File content as of revision 0:06f42dd3eab3:

#ifndef HG_OLED_DRIVER
#define HG_OLED_DRIVER

#include "mbed.h"
#include "OLED_types.h" 
#include "OLED_info.h"



class OLED{

public:


  OLED(PinName mosi,PinName sclk,PinName pwr, PinName cs,PinName rst, PinName dc);

  ~OLED(); 

  /**
   * Send the command to OLED
   * @param  self    OLED handle
   * @param  cmd     OLED command from the datasheet
   * @param  isFirst designate if this is the first byte in the command
   */
  void OLED_SendCmd(uint32_t cmd,
                     uint8_t isFirst);


  /**
   * Send data to OLED
   * @param  dataToSend data to send to OLED
   * @param  dataSize   data-size
   */
  void OLED_SendData ( const uint8_t* dataToSend, 
                             uint32_t dataSize);

  /**
   * draw box on OLED
   * @param  xCrd   x-coordinate for box's uper left corner
   * @param  yCrd   y-coordinate for box's uper left corner
   * @param  width  box's width
   * @param  height box's height
   * @param  color  color of the box
   * @return        status flag
   */
  oled_status_t OLED_DrawBox (
                              uint16_t xCrd,
                              uint16_t yCrd,
                              uint16_t width,
                              uint16_t height,
                              uint16_t color
                            );

  /**
   * Fill the entire screen with specified color
   * @param  color color to fill with
   */
  void OLED_FillScreen( uint16_t color );



  /**
   * Draw a single pixel
   * @param  xCrd  pixel's x coordinate
   * @param  yCrd  pixel's y coordinate
   * @param  color pixel's color
   * @return       status flag
   */
  oled_status_t OLED_DrawPixel (
                                 int16_t xCrd,
                                 int16_t yCrd,
                                uint16_t color
                              );


  /**
   * Draw the whole screen
   * @param  image      image to draw
   * @param  xCrd       image x-coordinate
   * @param  yCrd       image y-coordinate
   * @param  width      image width
   * @param  height     image height
   * @param  transition transition style for the new image arrival
   * @return            status flag
   */
  oled_status_t OLED_DrawScreen (
                                     const uint8_t* image,
                                            uint8_t xCrd,
                                            uint8_t yCrd,
                                            uint8_t width,
                                            uint8_t height,
                                  oled_transition_t transition
                                );


  /**
   * Set the font to use
   * @param newFont  desired font
   * @param newColor desired color
   * @return         status flag
   */
  oled_status_t OLED_SetFont(
                              const uint8_t* newFont,
                                    uint16_t newColor
                            );


  /**
   * Set OLED dynamic area
   * @param dynamic_area data-structure with desired values
   */
  void OLED_SetDynamicArea(oled_dynamic_area_t *dynamic_area);

  /**
   * Destroy current OLED dynamic area
   */
  void OLED_DestroyDynamicArea();


  /**
   * Set OLED text properties
   * @param textProperties data-structure with desired properties
   */
  void OLED_SetTextProperties(oled_text_properties_t *textProperties);


  /**
   * Return the width in [px] required for the given string to be displayed
   * @param  text desired string
   * @return      required text width in [px]
   */
  uint8_t OLED_GetTextWidth(const uint8_t* text);


  /**
   * Count the characters
   * @param  width  text width
   * @param  font   text font
   * @param  text   given text string
   * @param  length text length
   * @return        character count
   */
  uint8_t OLED_CharCount(uint8_t width, const uint8_t* font, const uint8_t* text, uint8_t length);

  /**
   * Add text to the main screen buffer
   * @param  text text to add
   * @return      status flag
   */
  oled_status_t OLED_AddText( const uint8_t* text );

  /**
   * Write text on OLED at position set in Dynamic Area Field
   * @param text desired text
   * @param x    x-coordinate for the given text, set through .dynamicArea variable 
   * @param y    y-coordinate for the given text, set through .dynamicArea variable 
   */
  oled_status_t OLED_DrawText ( const uint8_t* text );


  /**
   * Return the dimensions of image 
   * @param width  given image's width
   * @param height given image's height
   * @param image  desired image
   */
  void OLED_GetImageDimensions(uint8_t *width, uint8_t *height, const uint8_t* image);



  /**
   * Add image to the main screen buffer
   * @param  image      desired image
   * @return            status flag
   */
  oled_status_t OLED_AddImage ( const uint8_t* image );

  /**
   * Draw image, i.e. send image to OLED GRAM
   * @param  image      desired image
   * @param  transition desired transition style for the new image
   * @return            status flag
   */
  oled_status_t OLED_DrawImage ( const uint8_t* image );

  /**
   * Dim OLED screen on
   */
  void OLED_DimScreenON();

  /**
   * Return OLED back to full contrast
   */
  void OLED_DimScreenOFF();

  /**
   * Swap image's bytes per pixel to obtain the correct color format
   * @param imgDst  desired image
   * @param imgSrc  original image
   * @param imgSize image's size
   */
  void OLED_Swap(
                      oled_pixel_t imgDst,
                    const uint8_t* imgSrc,
                          uint16_t imgSize
                  );
    

  /**
   * Turn on Power for OLED Display
   */              
  void OLED_PowerON();

  /**
   * Turn off Power for OLED Display
   */ 
  void OLED_PowerOFF(); 

  /**
   * update the main screen buffer
   * with the given image

   * @param  xCrd       image x-coordinate
   * @param  yCrd       image y-coordinate
   * @param  width      image width
   * @param  height     image height
   * @param  image      image for buffer
   */
  void OLED_UpdateBuffer (
                                uint8_t xCrd,
                                uint8_t yCrd,
                                uint8_t width,
                                uint8_t height,
                                const uint8_t* image
                              );



private:

  SPI oled_SPI;
  DigitalOut oled_POWER;
  DigitalOut oled_CS;
  DigitalOut oled_RST; 
  DigitalOut oled_DC;

 
  const uint8_t* selectedFont;

  uint8_t
    isFontInitialized,
    currentChar_width,
    currentChar_height,
    screenBuf[OLED_GRAM_SIZE];

  uint16_t
    selectedFont_color,
    selectedFont_firstChar, // first character in the font table
    selectedFont_lastChar,  // last character in the font table
    selectedFont_height,
    colorMask;

  oled_dynamic_area_t oled_dynamic_area;
  oled_text_properties_t oled_text_properties;

  
  //Internal Functions
  void Transpose( oled_pixel_t transImage, const oled_pixel_t image, uint8_t width, uint8_t height );
  oled_status_t TopDown   ( const uint8_t* image, uint8_t xCrd, uint8_t yCrd, uint8_t width, uint8_t height );
  oled_status_t DownTop   ( const uint8_t* image, uint8_t xCrd, uint8_t yCrd, uint8_t width, uint8_t height );
  oled_status_t LeftRight ( const uint8_t* image, uint8_t xCrd, uint8_t yCrd, uint8_t width, uint8_t height );
  oled_status_t RightLeft ( const uint8_t* image, uint8_t xCrd, uint8_t yCrd, uint8_t width, uint8_t height );
  void SetBorders( uint8_t xCrd, uint8_t yCrd, uint8_t width, uint8_t height );
  oled_status_t CreateTextBackground();
  void WriteCharToBuf( uint16_t charToWrite, oled_pixel_t* chrBuf );
  oled_status_t AddCharToTextArea( oled_pixel_t chrPtr, uint8_t chrWidth, uint8_t chrHeight, oled_pixel_t copyAddr, uint8_t imgWidth );
  void* AllocateDynamicArea( uint32_t area );
  oled_status_t DestroyDynamicArea(void * ptr);

};

#endif