This is a mbed library for a 1.8 inch 128x160 pixel SPI TFT display
Dependents: ST7735_Pong ST7735_TFT SPI18TFT_FRDM-KL25Z SPI18TFT ... more
Diff: ST7735_TFT.h
- Revision:
- 0:246f2fb5be59
diff -r 000000000000 -r 246f2fb5be59 ST7735_TFT.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ST7735_TFT.h Sun Dec 11 21:05:52 2011 +0000 @@ -0,0 +1,411 @@ +/* mbed library for 128*160 pixel display TFT based on ST7735 LCD Controller + * ST7735 specific routines (initialization, window addressing, pixel output) + * Copyright (c) 2011 Jonne Valola + * + * WARNING !! WORK IN PROGRESS !!! + * + * Graphics routines and SPI routines derived work used with permission from: + * mbed library for 240*320 pixel display TFT based on HX8347D LCD Controller + * Copyright (c) 2011 Peter Drescher - DC2PD + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MBED_ST7735_TFT_H +#define MBED_ST7735_TFT_H + +#include "mbed.h" +#include "GraphicsDisplay.h" + +#define RGB(r,g,b) (((r&0xF8)<<8)|((g&0xFC)<<3)|((b&0xF8)>>3)) //5 red | 6 green | 5 blue + +/*define ST7735 Commands */ + +#define ST7735_NOP 0x0 +#define ST7735_SWRESET 0x01 +#define ST7735_RDDID 0x04 +#define ST7735_RDDST 0x09 + +#define ST7735_SLPIN 0x10 +#define ST7735_SLPOUT 0x11 +#define ST7735_PTLON 0x12 +#define ST7735_NORON 0x13 + +#define ST7735_INVOFF 0x20 +#define ST7735_INVON 0x21 +#define ST7735_DISPOFF 0x28 +#define ST7735_DISPON 0x29 +#define ST7735_CASET 0x2A +#define ST7735_RASET 0x2B +#define ST7735_RAMWR 0x2C +#define ST7735_RAMRD 0x2E + +#define ST7735_COLMOD 0x3A +#define ST7735_MADCTL 0x36 + + +#define ST7735_FRMCTR1 0xB1 +#define ST7735_FRMCTR2 0xB2 +#define ST7735_FRMCTR3 0xB3 +#define ST7735_INVCTR 0xB4 +#define ST7735_DISSET5 0xB6 + +#define ST7735_PWCTR1 0xC0 +#define ST7735_PWCTR2 0xC1 +#define ST7735_PWCTR3 0xC2 +#define ST7735_PWCTR4 0xC3 +#define ST7735_PWCTR5 0xC4 +#define ST7735_VMCTR1 0xC5 + +#define ST7735_RDID1 0xDA +#define ST7735_RDID2 0xDB +#define ST7735_RDID3 0xDC +#define ST7735_RDID4 0xDD + +#define ST7735_PWCTR6 0xFC + +#define ST7735_GMCTRP1 0xE0 +#define ST7735_GMCTRN1 0xE1 + +/* some RGB color definitions */ +#define Black 0x0000 /* 0, 0, 0 */ +#define Navy 0x000F /* 0, 0, 128 */ +#define DarkGreen 0x03E0 /* 0, 128, 0 */ +#define DarkCyan 0x03EF /* 0, 128, 128 */ +#define Maroon 0x7800 /* 128, 0, 0 */ +#define Purple 0x780F /* 128, 0, 128 */ +#define Olive 0x7BE0 /* 128, 128, 0 */ +#define LightGrey 0xC618 /* 192, 192, 192 */ +#define DarkGrey 0x7BEF /* 128, 128, 128 */ +#define Blue 0x001F /* 0, 0, 255 */ +#define Green 0x07E0 /* 0, 255, 0 */ +#define Cyan 0x07FF /* 0, 255, 255 */ +#define Red 0xF800 /* 255, 0, 0 */ +#define Magenta 0xF81F /* 255, 0, 255 */ +#define Yellow 0xFFE0 /* 255, 255, 0 */ +#define White 0xFFFF /* 255, 255, 255 */ +#define Orange 0xFD20 /* 255, 165, 0 */ +#define GreenYellow 0xAFE5 /* 173, 255, 47 */ + +class ST7735_TFT : public GraphicsDisplay { + public: + + /** Create a ST7735_TFT object connected to SPI and three pins. ST7735 requires rs pin to toggle between data/command + * + * @param mosi,miso,sclk SPI + * @param cs pin connected to CS of display (called SS for 'Slave Select' in ST7735 datasheet) + * @param rs pin connected to RS of display (called D/CX in ST7735 datasheet) + * @param reset pin connected to RESET of display + * + */ + ST7735_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rs, PinName reset,const char* name ="TFT"); + + /** Get the width of the screen in pixel + * + * @param + * @returns width of screen in pixel + * + */ + virtual int width(); + + /** Get the height of the screen in pixel + * + * @returns height of screen in pixel + * + */ + virtual int height(); + + /** Draw a pixel at x,y with color + * + * @param x horizontal position + * @param y vertical position + * @param color 16 bit pixel color + */ + virtual void pixel(int x, int y, int colour); + + /** Get colour of pixel at x,y + * + * @param x horizontal position + * @param y vertical position + */ + + int getpixel(unsigned int x, unsigned int y); + + /** draw a circle + * + * @param x0,y0 center + * @param r radius + * @param color 16 bit color * + * + */ + + void circle(int x, int y, int r, int colour); + + /** draw a filled circle + * + * @param x0,y0 center + * @param r radius + * @param color 16 bit color * + * + * use circle with different radius, + * can miss some pixel + */ + void fillcircle(int x, int y, int r, int colour); + + /** draw a 1 pixel line + * + * @param x0,y0 start point + * @param x1,y1 stop point + * @param color 16 bit color + * + */ + void line(int x0, int y0, int x1, int y1, int colour); + + /** draw a rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 16 bit color + * * + */ + void rect(int x0, int y0, int x1, int y1, int colour); + + /** draw a filled rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 16 bit color + * + */ + void fillrect(int x0, int y0, int x1, int y1, int colour); + + /** setup cursor position + * + * @param x x-position (top left) + * @param y y-position + */ + void locate(int x, int y); + + /** Fill the screen with _backgroun color + * + */ + virtual void cls (void); + + /** calculate the max number of char in a line + * + * @returns max columns + * depends on actual font size + * + */ + int columns(void); + + /** calculate the max number of columns + * + * @returns max column + * depends on actual font size + * + */ + int rows(void); + + /** put a char on the screen + * + * @param value char to print + * @returns printed char + * + */ + int _putc(int value); + + /** draw a character on given position out of the active font to the TFT + * + * @param x x-position of char (top left) + * @param y y-position + * @param c char to print + * + */ + virtual void character(int x, int y, int c); + + /** paint a bitmap on the TFT + * + * @param x,y : upper left corner + * @param w width of bitmap + * @param h high of bitmap + * @param *bitmap pointer to the bitmap data + * + * bitmap format: 16 bit R5 G6 B5 + * + * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 + * use winhex to load this file and mark data stating at offset 0x46 to end + * use edit -> copy block -> C Source to export C array + * paste this array into your program + * + * define the array as static const unsigned char to put it into flash memory + * cast the pointer to (unsigned char *) : + * tft.Bitmap(10,40,309,50,(unsigned char *)scala); + */ + void Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap); + + + /** paint a 16 bit BMP from local filesytem on the TFT (slow) + * + * @param x,y : upper left corner + * @param *Name_BMP name of the BMP file + * @returns 1 if bmp file was found and painted + * @returns -1 if bmp file was found not found + * @returns -2 if bmp file is not 16bit + * @returns -3 if bmp file is to big for screen + * @returns -4 if buffer malloc go wrong + * + * bitmap format: 16 bit R5 G6 B5 + * + * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 + * copy to internal file system + * + */ + + int BMP_16(unsigned int x, unsigned int y, const char *Name_BMP); + + /** Read an area from the LCD RAM to MCU RAM + * + * @param x,y : upper left corner + * @param w width of bitmap + * @param h high of bitmap + * @param *buffer pointer to the buffer + */ + + void read_area(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *buffer); + + /** select the font to use + * + * @param f pointer to font array + * + * font array can created with GLCD Font Creator from http://www.mikroe.com + * you have to add 4 parameter at the beginning of the font array to use: + * - the number of byte / char + * - the vertial size in pixel + * - the horizontal size in pixel + * - the number of byte per vertical line + * you also have to change the array to char[] + * + */ + void set_font(unsigned char* f); + + /** Set the orientation of the screen + * x,y: 0,0 is always top left + * + * @param o direction to use the screen (0-3) 90� Steps + * + */ + void set_orientation(unsigned int o); + + SPI _spi; + DigitalOut _cs; + DigitalOut _rs; + DigitalOut _reset; + unsigned char* font; + +protected: + + /** draw a horizontal line + * + * @param x0 horizontal start + * @param x1 horizontal stop + * @param y vertical position + * @param color 16 bit color + * + */ + void hline(int x0, int x1, int y, int colour); + + /** draw a vertical line + * + * @param x horizontal position + * @param y0 vertical start + * @param y1 vertical stop + * @param color 16 bit color + */ + void vline(int y0, int y1, int x, int colour); + + /** Set draw window region + * + * @param x horizontal position + * @param y vertical position + * @param w window width in pixel + * @param h window height in pixels + */ + void window (unsigned int x, unsigned int y, unsigned int w, unsigned int h); + + /** Set draw window region to whole screen + * + */ + void WindowMax (void); + + /** Init the ST7735 controller + * + */ + void tft_reset(); + + /** Write data to the LCD controller + * + * @param dat data written to LCD controller + * + */ + void wr_dat(int value); + + /** Write a command the LCD controller + * + * @param cmd: command to be written + * + */ + void wr_cmd(int value); + + /** Start data sequence to the LCD controller + * + */ + void wr_dat_start(); + + /** Stop of data writing to the LCD controller + * + */ + void wr_dat_stop(); + + /** write data to the LCD controller + * + * @param data to be written + * * + */ + void wr_dat_only(unsigned short dat); + + /** Read data from the LCD controller + * + * @returns data from LCD controller + * + */ + unsigned short rd_dat(void); + + /** Write a value to the to a LCD register + * + * @param reg register to be written + * @param val data to be written + */ + void wr_reg (unsigned char reg, unsigned short val); + + /** Read a LCD register + * + * @param reg register to be read + * @returns value of the register + */ + unsigned short rd_reg (unsigned char reg); + + unsigned int orientation; + unsigned int char_x; + unsigned int char_y; + + +}; + +#endif