File content as of revision 3:a4caac512e13:

#ifndef __ssd1331_H__
#define __ssd1331_H__

#include "mbed.h"

// Screen Settings
#define width   96-1        // Max X axial direction in screen
#define height  64-1        // Max Y axial direction in screen
#define Set_Column_Address  0x15
#define Set_Row_Address     0x75
#define contrastA           0x81
#define contrastB           0x82
#define contrastC           0x83
#define display_on          0xAF
#define display_off         0xAE

// Font size
#define NORMAL  0
#define WIDE    1
#define HIGH    2
#define WH      3
#define WHx36   4
#define X_width 6           // character's width
#define Y_height 8           // character's height


// GAC hardware acceleration commands
#define GAC_DRAW_LINE           0x21    // Draw Line
#define GAC_DRAW_RECTANGLE      0x22    // Rectangle
#define GAC_COPY_AREA           0x23    // Copy Area
#define GAC_DIM_WINDOW          0x24    // Dim Window
#define GAC_CLEAR_WINDOW        0x25    // Clear Window
#define GAC_FILL_ENABLE_DISABLE 0x26    // Enable Fill
#define SCROLL_SETUP            0x27    // Setup scroll
#define SCROLL_STOP             0x2E    // Scroll Stop
#define SCROLL_START            0x2F    // Scroll Start

// some RGB color definitions         RED GREEN BLUE                          

#define Black           0x0000      //   0,   0,   0 
#define Navy            0x8000      //   0,   0, 128 
#define DarkGreen       0x0400      //   0, 128,   0 
#define DarkCyan        0x8400      //   0, 128, 128 
#define Maroon          0x0010      // 128,   0,   0 
#define Purple          0x8010      // 128,   0, 128 
#define Olive           0x0410      // 128, 128,   0 
#define LightGrey       0xC618      // 192, 192, 192 
#define DarkGrey        0x7BEF      // 128, 128, 128 
#define Red             0xF800      // 255,   0,   0 
#define Green           0x07E0      //   0, 255,   0 
#define Yellow          0x07FF      // 255, 255,   0 
#define Blue            0x001F      //   0,   0, 255 
#define Magenta         0xF81F      // 255,   0, 255 
#define Cyan            0xFFE0      //   0, 255, 255 
#define White           0xFFFF      // 255, 255, 255 
#define Orange          0x053F      // 255, 165,   0 
#define GreenYellow     0x2FF5      // 173, 255,  47 

// example code
/*
#include "mbed.h"
#include "ssd1331.h"

ssd1331 oled(D8, D9, D10, D11, NC, D13); // cs, res, dc, miso(nc), sck (KL25z)

char Time[50],Date[50];
void gettime();

int main() { 

    while(1){
        
        oled.Fill_Screen(oled.toRGB(255,0,0)); //red
        wait_ms(500);
        oled.Fill_Screen(oled.toRGB(0,255,0)); //green
        wait_ms(500);
        oled.Fill_Screen(oled.toRGB(0,0,255)); //blue
        wait_ms(500);
        oled.Fill_Screen(oled.toRGB(255,255,255)); //white
        wait_ms(500);
        
        oled.cls(); // clear screen to black
 
        oled.circle (20, 40, 30 ,oled.toRGB(0,0,255) , 1);      //fill circle
        oled.circle (20, 40, 30 ,oled.toRGB(255,255,255) , 0);  //circle 
        oled.circle (20, 60, 40 ,oled.toRGB(255,0,0) , 0);      //circle
        oled.line( 0, 0, width, height, oled.toRGB(0,255,255)); //line
        oled.line( width, 0, 0, height, oled.toRGB(255,0,255)); //line
        oled.rect(10,10,90,60,oled.toRGB(255,255,0));      //rectangle
        oled.fillrect(20,20,40,40,oled.toRGB(255,255,255),oled.toRGB(0,255,0)); //fillrectangle
        
        for(int y = 9; y >= 0; y--) {
             oled.contrast(y);  // set contrast level
             oled.foreground(oled.toRGB(255,255,255)); // set text colour
             oled.locate(1, 10); // set text start location
             oled.printf("%d",y); // std printf
             wait_ms(300);
        }  
        
        wait_ms(1000);
        oled.contrast(9); // set contrast to maximum
        wait_ms(2000);
        oled.cls();

        oled.SetFontSize(HIGH); // set tall font
        oled.foreground(oled.toRGB(0,255,0)); // set text colour
        oled.locate(0, 10);
        oled.printf( "HIGH 12345");  
        
        oled.SetFontSize(WIDE); // set text to wide
        oled.foreground(oled.toRGB(0,0,255));
        oled.locate(0, 28);
        oled.printf( "WIDE 123");  
        
        oled.SetFontSize(WH); // set text to wide and tall
        oled.foreground(oled.toRGB(255,0,0));
        oled.locate(0, 40);
        oled.printf( "WH 123");
        
        oled.SetFontSize(NORMAL); // set text to normal
        oled.foreground(oled.toRGB(255,255,255));      
                
        oled.ScrollSet(0,8,18,1,0); // set scroll function
        oled.Scrollstart(); // start scroll
       
        gettime();wait(1);gettime();wait(1);gettime();wait(1);      
        oled.ScrollSet(0,8,18,-2,0);
        oled.Scrollstart();       
        gettime();wait(1);gettime();wait(1);gettime();wait(1);
        
        oled.ScrollSet(0,8,18,3,0);
        oled.Scrollstart();
        
        gettime();wait(1);gettime();wait(1);gettime();wait(1);
        
        oled.ScrollSet(0,8,18,-4,0);
        oled.Scrollstart();
       
        gettime();wait(1);gettime();wait(1);gettime();wait(1);
        
        oled.Scrollstop(); // stop scroll
        wait(1);
     }               
}
void gettime()
{    
    time_t seconds = time(NULL);
    strftime(Time,40,"%H:%M:%S %a", localtime(&seconds));
    strftime(Date,40,"%d-%b-%Y", localtime(&seconds));
    oled.locate(0, 0);
    oled.printf(Time); 
}
*/

class ssd1331 : public Stream {
public:
    // constructor
    ssd1331(PinName cs_pin, PinName rst_pin, PinName a0_pin, PinName mosi_pin, PinName miso_pin, PinName sclk_pin);

    void pixel(int16_t x,int16_t y,unsigned int color);
    void rect(int16_t x1,int16_t y1,int16_t x2,int16_t y2,unsigned int colorline);
    void fillrect(int x1,int y1,int x2,int y2,unsigned int colorline,unsigned int colorfill);
    void line( int x1,int y1,int x2,int y2,unsigned int color);
    void circle (int radius, int x, int y,unsigned int color,int fill);
    void Fill_Screen(unsigned int color); // fill screen with any colour
    void foreground(unsigned int color); // text color
    void background(unsigned int color); // background color
    void SetFontSize(int);
    void on();  // display on
    void off(); // display off
    void cls(); // clear screen to black
    void dim();  // flip dim/normal
    void contrast(char value); //0~9 low~high
    void locate(int16_t column, int16_t row); // text start position
    int toRGB(int16_t R,int16_t G,int16_t B);   // get color from RGB values 00~FF(0~255)
    int row();
    int column();        
    void ScrollSet(int horizontal, int startline, int linecount, int vertical , int frame_interval);
    void Scrollstart();
    void Scrollstop();
    void Copy(int src_x1,int src_y1,int src_x2,int src_y2, int dst_x,int dst_y);
    void character(int x, int y, int c); // Print single character, x & y pixel co-ords.
    void set_font(unsigned char* f); // set external font. Use oled.set_font(NULL) to restore default font
    void Bitmap(const uint8_t *bitmap, int16_t x, int16_t y, int16_t w, int16_t h, unsigned char color); // load mono bitmap from flash
    void Bitmap16(int16_t x, int16_t y, int16_t w, int16_t h,unsigned char *bitmap); // load bitmap from flash
    int Bitmap16SD( int16_t x, int16_t y, unsigned char *Name_BMP); // uses up to 12.288k RAM, Fast
    int Bitmap16SD2(int16_t x, int16_t y, unsigned char *Name_BMP); // uses 96b RAM, slower
   
protected:
    // Stream implementation functions
    virtual int _putc(int c);
    virtual int _getc();
private:
    void Init(void);
    void RegWrite(unsigned char Command);
    void RegWriteM(unsigned char *Command, int count);
    void DataWrite(unsigned char c);
    void DataWrite_to(unsigned int Dat);
    void FontSizeConvert(int *lpx, int *lpy);
    void PutChar(int x,int y,unsigned int a);
    void PutCharInt(int x,int y,unsigned int a);
    void putp(int colour);
    unsigned char* font;
    unsigned int Char_Color;    // text color
    unsigned int BGround_Color; // background color
    void window(int16_t x, int16_t y, int16_t w, int16_t h);
    void Maxwindow(); // reset display window to full size
    // pixel location
    short _x;
    short _y;
    
    // window location
    short _x1;
    short _x2;
    short _y1;
    short _y2;
    int char_x;
    int char_y;
    int chr_size;
    int cwidth;           // character's width
    int cvert;           // character's height
    int externalfont;
    DigitalOut  CS,  RES,  DC;
    SPI spi; // mosi, miso, sclk
    
};

#endif