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Written by Limor Fried/Ladyada  for Adafruit Industries.  
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Written by Limor Fried/Ladyada  for Adafruit Industries.  
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BSD license, check license.txt for more information
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BSD license, check license.txt for more information
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All text above, and the splash screen must be included in any redistribution
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All text above, and the splash screen must be included in any redistribution
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*********************************************************************/
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*********************************************************************/
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#include "ssd1306_config.h"
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typedef uint8_t boolean;
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typedef uint8_t boolean;
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static const boolean true = 1;
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static const boolean true = 1;
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static const boolean false = 0;
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static const boolean false = 0;
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#define WHITE  1
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#define WHITE  1
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#define INVERT 2
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#define INVERT 2
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// this driver can cope with more than one physical display of the same type.
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// this driver can cope with more than one physical display of the same type.
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#define MAX_PHYS_DISPLAYS 2
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#define MAX_PHYS_DISPLAYS 1
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extern void ssd1306spiInit(void);
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extern void ssd1306fastSPIwrite(uint8_t d);
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extern void ssd1306commandSPIwrite(uint8_t c);
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extern void ssd1306resetDisplay(void);
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extern void ssd1306SendDisplay(uint8_t * buff, uint8_t len);
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/*=========================================================================
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/*=========================================================================
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    SSD1306 Displays
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    SSD1306 Displays
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    -----------------------------------------------------------------------
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    -----------------------------------------------------------------------
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    The driver is used in multiple displays (128x64, 128x32, etc.).
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    The driver is used in multiple displays (128x64, 128x32, etc.).
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    SSD1306_128_64  128x64 pixel display
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    SSD1306_128_64  128x64 pixel display
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    SSD1306_128_32  128x32 pixel display
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    SSD1306_128_32  128x32 pixel display
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    -----------------------------------------------------------------------*/
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    -----------------------------------------------------------------------*/
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        #define SSD1306_128_64
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/*=========================================================================*/
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/*=========================================================================*/
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#if defined SSD1306_128_64 && defined SSD1306_128_32
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  #error "Only one SSD1306 display can be specified at once in SSD1306.h"
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#endif
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#if !defined SSD1306_128_64 && !defined SSD1306_128_32
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  #error "At least one SSD1306 display must be specified in SSD1306.h"
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#endif
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// the 1106 has a RAM width of 128
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#if defined SSD1306_128_64
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#if defined SSD1306_128_64
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  #define SSD1306_LCDWIDTH                  128
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  #define SSD1306_LCDWIDTH                  128
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  #define SSD1306_LCDHEIGHT                 64
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  #define SSD1306_LCDHEIGHT                 64
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#endif
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  #define SSD1306_RAMWIDTH                 128
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#if defined SSD1306_128_32
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#elif defined SSD1306_128_32
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  #define SSD1306_LCDWIDTH                  128
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  #define SSD1306_LCDWIDTH                  128
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  #define SSD1306_LCDHEIGHT                 32
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  #define SSD1306_LCDHEIGHT                 32
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  #define SSD1306_RAMWIDTH                 128
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#elif defined SSD1306_132_64
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  #define SSD1306_LCDWIDTH                  128
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  #define SSD1306_LCDHEIGHT                 64
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  #define SSD1306_RAMWIDTH                 132
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#else
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  #error "At least one SSD1306 display must be specified in SSD1306.h"
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#endif
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#endif
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#define SSD1306_SETCONTRAST 0x81
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#define SSD1306_SETCONTRAST 0x81
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#define SSD1306_DISPLAYALLON_RESUME 0xA4
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#define SSD1306_DISPLAYALLON_RESUME 0xA4
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#define SSD1306_DISPLAYALLON 0xA5
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#define SSD1306_DISPLAYALLON 0xA5
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#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A
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#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A
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extern const uint16_t WIDTH;
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extern const uint16_t WIDTH;
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extern const uint16_t HEIGHT;
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extern const uint16_t HEIGHT;
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extern uint8_t display_buffer[MAX_PHYS_DISPLAYS][SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8];
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extern uint8_t display_buffer[];
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extern uint8_t getRotation(void);
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extern uint8_t getRotation(void);
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extern int16_t width(void);
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extern int16_t width(void);
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extern int16_t height(void);
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extern int16_t height(void);
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extern void fastSPIwrite(uint8_t d);
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/* stolen from AdaFruit class and converted to C */
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/* stolen from AdaFruit class and converted to C */
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void ssd1306_begin(uint8_t vccstate, uint8_t i2caddr);
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void ssd1306_begin(uint8_t vccstate, uint8_t i2caddr);
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extern  void ssd1306_command(uint8_t c);
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extern  void ssd1306_data(uint8_t c);
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extern  void clearDisplay(void);
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extern  void clearDisplay(void);
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extern  void invertDisplay(uint8_t i);
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extern  void invertDisplay(uint8_t i);
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extern  void display();
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extern  void display();
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extern void dim(uint8_t contrast);
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extern void dim(uint8_t contrast);
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 extern void drawPixel(int16_t x, int16_t y, uint16_t color);
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 extern void drawPixel(int16_t x, int16_t y, uint16_t color);
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  void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
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  void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
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  inline void drawFastVLineInternal(int16_t x, int16_t y, int16_t h, uint16_t color) __attribute__((always_inline));
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  inline void drawFastHLineInternal(int16_t x, int16_t y, int16_t w, uint16_t color) __attribute__((always_inline));
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  extern void drawLine(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t color);
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  extern void drawLine(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t color);
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  extern  void select_display(int i) ; // select physical display [i]
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  extern  void select_display(int i) ; // select physical display [i]
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  extern  inline uint8_t * display_address(void) ;
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  extern  inline uint8_t * display_address(void) ;