16*2Lcd Display
TextLCD.h
- Committer:
- simon
- Date:
- 2010-05-27
- Revision:
- 1:ac48b187213c
- Parent:
- 0:edfb85c53631
- Child:
- 2:227356c7d12c
File content as of revision 1:ac48b187213c:
/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 * Copyright (c) 2007-2010, sford * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef MBED_TEXTLCD_H #define MBED_TEXTLCD_H #include "mbed.h" class TextLCD : public Stream { public: // the different LCDs and addressing modes /** Select the type of LCD */ enum LCDType { LCD16x2 , LCD16x2B , LCD20x2 , LCD20x4 }; TextLCD(PinName rs, PinName e, PinName d0, PinName d1, PinName d2, PinName d3, LCDType type = LCD16x2); // int putc(int c) inherited from Stream // int printf(...) inherited from Stream void character(int column, int row, int c); void locate(int column, int row); void cls(); int rows(); int columns(); protected: // Stream implementation functions virtual int _putc(int value); virtual int _getc(); // internal tx functions void writeByte(int value); void writeCommand(int command); void writeData(int data); int address(int column, int row); DigitalOut _rs, _e; BusOut _d; LCDType _type; // current row/column int _column; int _row; }; #endif