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38be1d6152
* Refactor SSD and LCD drivers Rework display drivers to use inheritance and to remove unused functionality. The changes here were previously in neil-hal branch but have been separated out because of the amount of changes in neil-hal. * Update version.h
54 lines
2.3 KiB
C
54 lines
2.3 KiB
C
/*
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* © 2021, Chris Harlow, Neil McKechnie. All rights reserved.
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*
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* This file is part of CommandStation-EX
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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////////////////////////////////////////////////////////////////////////////////////
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// This implementation is designed to be #included ONLY ONCE in the .ino
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//
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// It will create a driver implemntation and a shim class implementation.
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// This means that other classes can reference the shim without knowing
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// which library is involved.
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////////////////////////////////////////////////////////////////////////////////////
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#ifndef LCD_Implementation_h
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#define LCD_Implementation_h
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#include "LCDDisplay.h"
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#include "SSD1306Ascii.h"
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#include "LiquidCrystal_I2C.h"
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// Implement the LCDDisplay shim class as a singleton.
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// The DisplayInterface class implements a displayy handler with no code (null device);
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// The LCDDisplay class sub-classes DisplayInterface to provide the common display code;
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// Then LCDDisplay class is subclassed to the specific device type classes:
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// SSD1306AsciiWire for I2C OLED driver with SSD1306 or SH1106 controllers;
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// LiquidCrystal_I2C for I2C LCD driver for HD44780 with PCF8574 'backpack'.
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#if defined(OLED_DRIVER)
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#define CONDITIONAL_LCD_START for (DisplayInterface * dummy=new SSD1306AsciiWire(OLED_DRIVER);dummy!=NULL; dummy=dummy->loop2(true))
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#elif defined(LCD_DRIVER)
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#define CONDITIONAL_LCD_START for (DisplayInterface * dummy=new LiquidCrystal_I2C(LCD_DRIVER);dummy!=NULL; dummy=dummy->loop2(true))
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#else
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// Create null display handler just in case someone calls lcdDisplay->something without checking if lcdDisplay is NULL!
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#define CONDITIONAL_LCD_START { new DisplayInterface(); }
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#endif
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#endif // LCD_Implementation_h
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