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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_HD44780_DIRECT_CONNECT_H_
00028 #define MHV_DISPLAY_HD44780_DIRECT_CONNECT_H_
00029 
00030 #include <MHV_Display_HD44780.h>
00031 
00032 class MHV_Display_HD44780_Direct_Connect : public MHV_Display_HD44780 {
00033 protected:
00034         volatile uint8_t        *_dataDir;
00035         volatile uint8_t        *_dataOut;
00036         volatile uint8_t        *_dataIn;
00037         uint8_t                         _dataPin;
00038         uint8_t                         _dataMask;
00039         volatile uint8_t        *_controlOut;
00040         uint8_t                         _controlPin;
00041         volatile uint8_t        *_visualOut;
00042         uint8_t                         _visualPin;
00043 
00044         uint8_t                         _brightness;
00045         uint8_t                         _contrast;
00046 
00047         void writeByte(uint8_t byte, bool rs);
00048         void writeNibble(uint8_t nibble, bool rs);
00049         uint8_t readByte(bool rs);
00050         uint8_t readNibble(bool rs);
00051         bool isBusy();
00052         void delay(MHV_HD44780_COMMAND command);
00053 
00054 public:
00055         MHV_Display_HD44780_Direct_Connect(
00056                         MHV_DECLARE_PIN(data),
00057                         MHV_DECLARE_PIN(control),
00058                         MHV_DECLARE_PIN(visual),
00059                         uint8_t colCount, uint16_t rowCount, MHV_RingBuffer &txBuffers);
00060         MHV_Display_HD44780_Direct_Connect(
00061                         MHV_DECLARE_PIN(data),
00062                         MHV_DECLARE_PIN(control),
00063                         uint8_t colCount, uint16_t rowCount, MHV_RingBuffer &txBuffers);
00064         void setBacklight(uint8_t value);
00065         void setContrast(uint8_t value);
00066         void tickPWM();
00067         void init(bool multiLine, bool bigFont, bool cursorOn, bool cursorBlink,
00068                                 bool left2right, bool scroll);
00069 };
00070 
00071 #endif /* MHV_DISPLAY_HD44780_DIRECT_CONNECT_H_ */