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https://github.com/DCC-EX/CommandStation-EX.git
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43319fd3dd
Add new read/write functions to I2CManager class, and modify the LCD, OLED and PWM classes to use them effectively.
98 lines
3.1 KiB
C++
98 lines
3.1 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 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 "SSD1306font.h"
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#include "SSD1306init.h"
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class SSD1306AsciiWire : public Print {
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public:
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using Print::write;
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SSD1306AsciiWire() {}
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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 clear();
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// Clear a region of the display.
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void clear(uint8_t c0, uint8_t c1, uint8_t r0, uint8_t r1);
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// The current column in pixels.
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inline uint8_t col() const { return m_col; }
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// The display hight in pixels.
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inline uint8_t displayHeight() const { return m_displayHeight; }
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// The display height in rows with eight pixels to a row.
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inline uint8_t displayRows() const { return m_displayHeight / 8; }
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// The display width in pixels.
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inline uint8_t displayWidth() const { return m_displayWidth; }
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// Set the cursor position to (0, 0).
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inline void home() { setCursor(0, 0); }
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// Initialize the display controller.
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void init(const DevType* dev);
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// the current row number with eight pixels to a row.
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inline uint8_t row() const { return m_row; }
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/**
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* @brief Set the display contrast.
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*
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* @param[in] value The contrast level in th range 0 to 255.
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*/
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void setContrast(uint8_t value);
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/**
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* @brief Set the cursor position.
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*
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* @param[in] col The column number in pixels.
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* @param[in] row the row number in eight pixel rows.
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*/
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void setCursor(uint8_t col, uint8_t row);
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/**
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* @brief Set the current font.
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*
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* @param[in] font Pointer to a font table.
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*/
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void setFont(const uint8_t* font);
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/**
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* @brief Display a character.
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*
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* @param[in] c The character to display.
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* @return one for success else zero.
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*/
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size_t write(uint8_t c);
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private:
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uint8_t m_col; // Cursor column.
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uint8_t m_row; // Cursor RAM row.
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uint8_t m_displayWidth; // Display width.
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uint8_t m_displayHeight; // Display height.
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uint8_t m_colOffset; // Column offset RAM to SEG.
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const uint8_t* m_font = NULL; // Current font.
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// Only fixed size 5x7 fonts in a 6x8 cell are supported.
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const uint8_t fontWidth = 5;
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const uint8_t fontHeight = 7;
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const uint8_t letterSpacing = 1;
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uint8_t m_fontFirstChar;
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uint8_t m_fontCharCount;
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uint8_t m_i2cAddr;
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static const uint8_t blankPixels[];
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};
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#endif // SSD1306Ascii_h
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