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speedclock/Arduino_Libs/SSD1306Ascii-master/src/SSD1306AsciiSoftSpi.h
2018-07-07 19:17:51 +02:00

86 lines
2.7 KiB
C++

/* Arduino SSD1306Ascii Library
* Copyright (C) 2015 by William Greiman
*
* This file is part of the Arduino SSD1306Ascii Library
*
* 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 the Arduino SSD1306Ascii Library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/**
* @file SSD1306AsciiSoftSpi.h
* @brief Class for software SPI displays.
*/
#ifndef SSD1306AsciiSoftSpi_h
#define SSD1306AsciiSoftSpi_h
#include "SSD1306Ascii.h"
#include "utility/DigitalOutput.h"
/**
* @class SSD1306AsciiSoftSpi
* @brief Class for SPI displays using software SPI.
*/
class SSD1306AsciiSoftSpi : public SSD1306Ascii {
public:
/**
* @brief Initialize the display controller.
*
* @param[in] dev A device initialization structure.
* @param[in] cs The display controller chip select pin.
* @param[in] dc The display controller cdata/command pin.
* @param[in] clk The SPI clock pin.
* @param[in] data The SPI MOSI pin.
*/
void begin(const DevType* dev, uint8_t cs, uint8_t dc, uint8_t clk, uint8_t data) {
m_csPin.begin(cs);
m_dcPin.begin(dc);
m_clkPin.begin(clk);
m_dataPin.begin(data);
init(dev);
}
/**
* @brief Initialize the display controller.
*
* @param[in] dev A device initialization structure.
* @param[in] cs The display controller chip select pin.
* @param[in] dc The display controller cdata/command pin.
* @param[in] clk The SPI clock pin.
* @param[in] data The SPI MOSI pin.
* @param[in] rst The display controller reset pin.
*/
void begin(const DevType* dev, uint8_t cs, uint8_t dc, uint8_t clk, uint8_t data, uint8_t rst) {
pinMode(rst, OUTPUT);
digitalWrite(rst, LOW);
delay(10);
digitalWrite(rst, HIGH);
delay(10);
begin(dev, cs, dc, clk, data);
}
protected:
void writeDisplay(uint8_t b, uint8_t mode) {
m_dcPin.write(mode != SSD1306_MODE_CMD);
m_csPin.write(LOW);
for (uint8_t m = 0X80; m; m >>= 1) {
m_clkPin.write(LOW);
m_dataPin.write(m & b);
m_clkPin.write(HIGH);
}
m_csPin.write(HIGH);
}
private:
DigitalOutput m_csPin;
DigitalOutput m_dcPin;
DigitalOutput m_clkPin;
DigitalOutput m_dataPin;
};
#endif // SSD1306AsciiSoftSpi_h