main.cpp

00001 /* Demo for mbed Library for FTDI FT800  Enbedded Video Engine "EVE"
00002  * based on Original Code Sample from FTDI
00003  * ported to mbed by Peter Drescher, DC2PD 2014
00004  * Released under the MIT License: http://mbed.org/license/mit */
00005 
00006 #include "mbed.h"
00007 #include "FT_Platform.h"
00008 FT800 TFT(p5,p6,p7,p10,p8,p9);   // mosi, miso, sck, ss, int, pd     // the FT800 is connected to SPI 11-13
00009 
00010 /***************************************************************************/
00011 /* Show a Screen with Text for 5 seconds                                   */
00012 /* A spinner shows the delay                                               */
00013 /***************************************************************************/
00014 
00015 ft_void_t Start_Screen(ft_char8_t *str)
00016 {
00017     TFT.DLstart();                                         // start a new display command list
00018     TFT.DL(CLEAR_COLOR_RGB(255,255,255));      // set the clear color to white
00019     TFT.DL(CLEAR(1,1,1));                      // clear buffers -> color buffer,stencil buffer, tag buffer
00020     TFT.DL(COLOR_RGB(0x80,0x80,0x00));         // set current color
00021     TFT.Text((TFT.DispWidth/2), TFT.DispHeight/2, 20, OPT_CENTERX, str); // draw Text with font 31
00022     TFT.DL(COLOR_RGB(0xFF,0x00,0x00));         // change current color
00023     TFT.Spinner((TFT.DispWidth/2),TFT.DispHeight/4, 0,0);  // draw a animated spinner
00024 
00025     TFT.DL(DISPLAY());                         // Display the image
00026     TFT.Swap();                                            // Swap the current display list
00027     TFT.Flush_Co_Buffer();                                 // Download the command list into fifo
00028 
00029     TFT.WaitCmdfifo_empty();                               // Wait till coprocessor completes the operation
00030     TFT.Sleep(5000);                                       // Wait 5 s to show
00031 }
00032 
00033 // construct the screen and downloasd it to the LCD
00034 void screen_1(unsigned int r,unsigned int g,unsigned int b)
00035 {
00036     TFT.DLstart();                         // start a new display command list
00037     TFT.DL(CLEAR(1,1,1));                  // clear buffers -> color buffer,stencil buffer, tag buffer
00038     TFT.DL(COLOR_RGB(0xff,0xff,0xff));     // set current color to white
00039     TFT.DL(TAG(1));                        // assign TAG value 1
00040     TFT.FgColor(COLOR_RGB(0xff,0,0));      // forground color red
00041     TFT.Slider(140,81,310,14,0,r,255);     // slider for red
00042     TFT.DL(TAG(2));                        // assign TAG value 2
00043     TFT.FgColor(COLOR_RGB(0,0xff,0));      // forground color green
00044     TFT.Slider(140,133,310,14,0,g,255);    // slider for green
00045     TFT.DL(TAG(3));                        // assign TAG value 3
00046     TFT.FgColor(COLOR_RGB(0,0,0xff));      // forground color blue
00047     TFT.Slider(139,185,310,14,0,b,255);    // slider for blue
00048     TFT.DL(COLOR_RGB(0xff,0x00,0x00));     // set current color to red
00049     TFT.Text(82,69,30,0,"R");              // text R
00050     TFT.DL(COLOR_RGB(0x00,0xff,0x00));     // set current color to green
00051     TFT.Text(82,120,30,0,"G");             // text G
00052     TFT.DL(COLOR_RGB(0x00,0x00,0xff));     // set current color to blue
00053     TFT.Text(82,174,30,0,"B");             // text B
00054     TFT.DL(SCISSOR_XY(10,10));             // define area starting at 10,10
00055     TFT.DL(SCISSOR_SIZE(50,50));           // size 50,50
00056     TFT.DL(CLEAR_COLOR_RGB(r,g,b));        // set clear color to r,g,b
00057     TFT.DL(CLEAR(1,1,1));                  // fill the area
00058     TFT.DL(DISPLAY());                     // Display the image
00059     TFT.Swap();                            // Swap the current display list
00060     TFT.Flush_Co_Buffer();                 // Download the command list into fifo
00061     TFT.WaitCmdfifo_empty();               // Wait till coprocessor completes the operation
00062 }
00063 
00064 int main()
00065 {
00066     unsigned int r = 0,g = 0,b = 0;
00067     ft_uint32_t TrackRegisterVal = 0;              // touch track
00068 
00069     Start_Screen("RGB DEMO For EVECONNECT");                // Show start screen
00070     TFT.Calibrate();                               // calibrate the touch screen
00071      TFT. luminosite( 128) ;    
00072  
00073     /* Set the tracker for the 3 sliders -  define the Area for touching */
00074     TFT.Track(131,63,330,48,1);                     // slider r
00075     TFT.Track(131,116,333,48,2);                    // slider g
00076     TFT.Track(131,168,330,48,3);                    // slider b
00077     TFT.Flush_Co_Buffer();                          // Download the commands into fifo
00078     TFT.WaitCmdfifo_empty();                        // Wait till coprocessor completes the operation
00079     screen_1(r,g,b);                                // paint screen
00080 
00081     /* the demo is updating the screen in a endless loop                                    */
00082     while(1) {
00083         ft_uint8_t tagval = 0;
00084         TrackRegisterVal = TFT.Rd32(REG_TRACKER);    // check if one of the tree Slider is touched
00085         tagval = TrackRegisterVal & 0xff;
00086         if(0 != tagval) {                            // touch -> get new rgb value
00087             if(1 == tagval) {                        // the red slider is touched
00088                 r = TrackRegisterVal>>16;            // get the new value
00089                 r = r *255/65536;                    // scale it down to 255
00090             } else if(2 == tagval) {                 // the green slider is touched
00091                 g = TrackRegisterVal>>16;            // get new slider value
00092                 g = g * 255/65536;                   // scale it down to 255
00093             } else if(3 == tagval) {                 // the blue slider is touched
00094                 b = TrackRegisterVal>>16;            // get new slider value
00095                 b = b * 255/65536;                   // scale it down to 255
00096             }
00097             screen_1(r,g,b);                         // paint new screen
00098             TFT.Sleep(10);                           // wait 10ms for next check
00099         }
00100 
00101     }  // end of display loop
00102 }
00103 
00104 
00105