MHVLib
20111011
An efficiency oriented runtime library for AVR microcontrollers
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00001 /* 00002 * Copyright (c) 2011, Make, Hack, Void Inc 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * * Redistributions of source code must retain the above copyright 00008 * notice, this list of conditions and the following disclaimer. 00009 * * Redistributions in binary form must reproduce the above copyright 00010 * notice, this list of conditions and the following disclaimer in the 00011 * documentation and/or other materials provided with the distribution. 00012 * * Neither the name of the Make, Hack, Void nor the 00013 * names of its contributors may be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 00017 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00018 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00019 * DISCLAIMED. IN NO EVENT SHALL MAKE, HACK, VOID BE LIABLE FOR ANY 00020 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00021 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00022 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00023 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00024 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00025 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00026 */ 00027 #ifndef MHV_DISPLAY_CHARACTER_H_ 00028 #define MHV_DISPLAY_CHARACTER_H_ 00029 00030 #include <MHV_Device_TX.h> 00031 00032 class MHV_Display_Character : public MHV_Device_TX { 00033 protected: 00034 uint16_t _rowCount; 00035 uint16_t _colCount; 00036 int16_t _txOffset; 00037 uint16_t _currentRow; 00038 uint16_t _currentCol; 00039 bool _wrap; 00040 bool _scroll; 00041 00042 00043 public: 00044 MHV_Display_Character(uint16_t cols, uint16_t rows, MHV_RingBuffer *txBuffer); 00045 void writeChar(char character); 00046 void scrollVertically(); 00047 void setCursor(uint16_t col, uint16_t row); 00048 void runTxBuffers(); 00049 bool txAnimation(uint16_t row); 00050 uint8_t getWidth(); 00051 uint8_t getHeight(); 00052 bool writeString(int16_t *offsetX, uint16_t offsetY, const char *string); 00053 bool writeBuffer(int16_t *offsetX, uint16_t offsetY, const char *buffer, uint16_t length); 00054 bool writeString_P(int16_t *offsetX, uint16_t offsetY, PGM_P string); 00055 bool writeBuffer_P(int16_t *offsetX, uint16_t offsetY, PGM_P buffer, uint16_t length); 00056 void setWrap(bool shouldWrap); 00057 void setScroll(bool shouldScroll); 00058 // Subclasses must implement these 00059 virtual void _writeChar(char character)=0; 00060 virtual char _readChar()=0; 00061 virtual void _setCursor(uint16_t col, uint16_t row)=0; 00062 virtual void clear()=0; 00063 }; 00064 00065 #endif /* MHV_HD44780_H_ */