lcd_spi.h

00001 /*
00002  * mbed LCDWindow library
00003 * Copyright (c) 2010 Hendrik Lipka
00004 * 
00005 * Permission is hereby granted, free of charge, to any person obtaining a copy
00006 * of this software and associated documentation files (the "Software"), to deal
00007 * in the Software without restriction, including without limitation the rights
00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 * copies of the Software, and to permit persons to whom the Software is
00010 * furnished to do so, subject to the following conditions:
00011 * 
00012 * The above copyright notice and this permission notice shall be included in
00013 * all copies or substantial portions of the Software.
00014 * 
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 * THE SOFTWARE.
00022 */
00023 
00024 #ifndef LCD_SPI_H_
00025 #define LCD_SPI_H_
00026 
00027 #include "lcd.h"
00028 
00029 #include "DigitalOut.h"
00030 #include "SPI.h"
00031 
00032 using namespace mbed; 
00033 
00034 /**
00035  * base class for all SPI based LCD displays.
00036  * Provides methods for sending commands and data to the display.
00037 */
00038 class SPILCDBase: public TextLCDBase
00039 {
00040     public:
00041         SPILCDBase(unsigned int columns, unsigned int rows, SPI *spi, PinName enable, PinName rs); 
00042 
00043     protected:
00044         void sendCmd(const unsigned char byte);
00045         void sendData(const unsigned char byte);
00046         
00047         void sendByte(const unsigned char byte);
00048 
00049         SPI* _spi;
00050         DigitalOut  *_enable, *_rs;
00051 };
00052 
00053 #endif