- code cleaned up in many points for a better readability - removed SPIPreinit and I2CPreinit classes - moved various method implementations from .h files to the corresponding .cpp ones - the splash() and clearDisplay() methods now directly update the display; no more need to call the display() method after them
Dependencies: Adafruit_GFX mbed
Fork of Adafruit_GFX by
Adafruit_SSD1306.h
- Committer:
- frada
- Date:
- 2015-09-03
- Revision:
- 17:396d9b7eb7d5
- Parent:
- 15:77feec1c0684
File content as of revision 17:396d9b7eb7d5:
/********************************************************************* This is a library for our Monochrome OLEDs based on SSD1306 drivers Pick one up today in the adafruit shop! ------> http://www.adafruit.com/category/63_98 These displays use SPI to communicate, 4 or 5 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, check license.txt for more information All text above, and the splash screen must be included in any redistribution *********************************************************************/ /* * Modified by Neal Horman 7/14/2012 for use in mbed * Edited by Francesco Adamo 2015/09/03: * - code cleaned up in many points for a better readability * - removed SPIPreinit and I2CPreinit classes * - moved various method implementations from .h files to the corresponding .cpp ones * - the splash() and clearDisplay() methods now directly update the display; no more need to call the display() method after them * */ #ifndef _ADAFRUIT_SSD1306_H_ #define _ADAFRUIT_SSD1306_H_ #include "mbed.h" #include "Adafruit_GFX.h" #include <vector> #include <algorithm> #define SSD1306_SETCONTRAST 0x81 #define SSD1306_DISPLAYALLON_RESUME 0xA4 #define SSD1306_DISPLAYALLON 0xA5 #define SSD1306_NORMALDISPLAY 0xA6 #define SSD1306_INVERTDISPLAY 0xA7 #define SSD1306_DISPLAYOFF 0xAE #define SSD1306_DISPLAYON 0xAF #define SSD1306_SETDISPLAYOFFSET 0xD3 #define SSD1306_SETCOMPINS 0xDA #define SSD1306_SETVCOMDETECT 0xDB #define SSD1306_SETDISPLAYCLOCKDIV 0xD5 #define SSD1306_SETPRECHARGE 0xD9 #define SSD1306_SETMULTIPLEX 0xA8 #define SSD1306_SETLOWCOLUMN 0x00 #define SSD1306_SETHIGHCOLUMN 0x10 #define SSD1306_SETSTARTLINE 0x40 #define SSD1306_MEMORYMODE 0x20 #define SSD1306_COMSCANINC 0xC0 #define SSD1306_COMSCANDEC 0xC8 #define SSD1306_SEGREMAP 0xA0 #define SSD1306_CHARGEPUMP 0x8D #define SSD1306_EXTERNALVCC 0x1 #define SSD1306_SWITCHCAPVCC 0x2 // A DigitalOut sub-class that provides a constructed default state class DigitalOut2 : public DigitalOut { public: DigitalOut2(PinName pin, bool active = false) : DigitalOut(pin) { write(active); }; DigitalOut2& operator= (int value) { write(value); return *this; }; DigitalOut2& operator= (DigitalOut2& rhs) { write(rhs.read()); return *this; }; operator int() { return read(); }; }; /** The pure base class for the SSD1306 display driver. * * You should derive from this for a new transport interface type, * such as the SPI and I2C drivers. */ class Adafruit_SSD1306 : public Adafruit_GFX { protected: virtual void sendDisplayBuffer() = 0; DigitalOut2 rst; // the memory buffer for the LCD std::vector<uint8_t> buffer; public: Adafruit_SSD1306(PinName RST, uint8_t rawHeight = 32, uint8_t rawWidth = 128); void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); // These must be implemented in the derived transport driver virtual uint8_t command(uint8_t c) = 0; virtual void data(uint8_t c) = 0; virtual void drawPixel(int16_t x, int16_t y, uint16_t color); // Clear the display buffer void clearDisplay(void); virtual void invertDisplay(bool i); // Cause the display to be updated with the buffer content. void display(); // Fill the buffer with the AdaFruit splash screen. virtual void splash(); }; /** This is the SPI SSD1306 display driver transport class * */ class Adafruit_SSD1306_SPI : public Adafruit_SSD1306 { public: /* * Create a SSD1306 SPI transport display driver instance with the specified DC, RST, and CS pins, as well as the display dimensions * * Required parameters * @param MOSI (SPI MOSI pin name) * @param CLK (SPI clock pin name) * @param CS (Chip Select) pin name * @param DC (Data/Command) pin name * @param RST (Reset) pin name * * Optional parameters * @param rawHeight - the vertical number of pixels for the display, defaults to 32 * @param rawWidth - the horizontal number of pixels for the display, defaults to 128 */ Adafruit_SSD1306_SPI(PinName MOSI, PinName CLK, PinName CS, PinName DC, PinName RST, uint8_t rawHeight = 32, uint8_t rawWidth = 128); virtual uint8_t command(uint8_t); virtual void data(uint8_t); virtual void sendDisplayBuffer(void); protected: DigitalOut2 cs, dc; SPI mspi; }; /* * This is the I2C SSD1306 display driver transport class * */ class Adafruit_SSD1306_I2C : public Adafruit_SSD1306 { public: #define SSD_I2C_ADDRESS 0x78 /** Create a SSD1306 I2C transport display driver instance with the specified RST pin name, the I2C address, as well as the display dimensions * * Required parameters * @param i2c - A reference to an initialized I2C object * @param RST - The Reset pin name * * Optional parameters * @param i2cAddress - The i2c address of the display * @param rawHeight - The vertical number of pixels for the display, defaults to 32 * @param rawWidth - The horizonal number of pixels for the display, defaults to 128 */ Adafruit_SSD1306_I2C(PinName SDA, PinName SCL, PinName RST, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128); virtual uint8_t command(uint8_t c); virtual void data(uint8_t c); virtual void sendDisplayBuffer(); protected: I2C mi2c; uint8_t mi2cAddress; }; #endif