ST7735.h

00001 #ifndef ST7735_H
00002 #define ST7735_H
00003 
00004 #include "mbed.h"
00005 
00006 // Comment out the #defines below with // to stop that font being loaded
00007 // If all fonts are loaded the total space required is ablout 17890 bytes
00008 
00009 #define LOAD_FONT2 // Small font, needs ~3092 bytes in FLASH
00010 #define LOAD_FONT4 // Medium font, needs ~8126 bytes in FLASH
00011 #define LOAD_FONT6 // Large font, needs ~4404 bytes in FLASH
00012 #define LOAD_FONT7 // 7 segment font, needs ~3652 bytes in FLASH
00013 #define LOAD_FONT8 // Large font needs ~10kbytes, only 1234567890:.
00014 
00015 #define pgm_read_byte(addr) (*(const unsigned char *)(addr))
00016 #define pgm_read_word(addr) (*(const unsigned short *)(addr))
00017 
00018 #define swap(a, b) { int16_t t = a; a = b; b = t; }
00019 
00020 #define INITR_GREENTAB  0x0
00021 #define INITR_REDTAB    0x1
00022 #define INITR_BLACKTAB  0x2
00023 
00024 #define ST7735_TFTWIDTH  128
00025 #define ST7735_TFTHEIGHT 160
00026 
00027 #define ST7735_NOP     0x00
00028 #define ST7735_SWRESET 0x01
00029 #define ST7735_RDDID   0x04
00030 #define ST7735_RDDST   0x09
00031 
00032 #define ST7735_SLPIN   0x10
00033 #define ST7735_SLPOUT  0x11
00034 #define ST7735_PTLON   0x12
00035 #define ST7735_NORON   0x13
00036 
00037 #define ST7735_INVOFF  0x20
00038 #define ST7735_INVON   0x21
00039 #define ST7735_DISPOFF 0x28
00040 #define ST7735_DISPON  0x29
00041 #define ST7735_CASET   0x2A
00042 #define ST7735_RASET   0x2B
00043 #define ST7735_RAMWR   0x2C
00044 #define ST7735_RAMRD   0x2E
00045 
00046 #define ST7735_PTLAR   0x30
00047 #define ST7735_COLMOD  0x3A
00048 #define ST7735_MADCTL  0x36
00049 
00050 #define ST7735_FRMCTR1 0xB1
00051 #define ST7735_FRMCTR2 0xB2
00052 #define ST7735_FRMCTR3 0xB3
00053 #define ST7735_INVCTR  0xB4
00054 #define ST7735_DISSET5 0xB6
00055 
00056 #define ST7735_PWCTR1  0xC0
00057 #define ST7735_PWCTR2  0xC1
00058 #define ST7735_PWCTR3  0xC2
00059 #define ST7735_PWCTR4  0xC3
00060 #define ST7735_PWCTR5  0xC4
00061 #define ST7735_VMCTR1  0xC5
00062 
00063 #define ST7735_RDID1   0xDA
00064 #define ST7735_RDID2   0xDB
00065 #define ST7735_RDID3   0xDC
00066 #define ST7735_RDID4   0xDD
00067 
00068 #define ST7735_PWCTR6  0xFC
00069 
00070 #define ST7735_GMCTRP1 0xE0
00071 #define ST7735_GMCTRN1 0xE1
00072 
00073 // Color definitions
00074 #define ST7735_BLACK      0x0000
00075 #define ST7735_BLUE       0x001F
00076 #define ST7735_RED        0xF800
00077 #define ST7735_GREEN      0x07E0
00078 #define ST7735_CYAN       0x07FF
00079 #define ST7735_MAGENTA    0xF81F
00080 #define ST7735_YELLOW     0xFFE0
00081 #define ST7735_WHITE      0xFFFF
00082 #define ST7735_GREY       0x39C4
00083 #define ST7735_NAVY       0x000F
00084 #define ST7735_DARKGREEN  0x03E0
00085 #define ST7735_MAROON     0x7800
00086 #define ST7735_PURPLE     0x780F
00087 #define ST7735_OLIVE      0x7BE0
00088 #define ST7735_LIGHTGREY  0xC618
00089 #define ST7735_DARKGREY   0x7BEF
00090 #define ST7735_BROWN      0xFD20
00091 #define ST7735_PINK       0xF81F
00092 
00093 #define MADCTL_MY  0x80
00094 #define MADCTL_MX  0x40
00095 #define MADCTL_MV  0x20
00096 #define MADCTL_ML  0x10
00097 #define MADCTL_RGB 0x00
00098 #define MADCTL_BGR 0x08
00099 #define MADCTL_MH  0x04
00100 
00101 class ST7735
00102 {
00103 
00104 public:
00105     /** Create a ST7735 object connected to the specified pins
00106     *
00107     * @param ce   Pin connected to chip enable
00108     * @param dc   Pin connected to data/command select
00109     * @param mosi Pin connected to data input 
00110     * @param sclk Pin connected to serial clock
00111     *
00112     * Reset pin from LCD module is connected to reset pin microcontroller
00113     */
00114     
00115     ST7735(PinName cePin, PinName dcPin, PinName mosiPin, PinName sclkPin);
00116 
00117 private:
00118     void writecommand(char c);
00119     void writedata(char c); 
00120     void initSPI();
00121     void commonInit(const uint8_t *cmdList);
00122     void commandList(const uint8_t *addr);
00123     void pushColor(uint16_t color);  
00124       
00125 public:
00126     uint8_t tabcolor;      
00127     uint8_t colstart, rowstart; // some displays need this changed
00128     void initB();
00129     void initR(uint8_t options);
00130     void setRotation(uint8_t m);
00131     void fillScreen(uint16_t color);
00132     void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00133     void setAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1);
00134     void invertDisplay(bool i);
00135     void drawPixel(int16_t x, int16_t y, uint16_t color);
00136     void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
00137     void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
00138     uint16_t Color565(uint8_t r, uint8_t g, uint8_t b);
00139     void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color);
00140     void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00141     void drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00142     void drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color);
00143     void fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00144     void fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color);
00145     void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
00146     void fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
00147     void drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color);
00148     void fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color);
00149     void setCursor(int16_t x, int16_t y);
00150     void setTextSize(uint8_t s);
00151     void setTextColor(uint16_t c);
00152     void setTextColor(uint16_t c, uint16_t b);
00153     void setTextWrap(bool w);
00154     uint8_t getRotation(void);
00155     void drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color);
00156     int drawUnicode(unsigned int uniCode, int x, int y, int font);
00157     int drawNumber(long long_num,int poX, int poY, int font);
00158     int drawChar(char c, int x, int y, int font);
00159     int drawString(char *string, int poX, int poY, int font);    
00160     int drawCentreString(char *string, int dX, int poY, int font);
00161     int drawRightString(char *string, int dX, int poY, int font);
00162     int drawFloat(float floatNumber, int decimal, int poX, int poY, int font);
00163 
00164     
00165     
00166 private: 
00167     SPI*    spi;
00168     DigitalOut* ce;
00169     DigitalOut* rst;
00170     DigitalOut* dc;
00171 
00172 protected:
00173     static const int16_t WIDTH = ST7735_TFTWIDTH;   // This is the 'raw' display w/h - never changes
00174     static const int16_t HEIGHT = ST7735_TFTHEIGHT;  
00175     int16_t _width, _height; // Display w/h as modified by current rotation
00176     uint16_t textcolor, textbgcolor;
00177     uint8_t textsize;
00178     uint8_t rotation;
00179     bool wrap; // If set, 'wrap' text at right edge of display 
00180     int16_t cursor_x;
00181     int16_t cursor_y;
00182 };
00183 
00184 #endif