85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
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/* Arduino SSD1306Ascii Library
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* Copyright (C) 2015 by William Greiman
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*
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* This file is part of the Arduino SSD1306Ascii Library
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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 the Arduino SSD1306Ascii Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file SSD1306AsciiAvrI2c.h
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* @brief Class for I2C displays using AvrI2c.
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*/
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#ifndef SSD1306AsciiAvrI2c_h
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#define SSD1306AsciiAvrI2c_h
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#include "utility/AvrI2c.h"
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#include "SSD1306Ascii.h"
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/**
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* @class SSD1306AsciiAvrI2c
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* @brief Class for I2C displays on AVR.
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*
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* Uses the AvrI2c class that is smaller and faster than the
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* Wire library.
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*/
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class SSD1306AsciiAvrI2c : public SSD1306Ascii {
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public:
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/**
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* @brief Initialize the display controller.
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*
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* @param[in] dev A device initialization structure.
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* @param[in] i2cAddr The I2C address of the display controller.
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*/
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void begin(const DevType* dev, uint8_t i2cAddr) {
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m_nData = 0;
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m_i2cAddr = i2cAddr;
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m_i2c.begin(true);
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init(dev);
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}
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/**
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* @brief Initialize the display controller.
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*
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* @param[in] dev A device initialization structure.
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* @param[in] i2cAddr The I2C address of the display controller.
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* @param[in] rst The display controller reset pin.
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*/
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void begin(const DevType* dev, uint8_t i2cAddr, uint8_t rst) {
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oledReset(rst);
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begin(dev, i2cAddr);
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}
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protected:
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void writeDisplay(uint8_t b, uint8_t mode) {
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if ((m_nData && mode == SSD1306_MODE_CMD)) {
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m_i2c.stop();
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m_nData = 0;
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}
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if (m_nData == 0) {
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m_i2c.start((m_i2cAddr << 1) | I2C_WRITE);
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m_i2c.write(mode == SSD1306_MODE_CMD ? 0X00 : 0X40);
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}
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m_i2c.write(b);
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if (mode == SSD1306_MODE_RAM_BUF) {
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m_nData++;
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}else {
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m_i2c.stop();
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m_nData = 0;
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}
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}
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private:
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AvrI2c m_i2c;
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uint8_t m_i2cAddr;
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uint8_t m_nData;
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};
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#endif // SSD1306AsciiAvrI2c_h
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