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CommandStation-EX/SSD1306Ascii.h
Neil McKechnie 8ed3bbd845 Support for multiple displays
Refactor display handling so DisplayInterface class passes the relevant commands to the relevant display objects.
2023-02-16 16:41:13 +00:00

101 lines
2.8 KiB
C++

/* Based on Arduino SSD1306Ascii Library, Copyright (C) 2015 by William Greiman
* Modifications (C) 2021 Neil McKechnie
*
* This file is part of CommandStation-EX
*
* This Library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This Library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef SSD1306Ascii_h
#define SSD1306Ascii_h
#include "Arduino.h"
#include "FSH.h"
#include "Display.h"
#include "I2CManager.h"
#include "DIAG.h"
#include "DisplayInterface.h"
// Uncomment to remove lower-case letters to save 108 bytes of flash
//#define NOLOWERCASE
//------------------------------------------------------------------------------
// Constructor
class SSD1306AsciiWire : public DisplayDevice {
public:
// Constructors
SSD1306AsciiWire(int width, int height); // Auto-detects I2C address
SSD1306AsciiWire(I2CAddress address, int width, int height);
// Initialize the display controller.
bool begin();
// Clear the display and set the cursor to (0, 0).
void clearNative() override;
// Set cursor to start of specified text line
void setRowNative(byte line) override;
// Write one character to OLED
size_t writeNative(uint8_t c) override;
bool isBusy() override { return requestBlock.isBusy(); }
uint16_t getNumCols() { return m_charsPerRow; }
uint16_t getNumRows() { return m_charsPerColumn; }
private:
// Cursor column.
uint8_t m_col;
// Cursor RAM row.
uint8_t m_row;
// Display width.
uint8_t m_displayWidth;
// Display height.
uint8_t m_displayHeight;
// Display width in characters
uint8_t m_charsPerRow;
// Display height in characters
uint8_t m_charsPerColumn;
// Column offset RAM to SEG.
uint8_t m_colOffset = 0;
// Current font.
const uint8_t* const m_font = System6x8;
// Flag to prevent calling begin() twice
uint8_t m_initialised = false;
// Only fixed size 6x8 fonts in a 6x8 cell are supported.
static const uint8_t fontWidth = 6;
static const uint8_t fontHeight = 8;
static const uint8_t m_fontFirstChar = 0x20;
static const uint8_t m_fontCharCount;
I2CAddress m_i2cAddr = 0;
I2CRB requestBlock;
uint8_t outputBuffer[fontWidth+1];
static const uint8_t blankPixels[];
static const uint8_t System6x8[];
static const uint8_t FLASH Adafruit128xXXinit[];
static const uint8_t FLASH SH1106_132x64init[];
};
#endif // SSD1306Ascii_h