03116f75b66e | 76 | LCD16x2B, /**< 16x2 LCD panel alternate addressing */ |
wim | 8:03116f75b66e | 77 | LCD16x4, /**< 16x4 LCD panel */ |
wim | 8:03116f75b66e | 78 | LCD20x2, /**< 20x2 LCD panel */ |
wim | 8:03116f75b66e | 79 | LCD20x4, /**< 20x4 LCD panel */ |
wim | 9:0893d986e717 | 80 | LCD24x2, /**< 24x2 LCD panel */ |
wim | 10:dd9b3a696acd | 81 | LCD24x4, /**< 24x4 LCD panel, special mode KS0078 */ |
wim | 9:0893d986e717 | 82 | LCD40x2 /**< 40x2 LCD panel */ |
simon | 1:ac48b187213c | 83 | }; |
simon | 1:ac48b187213c | 84 | |
wim | 10:dd9b3a696acd | 85 | /** LCD Cursor control */ |
wim | 10:dd9b3a696acd | 86 | enum LCDCursor { |
wim | 11:9ec02df863a1 | 87 | CurOff_BlkOff, |
wim | 11:9ec02df863a1 | 88 | CurOn_BlkOff, |
wim | 11:9ec02df863a1 | 89 | CurOff_BlkOn, |
wim | 11:9ec02df863a1 | 90 | CurOn_BlkOn, |
wim | 10:dd9b3a696acd | 91 | }; |
wim | 10:dd9b3a696acd | 92 | |
wim | 10:dd9b3a696acd | 93 | |
simon | 2:227356c7d12c | 94 | /** Create a TextLCD interface |
simon | 2:227356c7d12c | 95 | * |
simon | 2:227356c7d12c | 96 | * @param rs Instruction/data control line |
simon | 2:227356c7d12c | 97 | * @param e Enable line (clock) |
simon | 7:44f34c09bd37 | 98 | * @param d4-d7 Data lines for using as a 4-bit interface |
simon | 2:227356c7d12c | 99 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
simon | 2:227356c7d12c | 100 | */ |
simon | 7:44f34c09bd37 | 101 | TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2); |
simon | 2:227356c7d12c | 102 | |
simon | 2:227356c7d12c | 103 | #if DOXYGEN_ONLY |
simon | 2:227356c7d12c | 104 | /** Write a character to the LCD |
simon | 2:227356c7d12c | 105 | * |
simon | 2:227356c7d12c | 106 | * @param c The character to write to the display |
simon | 2:227356c7d12c | 107 | */ |
simon | 2:227356c7d12c | 108 | int putc(int c); |
simon | 2:227356c7d12c | 109 | |
simon | 2:227356c7d12c | 110 | /** Write a formated string to the LCD |
simon | 2:227356c7d12c | 111 | * |
simon | 2:227356c7d12c | 112 | * @param format A printf-style format string, followed by the |
simon | 2:227356c7d12c | 113 | * variables to use in formating the string. |
simon | 2:227356c7d12c | 114 | */ |
simon | 2:227356c7d12c | 115 | int printf(const char* format, ...); |
simon | 2:227356c7d12c | 116 | #endif |
simon | 2:227356c7d12c | 117 | |
simon | 2:227356c7d12c | 118 | /** Locate to a screen column and row |
simon | 2:227356c7d12c | 119 | * |
simon | 2:227356c7d12c | 120 | * @param column The horizontal position from the left, indexed from 0 |
simon | 2:227356c7d12c | 121 | * @param row The vertical position from the top, indexed from 0 |
simon | 2:227356c7d12c | 122 | */ |
simon | 1:ac48b187213c | 123 | void locate(int column, int row); |
simon | 2:227356c7d12c | 124 | |
wim | 10:dd9b3a696acd | 125 | |
wim | 10:dd9b3a696acd | 126 | /** Return the memoryaddress of screen column and row location |
wim | 10:dd9b3a696acd | 127 | * |
wim | 10:dd9b3a696acd | 128 | * @param column The horizontal position from the left, indexed from 0 |
wim | 10:dd9b3a696acd | 129 | * @param row The vertical position from the top, indexed from 0 |
wim | 10:dd9b3a696acd | 130 | * @param return The memoryaddress of screen column and row location |
wim | 10:dd9b3a696acd | 131 | */ |
wim | 9:0893d986e717 | 132 | int getAddress(int column, int row); |
wim | 10:dd9b3a696acd | 133 | |
wim | 10:dd9b3a696acd | 134 | |
wim | 10:dd9b3a696acd | 135 | /** Set the memoryaddress of screen column and row location |
wim | 10:dd9b3a696acd | 136 | * |
wim | 10:dd9b3a696acd | 137 | * @param column The horizontal position from the left, indexed from 0 |
wim | 10:dd9b3a696acd | 138 | * @param row The vertical position from the top, indexed from 0 |
wim | 10:dd9b3a696acd | 139 | */ |
wim | 9:0893d986e717 | 140 | void setAddress(int column, int row); |
wim | 9:0893d986e717 | 141 | |
wim | 10:dd9b3a696acd | 142 | |
simon | 2:227356c7d12c | 143 | /** Clear the screen and locate to 0,0 */ |
simon | 1:ac48b187213c | 144 | void cls(); |
simon | 2:227356c7d12c | 145 | |
wim | 10:dd9b3a696acd | 146 | /** Return the number of rows |
wim | 10:dd9b3a696acd | 147 | * |
wim | 10:dd9b3a696acd | 148 | * @param return The number of rows |
wim | 10:dd9b3a696acd | 149 | */ |
simon | 1:ac48b187213c | 150 | int rows(); |
wim | 10:dd9b3a696acd | 151 | |
wim | 10:dd9b3a696acd | 152 | /** Return the number of columns |
wim | 10:dd9b3a696acd | 153 | * |
wim | 10:dd9b3a696acd | 154 | * @param return The number of columns |
wim | 10:dd9b3a696acd | 155 | */ |
wim | 10:dd9b3a696acd | 156 | int columns(); |
simon | 2:227356c7d12c | 157 | |
wim | 11:9ec02df863a1 | 158 | /** Set the Cursormode |
wim | 11:9ec02df863a1 | 159 | * |
wim | 11:9ec02df863a1 | 160 | * @param show The Cursor mode (CurOff_BlkOff, CurOn_BlkOff, CurOff_BlkOn, CurOn_BlkOn) |
wim | 11:9ec02df863a1 | 161 | */ |
wim | 11:9ec02df863a1 | 162 | void cursor(LCDCursor show); |
wim | 11:9ec02df863a1 | 163 | |
wim | 11:9ec02df863a1 | 164 | |
wim | 11:9ec02df863a1 | 165 | /** Set User Defined Characters |
wim | 11:9ec02df863a1 | 166 | * |
wim | 11:9ec02df863a1 | 167 | * @param unsigned char c The Index of the UDC (0..7) |
wim | 11:9ec02df863a1 | 168 | * @param char *udc_char The bitpatterns for the UDC (8 bytes of 5 significant bits) |
wim | 11:9ec02df863a1 | 169 | */ |
wim | 11:9ec02df863a1 | 170 | void setUDC(unsigned char c, char *udc_data); |
wim | 11:9ec02df863a1 | 171 | |
simon | 1:ac48b187213c | 172 | protected: |
simon | 1:ac48b187213c | 173 | // Stream implementation functions |
simon | 1:ac48b187213c | 174 | virtual int _putc(int value); |
simon | 1:ac48b187213c | 175 | virtual int _getc(); |
simon | 1:ac48b187213c | 176 | |
wim | 8:03116f75b66e | 177 | int address(int column, int row); |
simon | 2:227356c7d12c | 178 | void character(int column, int row, int c); |
simon | 1:ac48b187213c | 179 | void writeByte(int value); |
simon | 1:ac48b187213c | 180 | void writeCommand(int command); |
simon | 1:ac48b187213c | 181 | void writeData(int data); |
simon | 1:ac48b187213c | 182 | |
simon | 1:ac48b187213c | 183 | DigitalOut _rs, _e; |
simon | 1:ac48b187213c | 184 | BusOut _d; |
simon | 1:ac48b187213c | 185 | LCDType _type; |
simon | 1:ac48b187213c | 186 | |
simon | 1:ac48b187213c | 187 | int _column; |
simon | 1:ac48b187213c | 188 | int _row; |
wim | 10:dd9b3a696acd | 189 | LCDCursor _cursor; |
simon | 1:ac48b187213c | 190 | }; |
simon | 1:ac48b187213c | 191 | |
simon | 1:ac48b187213c | 192 | #endif |