Diff: SPI_TFT/SPI_TFT.h

Revision:

0:fc70640071d2

diff -r 000000000000 -r fc70640071d2 SPI_TFT/SPI_TFT.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SPI_TFT/SPI_TFT.h	Tue Jan 31 19:40:57 2012 +0000
@@ -0,0 +1,392 @@
+/* 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.
+ */
+ 
+ /* change the char position handling
+  * use pixel (x,y) instadt of colum row */
+ 
+
+#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 */
+#define Orange          0xFD20      /* 255, 165,   0 */
+#define GreenYellow     0xAFE5      /* 173, 255,  47 */
+
+
+/** 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(48,115);
+ *     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 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);  
+    
+    
+    
+  /** 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&#65533; Steps  
+   *
+   */  
+  void set_orientation(unsigned int o);
+    
+  SPI _spi;
+  DigitalOut _cs;
+  DigitalOut _reset;
+  unsigned char* font;
+  
+  
+  
+   
+protected:
+
+  /** Set draw window region to whole screen
+   *
+   */  
+  void WindowMax (void);
+
+
+  /** 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);
+    
+ 
+    
+  /** 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;
+  unsigned int char_y;
+ 
+    
+};
+
+#endif