#ifndef   ssd1306_H
#define   ssd1306_H

typedef unsigned long Pos_t;
typedef unsigned long Size_t;
typedef unsigned long Color_t;

typedef   unsigned long  (*pfnDrawBlock_t)(
  Pos_t x,
  Pos_t y,
  Pos_t cx,
  Pos_t cy,
  const unsigned char* data);
typedef   unsigned long  (*pfnDrawPoint_t)(Pos_t x, Pos_t y, Color_t color);


typedef unsigned long(*pfnFontDrawChar)(pfnDrawBlock_t DrawBlock,Pos_t x, Pos_t y, unsigned int ch);




typedef  struct _DeviceProp
{
  pfnDrawBlock_t    pfnDrawBlok;
  pfnDrawPoint_t    pfnDrawPoint;
  Size_t            xPixel;
  Size_t            yPixel;
}DeviceProp;

typedef  struct  _Device
{
  const DeviceProp*   pDevProp;
  pfnFontDrawChar     pfnFont;
  Pos_t               curX;
  Pos_t               curY;
}Device;


void  ssd1306_Init(void);
void  StartPageTransfer(void);
extern  const DeviceProp  ssd1306_Prop;
unsigned long ssd1306_DrawBlock(Pos_t x, Pos_t y, Pos_t cx, Pos_t cy, const unsigned char* data);
unsigned long ssd1306_IsOn(void);
unsigned long ssd1306_TurnOff(void);
unsigned long ssd1306_TurnOn(void);
unsigned char ssd1306_SetContrast(unsigned char contrast);
unsigned char ssd1306_GetContrast();
unsigned char* ssd1306_GetBuffer();
unsigned long ssd1306_DrawPoint(Pos_t x, Pos_t y, Color_t color);
void ssd1306_block_write(void);
void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos);
void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos);
void ssd1306_drawlogo();

#endif