mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
/* Based on Arduino SSD1306Ascii Library, Copyright (C) 2015 by William Greiman
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* Modifications (C) 2021 Neil McKechnie
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*
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* This file is part of CommandStation-EX
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*
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* This Library 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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* This Library 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 this software. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef SSD1306Ascii_h
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#define SSD1306Ascii_h
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#include "Arduino.h"
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#include "FSH.h"
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#include "LCDDisplay.h"
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#include "I2CManager.h"
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#include "DIAG.h"
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// Uncomment to remove lower-case letters to save 108 bytes of flash
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//#define NOLOWERCASE
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//------------------------------------------------------------------------------
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// Device initialization structure.
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struct DevType {
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/* Pointer to initialization command bytes. */
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const uint8_t* initcmds;
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/* Number of initialization bytes */
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const uint8_t initSize;
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/* Width of the display in pixels */
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const uint8_t lcdWidth;
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/** Height of the display in pixels. */
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const uint8_t lcdHeight;
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/* Column offset RAM to display. Used to pick start column of SH1106. */
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const uint8_t colOffset;
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};
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// Constructor
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class SSD1306AsciiWire : public LCDDisplay {
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public:
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// Constructor
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SSD1306AsciiWire(int width, int height);
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// Initialize the display controller.
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void begin(const DevType* dev, uint8_t i2cAddr);
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// Clear the display and set the cursor to (0, 0).
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void clearNative() override;
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// Set cursor to start of specified text line
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void setRowNative(byte line) override;
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// Initialize the display controller.
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void init(const DevType* dev);
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// Write one character to OLED
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size_t writeNative(uint8_t c) override;
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// Display characteristics / initialisation
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static const DevType FLASH Adafruit128x32;
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static const DevType FLASH Adafruit128x64;
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static const DevType FLASH SH1106_132x64;
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bool isBusy() override { return requestBlock.isBusy(); }
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private:
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// Cursor column.
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uint8_t m_col;
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// Cursor RAM row.
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uint8_t m_row;
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// Display width.
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uint8_t m_displayWidth;
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// Display height.
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uint8_t m_displayHeight;
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// Column offset RAM to SEG.
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uint8_t m_colOffset = 0;
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// Current font.
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const uint8_t* const m_font = System5x7;
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// Only fixed size 5x7 fonts in a 6x8 cell are supported.
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static const uint8_t fontWidth = 5;
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static const uint8_t fontHeight = 7;
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static const uint8_t letterSpacing = 1;
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static const uint8_t m_fontFirstChar = 0x20;
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static const uint8_t m_fontCharCount = 0x61;
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uint8_t m_i2cAddr;
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I2CRB requestBlock;
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uint8_t outputBuffer[fontWidth+letterSpacing+1];
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static const uint8_t blankPixels[];
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static const uint8_t System5x7[];
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static const uint8_t FLASH Adafruit128xXXinit[];
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static const uint8_t FLASH SH1106_132x64init[];
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};
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#endif // SSD1306Ascii_h
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