code for i2c oled 0.96" display using SSD1306

I created a header file for the graphics functions, as the compiler was complaining
Usage with Arduino-Mk

Author: arteknix

UsingArduino/Arduino-Make/ssd1306_128x64_i2c/Makefile

@@ -0,0 +1,12 @@
+ARDUINO_DIR     = /usr/share/arduino
+ARDMK_DIR       = /usr/share/arduino
+#AVR_TOOLS_DIR  = /usr
+#ARDUINO_LIBS   = Ethernet SPI
+ARDUINO_LIBS   = Wire SPI Adafruit_BusIO Adafruit_GFX_Library Adafruit_SSD1306
+BOARD_TAG       = uno
+#BOARD_TAG       = yun
+MONITOR_PORT    = /dev/ttyACM1
+AVRDUDE         = /usr/share/arduino/hardware/tools/avrdude
+AVRDUDE_CONF    = /usr/share/arduino/hardware/tools/avrdude.conf
+
+include /usr/share/arduino/Arduino.mk

UsingArduino/Arduino-Make/ssd1306_128x64_i2c/ssd1306_128x64_fcts.h

@@ -0,0 +1,20 @@
+//ssd1306_128x64_fcts.h
+#ifndef SSD1306_FCTS_H
+#define SSD1306_FCTS_H 1
+
+void testdrawline() ;
+void testdrawrect(void) ;
+void testfillrect(void) ;
+void testdrawcircle(void) ;
+void testfillcircle(void) ;
+void testdrawroundrect(void) ;
+void testfillroundrect(void) ;
+void testdrawtriangle(void) ;
+void testfilltriangle(void) ;
+void testdrawchar(void) ;
+void testdrawstyles(void) ;
+void testscrolltext(void) ;
+void testdrawbitmap(void) ;
+void testanimate(const uint8_t *bitmap, uint8_t w, uint8_t h) ;
+
+#endif