87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
/* 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 SSD1306AsciiSoftSpi.h
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* @brief Class for software SPI displays.
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*/
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#ifndef SSD1306AsciiSoftSpi_h
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#define SSD1306AsciiSoftSpi_h
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#include "SSD1306Ascii.h"
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#include "utility/DigitalOutput.h"
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/**
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* @class SSD1306AsciiSoftSpi
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* @brief Class for SPI displays using software SPI.
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*/
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class SSD1306AsciiSoftSpi : 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] cs The display controller chip select pin.
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* @param[in] dc The display controller cdata/command pin.
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* @param[in] clk The SPI clock pin.
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* @param[in] data The SPI MOSI pin.
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*/
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void begin(const DevType* dev, uint8_t cs, uint8_t dc, uint8_t clk, uint8_t data) {
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m_csPin.begin(cs);
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m_dcPin.begin(dc);
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m_clkPin.begin(clk);
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m_dataPin.begin(data);
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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] cs The display controller chip select pin.
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* @param[in] dc The display controller cdata/command pin.
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* @param[in] clk The SPI clock pin.
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* @param[in] data The SPI MOSI pin.
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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 cs, uint8_t dc, uint8_t clk, uint8_t data, uint8_t rst) {
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pinMode(rst, OUTPUT);
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digitalWrite(rst, LOW);
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delay(10);
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digitalWrite(rst, HIGH);
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delay(10);
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begin(dev, cs, dc, clk, data);
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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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m_dcPin.write(mode != SSD1306_MODE_CMD);
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m_csPin.write(LOW);
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for (uint8_t m = 0X80; m; m >>= 1) {
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m_clkPin.write(LOW);
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m_dataPin.write(m & b);
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m_clkPin.write(HIGH);
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}
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m_csPin.write(HIGH);
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}
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private:
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DigitalOutput m_csPin;
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DigitalOutput m_dcPin;
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DigitalOutput m_clkPin;
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DigitalOutput m_dataPin;
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};
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#endif // SSD1306AsciiSoftSpi_h
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