Adafruit_GrayOLED.h

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#ifndef _Adafruit_GRAYOLED_H_
#define _Adafruit_GRAYOLED_H_

#if !defined(__AVR_ATtiny85__) // Not for ATtiny, at all

#include <Adafruit_GFX.h>
#include <Adafruit_I2CDevice.h>
#include <Adafruit_SPIDevice.h>
#include <SPI.h>
#include <Wire.h>

#define GRAYOLED_SETCONTRAST 0x81   
#define GRAYOLED_NORMALDISPLAY 0xA6 
#define GRAYOLED_INVERTDISPLAY 0xA7 

#define MONOOLED_BLACK 0   
#define MONOOLED_WHITE 1   
#define MONOOLED_INVERSE 2 


class Adafruit_GrayOLED : public Adafruit_GFX {
public:
  Adafruit_GrayOLED(uint8_t bpp, uint16_t w, uint16_t h, TwoWire *twi = &Wire,
                    int8_t rst_pin = -1, uint32_t preclk = 400000,
                    uint32_t postclk = 100000);
  Adafruit_GrayOLED(uint8_t bpp, uint16_t w, uint16_t h, int8_t mosi_pin,
                    int8_t sclk_pin, int8_t dc_pin, int8_t rst_pin,
                    int8_t cs_pin);
  Adafruit_GrayOLED(uint8_t bpp, uint16_t w, uint16_t h, SPIClass *spi,
                    int8_t dc_pin, int8_t rst_pin, int8_t cs_pin,
                    uint32_t bitrate = 8000000UL);

  ~Adafruit_GrayOLED(void);

  virtual void display(void) = 0;
  void clearDisplay(void);
  void invertDisplay(bool i);
  void setContrast(uint8_t contrastlevel);
  void drawPixel(int16_t x, int16_t y, uint16_t color);
  bool getPixel(int16_t x, int16_t y);
  uint8_t *getBuffer(void);

  void oled_command(uint8_t c);
  bool oled_commandList(const uint8_t *c, uint8_t n);

protected:
  bool _init(uint8_t i2caddr = 0x3C, bool reset = true);

  Adafruit_SPIDevice *spi_dev = NULL; 
  Adafruit_I2CDevice *i2c_dev = NULL; 
  int32_t i2c_preclk = 400000,        
      i2c_postclk = 100000;           
  uint8_t *buffer = NULL; 

  int16_t window_x1, 
      window_y1,     
      window_x2,     
      window_y2;     

  int dcPin,  
      csPin,  
      rstPin; 

  uint8_t _bpp = 1; 
private:
  TwoWire *_theWire = NULL; 
};

#endif // end __AVR_ATtiny85__
#endif // _Adafruit_GrayOLED_H_