Adafruit_SSD1331.h

00001 /*************************************************** 
00002   This is a library for the 0.96" 16-bit Color OLED with SSD1331 driver chip
00003   Pick one up today in the adafruit shop!
00004   ------> http://www.adafruit.com/products/684
00005   These displays use SPI to communicate, 4 or 5 pins are required to  
00006   interface
00007   Adafruit invests time and resources providing this open source code, 
00008   please support Adafruit and open-source hardware by purchasing 
00009   products from Adafruit!
00010   Written by Limor Fried/Ladyada for Adafruit Industries.  
00011   BSD license, all text above must be included in any redistribution
00012  ****************************************************/
00013  
00014 #include <stddef.h>
00015 #include "mbed.h"
00016 #include "Adafruit_GFX.h"
00017 
00018 #define gfx_swap(a, b) { uint16_t t = a; a = b; b = t; }
00019 
00020 #ifdef __SAM3X8E__
00021 typedef volatile RwReg PortReg;
00022 typedef uint32_t PortMask;
00023 #define _BV(b) (1<<(b))
00024 #else
00025 typedef volatile uint8_t PortReg;
00026 typedef uint8_t PortMask;
00027 #endif
00028 
00029 // Select one of these defines to set the pixel color order
00030 #define SSD1331_COLORORDER_RGB
00031 // #define SSD1331_COLORORDER_BGR
00032 
00033 #if defined SSD1331_COLORORDER_RGB && defined SSD1331_COLORORDER_BGR
00034   #error "RGB and BGR can not both be defined for SSD1331_COLORODER."
00035 #endif
00036 
00037 // Timing Delays
00038 #define SSD1331_DELAYS_HWFILL       (1)
00039 #define SSD1331_DELAYS_HWLINE       (0)
00040 #define SSD1331_DELAYS_HWCLEAR      (1)
00041 
00042 // SSD1331 Commands
00043 #define SSD1331_CMD_DRAWLINE        0x21
00044 #define SSD1331_CMD_DRAWRECT        0x22
00045 #define SSD1331_CMD_FILL            0x26
00046 #define SSD1331_CMD_SETCOLUMN       0x15
00047 #define SSD1331_CMD_SETROW          0x75
00048 #define SSD1331_CMD_CONTRASTA       0x81
00049 #define SSD1331_CMD_CONTRASTB       0x82
00050 #define SSD1331_CMD_CONTRASTC       0x83
00051 #define SSD1331_CMD_MASTERCURRENT   0x87
00052 #define SSD1331_CMD_SETREMAP        0xA0
00053 #define SSD1331_CMD_STARTLINE       0xA1
00054 #define SSD1331_CMD_DISPLAYOFFSET   0xA2
00055 #define SSD1331_CMD_NORMALDISPLAY   0xA4
00056 #define SSD1331_CMD_DISPLAYALLON    0xA5
00057 #define SSD1331_CMD_DISPLAYALLOFF   0xA6
00058 #define SSD1331_CMD_INVERTDISPLAY   0xA7
00059 #define SSD1331_CMD_SETMULTIPLEX    0xA8
00060 #define SSD1331_CMD_SETMASTER       0xAD
00061 #define SSD1331_CMD_DISPLAYOFF      0xAE
00062 #define SSD1331_CMD_DISPLAYON       0xAF
00063 #define SSD1331_CMD_POWERMODE       0xB0
00064 #define SSD1331_CMD_PRECHARGE       0xB1
00065 #define SSD1331_CMD_CLOCKDIV        0xB3
00066 #define SSD1331_CMD_PRECHARGEA      0x8A
00067 #define SSD1331_CMD_PRECHARGEB      0x8B
00068 #define SSD1331_CMD_PRECHARGEC      0x8C
00069 #define SSD1331_CMD_PRECHARGELEVEL  0xBB
00070 #define SSD1331_CMD_VCOMH           0xBE
00071 #define WIDTH                       96
00072 #define HEIGHT                      64
00073 
00074 #define SSD1331_CMD_CLEAR           0x25
00075 
00076 class Adafruit_SSD1331 : public Adafruit_GFX {
00077  public:
00078   Adafruit_SSD1331(PinName cs, PinName rs, PinName dc, PinName mosi, PinName miso, PinName sclk);
00079 
00080   uint16_t Color565(uint8_t r, uint8_t g, uint8_t b);
00081 
00082   // drawing primitives!
00083   void drawPixel(int16_t x, int16_t y, uint16_t color);
00084   void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color);
00085   void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00086   void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t fillcolor);
00087   void clearScreen();
00088   void clearArea(int16_t x0, int16_t y0, int16_t x1, int16_t y1);
00089   void pushColor(uint16_t c);
00090 
00091   // commands
00092   void begin(void);
00093   void goHome(void);
00094   void goTo(int x, int y);
00095 
00096   void reset(void);
00097 
00098   /* low level */
00099 
00100   void writeData(uint8_t d);
00101   void writeCommand(uint8_t c);
00102 
00103   static const int16_t TFTWIDTH = 96;
00104   static const int16_t TFTHEIGHT = 64;
00105   
00106   uint8_t cursorX, cursorY;
00107 
00108   void writeData_unsafe(uint16_t d);
00109 
00110   void setWriteDir(void);
00111   void write8(uint8_t d);
00112 
00113  private:
00114   void spiwrite(uint8_t);
00115 
00116   DigitalOut  CS,  RES,  DC;
00117   SPI spi; // mosi, miso, sclk
00118 };