![](/media/cache/profiles/1f50893f80d6830d62765ffad7721742.50x50_q85.jpg)
A general demonstration color etch-a-sketch program using the QVGA TFT with HX8347D controller, Orange Board. Saves touchscreen calibaration data saved in tft.ini. Creates /local/tft.ini if missing. Also included is an Ethernet NTP client to update the RTC. Assumes all other Orange Board devices attached: Text LCD, SDHC Flash, Ethernet.
Dependencies: EthernetNetIf TextLCD mbed
Diff: SPI_TFT/SPI_TFT.h
- Revision:
- 0:e065ca40f28a
diff -r 000000000000 -r e065ca40f28a SPI_TFT/SPI_TFT.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SPI_TFT/SPI_TFT.h Mon Aug 01 16:29:58 2011 +0000 @@ -0,0 +1,353 @@ +/* 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_SPI_TFT_H +#define MBED_SPI_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 SPI_START (0x70) /* Start byte for SPI transfer */ +#define SPI_RD (0x01) /* WR bit 1 within start */ +#define SPI_WR (0x00) /* WR bit 0 within start */ +#define SPI_DATA (0x02) /* RS bit 1 within start byte */ +#define SPI_INDEX (0x00) /* RS bit 0 within start byte */ + + +/* 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 */ + +/** Display control class, based on GraphicsDisplay and TextDisplay + * + * Example: + * @code + * #include "stdio.h" + * #include "mbed.h" + * #include "SPI_TFT.h" + * #include "string" + * #include "Arial12x12.h" + * #include "Arial24x23.h" + * + * + * + * // the TFT is connected to SPI pin 5-7 + * SPI_TFT TFT(p5, p6, p7, p8, p15,"TFT"); // mosi, miso, sclk, cs, reset + * + * int main() { + * TFT.claim(stdout); // send stdout to the TFT display + * //TFT.claim(stderr); // send stderr to the TFT display + * + * TFT.background(Black); // set background to black + * TFT.foreground(White); // set chars to white + * TFT.cls(); // clear the screen + * TFT.set_font((unsigned char*) Arial12x12); // select the font + * + * TFT.set_orientation(0); + * TFT.locate(0,0); + * printf(" Hello Mbed 0"); + * TFT.set_font((unsigned char*) Arial24x23); // select font 2 + * TFT.locate(2,5); + * TFT.printf("Bigger Font"); + * } + * @endcode + */ + class SPI_TFT : public GraphicsDisplay { + public: + + /** Create a SPI_TFT object connected to SPI and two pins + * + * @param mosi,miso,sclk SPI + * @param cs pin connected to CS of display + * @param reset pin connected to RESET of display + * + */ + SPI_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, 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); + + /** 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 column 0 to max + * @param row 0 to max + * max depend on font size + */ + void locate(int column, int row); + + /** 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 col column + * @param row row + * @param c char to print + * + */ + virtual void character(int col, int row, 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 + * + */ + void Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap); + + /** 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 _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 HX8347D 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; + +}; + +#endif