A TextLCD interface for driving 4-bit 16x2 KS0066U LCD
Dependents: KS0066U4_16x2 LAB05_Oppgave4 LAB05_Oppgave2 LAB05_Oppgave3 ... more
Import library
Public Member Functions |
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TextLCD (PinName rs, PinName rw, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, const char *name=NULL) | |
Create a
TextLCD
interface and initiated 16x2 char mode.
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void | lcdComand (unsigned char cmd) |
Writes a Command to the LCD-module.
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void | lcdData (unsigned char data) |
Writes charecters to the LCD display.
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void | gotoxy (int, int) |
moves text cursor to a screen column and row
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int | putc (int c) |
Write a character to the LCD.
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int | printf (const char *format,...) |
Write a formatted string to the LCD.
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Protected Member Functions |
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void | writeLcdBitD4toD7 (char data) |
Writes the low nible of data to the LCD-module.
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void | pulseEn () |
Causes the LCD-module to read the data on the data input pins EN = 1 for L-to-H / EN = 0 for H-to-L.
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void | init_4BitMode2LinesDisplayOn () |
Enable 4 bit mode From KS0066U Documentation.
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TextLCD.h@4:264d9b06bf60, 2015-09-20 (annotated)
- Committer:
- rlanghbv
- Date:
- Sun Sep 20 11:54:39 2015 +0000
- Revision:
- 4:264d9b06bf60
- Parent:
- 3:d2f70de20dbe
- Child:
- 6:c80d81c3be4d
Doc Update
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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rlanghbv | 4:264d9b06bf60 | 1 | /* mbed TextLCD Library,4-bit 16x2 LCD for KS0066U |
rlanghbv | 4:264d9b06bf60 | 2 | * Copyright (c) 2015 Rune Langøy |
rlanghbv | 4:264d9b06bf60 | 3 | * |
rlanghbv | 4:264d9b06bf60 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
rlanghbv | 4:264d9b06bf60 | 5 | * of this software and associated documentation files (the "Software"), to deal |
rlanghbv | 4:264d9b06bf60 | 6 | * in the Software without restriction, including without limitation the rights |
rlanghbv | 4:264d9b06bf60 | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
rlanghbv | 4:264d9b06bf60 | 8 | * copies of the Software, and to permit persons to whom the Software is |
rlanghbv | 4:264d9b06bf60 | 9 | * furnished to do so, subject to the following conditions: |
rlanghbv | 1:8902f6be12a5 | 10 | * |
rlanghbv | 4:264d9b06bf60 | 11 | * The above copyright notice and this permission notice shall be included in |
rlanghbv | 4:264d9b06bf60 | 12 | * all copies or substantial portions of the Software. |
rlanghbv | 4:264d9b06bf60 | 13 | * |
rlanghbv | 4:264d9b06bf60 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
rlanghbv | 4:264d9b06bf60 | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
rlanghbv | 4:264d9b06bf60 | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
rlanghbv | 4:264d9b06bf60 | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
rlanghbv | 4:264d9b06bf60 | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
rlanghbv | 4:264d9b06bf60 | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
rlanghbv | 4:264d9b06bf60 | 20 | * THE SOFTWARE. |
rlanghbv | 4:264d9b06bf60 | 21 | */ |
rlanghbv | 1:8902f6be12a5 | 22 | #ifndef LCD_H_ |
rlanghbv | 1:8902f6be12a5 | 23 | #define LCD_H_ |
rlanghbv | 4:264d9b06bf60 | 24 | |
rlanghbv | 4:264d9b06bf60 | 25 | /** A TextLCD interface for driving 4-bit 16x2 KS0066U LCD |
rlanghbv | 4:264d9b06bf60 | 26 | * |
rlanghbv | 4:264d9b06bf60 | 27 | * @code |
rlanghbv | 4:264d9b06bf60 | 28 | * #include "mbed.h" |
rlanghbv | 4:264d9b06bf60 | 29 | * #include "TextLCD.h" |
rlanghbv | 4:264d9b06bf60 | 30 | * |
rlanghbv | 4:264d9b06bf60 | 31 | * TextLCD lcd(D11,D10,D9,D5,D4,D3,D2); |
rlanghbv | 4:264d9b06bf60 | 32 | * int main() |
rlanghbv | 4:264d9b06bf60 | 33 | * { |
rlanghbv | 4:264d9b06bf60 | 34 | * lcd.gotoxy(1,1); |
rlanghbv | 4:264d9b06bf60 | 35 | * lcd.printf("Hello"); |
rlanghbv | 4:264d9b06bf60 | 36 | * |
rlanghbv | 4:264d9b06bf60 | 37 | * lcd.gotoxy(1,2); |
rlanghbv | 4:264d9b06bf60 | 38 | * lcd.printf(" World"); |
rlanghbv | 4:264d9b06bf60 | 39 | * |
rlanghbv | 4:264d9b06bf60 | 40 | * while(1) { |
rlanghbv | 4:264d9b06bf60 | 41 | * wait_ms(300); |
rlanghbv | 4:264d9b06bf60 | 42 | * } |
rlanghbv | 4:264d9b06bf60 | 43 | * } |
rlanghbv | 4:264d9b06bf60 | 44 | * @endcode |
rlanghbv | 4:264d9b06bf60 | 45 | */ |
rlanghbv | 1:8902f6be12a5 | 46 | class TextLCD : public Stream |
rlanghbv | 1:8902f6be12a5 | 47 | { |
rlanghbv | 1:8902f6be12a5 | 48 | public: |
rlanghbv | 1:8902f6be12a5 | 49 | |
rlanghbv | 4:264d9b06bf60 | 50 | |
rlanghbv | 4:264d9b06bf60 | 51 | /** Create a TextLCD interface and initiated 16x2 char mode |
rlanghbv | 4:264d9b06bf60 | 52 | * |
rlanghbv | 4:264d9b06bf60 | 53 | * @param rs Instruction/data control line |
rlanghbv | 4:264d9b06bf60 | 54 | * @param rw Read/Write (is forced to '1') |
rlanghbv | 4:264d9b06bf60 | 55 | * @param e Enable line (clock) |
rlanghbv | 4:264d9b06bf60 | 56 | * @param d4-d7 Data lines for using as a 4-bit interface |
rlanghbv | 4:264d9b06bf60 | 57 | */ |
rlanghbv | 3:d2f70de20dbe | 58 | TextLCD(PinName rs,PinName rw, PinName e, PinName d4, PinName d5, |
rlanghbv | 3:d2f70de20dbe | 59 | PinName d6, PinName d7) ; |
rlanghbv | 1:8902f6be12a5 | 60 | |
rlanghbv | 1:8902f6be12a5 | 61 | //Writes the low lible of data to the LCD-module data pins D4 to D7 |
rlanghbv | 1:8902f6be12a5 | 62 | void writeLcdBitD4toD7(char ); |
rlanghbv | 1:8902f6be12a5 | 63 | |
rlanghbv | 1:8902f6be12a5 | 64 | //Writes the byte comand to the LCD-module using 4 bits mode |
rlanghbv | 1:8902f6be12a5 | 65 | void lcdComand(unsigned char); |
rlanghbv | 1:8902f6be12a5 | 66 | |
rlanghbv | 1:8902f6be12a5 | 67 | //Writes charecters to the LCD display |
rlanghbv | 1:8902f6be12a5 | 68 | void lcdData(unsigned char); |
rlanghbv | 4:264d9b06bf60 | 69 | |
rlanghbv | 4:264d9b06bf60 | 70 | /** moves text cursor to a screen column and row |
rlanghbv | 4:264d9b06bf60 | 71 | * |
rlanghbv | 4:264d9b06bf60 | 72 | * @param column The horizontal position from the left, indexed from 0 |
rlanghbv | 4:264d9b06bf60 | 73 | * @param row The vertical position from the top, indexed from 0 |
rlanghbv | 4:264d9b06bf60 | 74 | */ |
rlanghbv | 4:264d9b06bf60 | 75 | void gotoxy(int , int ); |
rlanghbv | 1:8902f6be12a5 | 76 | |
rlanghbv | 4:264d9b06bf60 | 77 | protected: |
rlanghbv | 4:264d9b06bf60 | 78 | // EN = 1 for L-to-H / |
rlanghbv | 4:264d9b06bf60 | 79 | // EN = 0 for H-to-L |
rlanghbv | 4:264d9b06bf60 | 80 | // Causes the LCD-module to read the data on the data input pins |
rlanghbv | 4:264d9b06bf60 | 81 | void pulseEn(); |
rlanghbv | 1:8902f6be12a5 | 82 | //Enable 4 bit mode From KS0066U Documentation |
rlanghbv | 1:8902f6be12a5 | 83 | void init_4BitMode2LinesDisplayOn(); |
rlanghbv | 4:264d9b06bf60 | 84 | |
rlanghbv | 1:8902f6be12a5 | 85 | // Stream implementation functions |
rlanghbv | 4:264d9b06bf60 | 86 | /** Write a character to the LCD |
rlanghbv | 4:264d9b06bf60 | 87 | * |
rlanghbv | 4:264d9b06bf60 | 88 | * @param c The character to write to the display |
rlanghbv | 4:264d9b06bf60 | 89 | */ |
rlanghbv | 1:8902f6be12a5 | 90 | virtual int _putc(int value); |
rlanghbv | 1:8902f6be12a5 | 91 | virtual int _getc(); |
rlanghbv | 3:d2f70de20dbe | 92 | |
rlanghbv | 3:d2f70de20dbe | 93 | DigitalOut LCD_RS,LCD_RW,LCD_EN; |
rlanghbv | 3:d2f70de20dbe | 94 | DigitalOut LCD_D4,LCD_D5,LCD_D6,LCD_D7; |
rlanghbv | 1:8902f6be12a5 | 95 | }; |
rlanghbv | 1:8902f6be12a5 | 96 | |
rlanghbv | 1:8902f6be12a5 | 97 | #endif /* LCD_H_ */ |