Peter Drescher / Mbed 2 deprecated FT800_RGB_demo2

Demo for FT800 lib. Use a dial wheel to select the color and a slider to change the brightness.

Dependencies:   FT800_2 mbed

/media/uploads/dreschpe/color2.jpg

Use a dial to select the color and a slider to change the brightness

main.cpp@0:528baa4e7913, 2014-09-21 (annotated)

Committer:
dreschpe
Date:
Sun Sep 21 21:25:09 2014 +0000
Revision:
0:528baa4e7913
Demo for FT800 Lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 0:528baa4e7913 1 /* Demo for mbed Library for FTDI FT800 Enbedded Video Engine "EVE"
dreschpe 0:528baa4e7913 2 * by Peter Drescher, DC2PD 2014
dreschpe 0:528baa4e7913 3 * Released under the MIT License: http://mbed.org/license/mit */
dreschpe 0:528baa4e7913 4
dreschpe 0:528baa4e7913 5 #include "mbed.h"
dreschpe 0:528baa4e7913 6 #include "FT_Platform.h"
dreschpe 0:528baa4e7913 7
dreschpe 0:528baa4e7913 8
dreschpe 0:528baa4e7913 9 FT800 TFT(PA_7,PA_6,PA_5,PC_7,PB_4,PA_9); // mosi, miso, sck, ss, int, pd // the FT800 is connected to SPI 11-13
dreschpe 0:528baa4e7913 10
dreschpe 0:528baa4e7913 11 // global Vars
dreschpe 0:528baa4e7913 12 unsigned int r,b,g;
dreschpe 0:528baa4e7913 13
dreschpe 0:528baa4e7913 14 // function to convert hue , saturation and value to RGB
dreschpe 0:528baa4e7913 15 // see http://en.wikipedia.org/wiki/HSL_and_HSV
dreschpe 0:528baa4e7913 16 void hsv2rgb(float H,float S, float V)
dreschpe 0:528baa4e7913 17 {
dreschpe 0:528baa4e7913 18 float f,h,p,q,t;
dreschpe 0:528baa4e7913 19 int i;
dreschpe 0:528baa4e7913 20 if( S == 0.0) {
dreschpe 0:528baa4e7913 21 r = V * 255;
dreschpe 0:528baa4e7913 22 g = V * 255;
dreschpe 0:528baa4e7913 23 b = V * 255;
dreschpe 0:528baa4e7913 24 return;
dreschpe 0:528baa4e7913 25 }
dreschpe 0:528baa4e7913 26 if(H > 360.0) H = 0.0; // check values
dreschpe 0:528baa4e7913 27 if(S > 1.0) S = 1.0;
dreschpe 0:528baa4e7913 28 if(S < 0.0) S = 0.0;
dreschpe 0:528baa4e7913 29 if(V > 1.0) V = 1.0;
dreschpe 0:528baa4e7913 30 if(V < 0.0) V = 0.0;
dreschpe 0:528baa4e7913 31
dreschpe 0:528baa4e7913 32 h = H / 60.0;
dreschpe 0:528baa4e7913 33 i = (int) h;
dreschpe 0:528baa4e7913 34 f = h - i;
dreschpe 0:528baa4e7913 35 p = V * (1.0 - S);
dreschpe 0:528baa4e7913 36 q = V * (1.0 - (S * f));
dreschpe 0:528baa4e7913 37 t = V * (1.0 - (S * (1.0 - f)));
dreschpe 0:528baa4e7913 38
dreschpe 0:528baa4e7913 39 switch(i) {
dreschpe 0:528baa4e7913 40 case 0:
dreschpe 0:528baa4e7913 41 r = V * 255;
dreschpe 0:528baa4e7913 42 g = t * 255;
dreschpe 0:528baa4e7913 43 b = p * 255;
dreschpe 0:528baa4e7913 44 break;
dreschpe 0:528baa4e7913 45 case 1:
dreschpe 0:528baa4e7913 46 r = q * 255;
dreschpe 0:528baa4e7913 47 g = V * 255;
dreschpe 0:528baa4e7913 48 b = p * 255;
dreschpe 0:528baa4e7913 49 break;
dreschpe 0:528baa4e7913 50 case 2:
dreschpe 0:528baa4e7913 51 r = p * 255;
dreschpe 0:528baa4e7913 52 g = V * 255;
dreschpe 0:528baa4e7913 53 b = t * 255;
dreschpe 0:528baa4e7913 54 break;
dreschpe 0:528baa4e7913 55 case 3:
dreschpe 0:528baa4e7913 56 r = p * 255;
dreschpe 0:528baa4e7913 57 g = q * 255;
dreschpe 0:528baa4e7913 58 b = V * 255;
dreschpe 0:528baa4e7913 59 break;
dreschpe 0:528baa4e7913 60 case 4:
dreschpe 0:528baa4e7913 61 r = t * 255;
dreschpe 0:528baa4e7913 62 g = p * 255;
dreschpe 0:528baa4e7913 63 b = V * 255;
dreschpe 0:528baa4e7913 64 break;
dreschpe 0:528baa4e7913 65 case 5:
dreschpe 0:528baa4e7913 66 default:
dreschpe 0:528baa4e7913 67 r = V * 255;
dreschpe 0:528baa4e7913 68 g = p * 255;
dreschpe 0:528baa4e7913 69 b = q * 255;
dreschpe 0:528baa4e7913 70 break;
dreschpe 0:528baa4e7913 71 }
dreschpe 0:528baa4e7913 72 }
dreschpe 0:528baa4e7913 73
dreschpe 0:528baa4e7913 74
dreschpe 0:528baa4e7913 75 /***************************************************************************/
dreschpe 0:528baa4e7913 76 /* Show a Screen with Text for 5 seconds */
dreschpe 0:528baa4e7913 77 /* A spinner shows the delay */
dreschpe 0:528baa4e7913 78 /***************************************************************************/
dreschpe 0:528baa4e7913 79
dreschpe 0:528baa4e7913 80 ft_void_t Start_Screen(ft_char8_t *str)
dreschpe 0:528baa4e7913 81 {
dreschpe 0:528baa4e7913 82 TFT.DLstart(); // start a new display command list
dreschpe 0:528baa4e7913 83 TFT.DL(CLEAR_COLOR_RGB(255,255,255)); // set the clear color to white
dreschpe 0:528baa4e7913 84 TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
dreschpe 0:528baa4e7913 85 TFT.DL(COLOR_RGB(0x80,0x80,0x00)); // set current color
dreschpe 0:528baa4e7913 86 TFT.Text((TFT.DispWidth/2), TFT.DispHeight/2, 31, OPT_CENTERX, str); // draw Text with font 31
dreschpe 0:528baa4e7913 87 TFT.DL(COLOR_RGB(0xFF,0x00,0x00)); // change current color
dreschpe 0:528baa4e7913 88 TFT.Spinner((TFT.DispWidth/2),TFT.DispHeight/4, 0,0); // draw a animated spinner
dreschpe 0:528baa4e7913 89
dreschpe 0:528baa4e7913 90 TFT.DL(DISPLAY()); // Display the image
dreschpe 0:528baa4e7913 91 TFT.Swap(); // Swap the current display list
dreschpe 0:528baa4e7913 92 TFT.Flush_Co_Buffer(); // Download the command list into fifo
dreschpe 0:528baa4e7913 93
dreschpe 0:528baa4e7913 94 TFT.WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
dreschpe 0:528baa4e7913 95 TFT.Sleep(5000); // Wait 5 s to show
dreschpe 0:528baa4e7913 96 }
dreschpe 0:528baa4e7913 97
dreschpe 0:528baa4e7913 98 // construct the screen and downloasd it to the LCD
dreschpe 0:528baa4e7913 99 void screen_1(unsigned int color,unsigned int bright)
dreschpe 0:528baa4e7913 100 {
dreschpe 0:528baa4e7913 101 TFT.DLstart(); // start a new display command list
dreschpe 0:528baa4e7913 102 TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
dreschpe 0:528baa4e7913 103 TFT.DL(COLOR_RGB(0xff,0xff,0xff)); // set current color to white
dreschpe 0:528baa4e7913 104 TFT.DL(TAG(1)); // assign TAG value 1
dreschpe 0:528baa4e7913 105 //TFT.FgColor(COLOR_RGB(0xff,0,0)); // forground color red
dreschpe 0:528baa4e7913 106 TFT.Dial(249, 86, 55, 0, color); // dial for color
dreschpe 0:528baa4e7913 107 TFT.DL(TAG(2)); // assign TAG value 2
dreschpe 0:528baa4e7913 108 //TFT.FgColor(COLOR_RGB(0,0xff,0)); // forground color green
dreschpe 0:528baa4e7913 109 TFT.Slider(196, 215, 236, 21, 0, bright , 255); // slider for brightness
dreschpe 0:528baa4e7913 110 TFT.DL(COLOR_RGB(0xff,0xff,0xff)); // set current color to white
dreschpe 0:528baa4e7913 111 TFT.Text(22, 84, 30, 0, "Color"); // text Color
dreschpe 0:528baa4e7913 112 TFT.Text(22, 208, 30, 0, "Brightness");// text Brightness
dreschpe 0:528baa4e7913 113
dreschpe 0:528baa4e7913 114 TFT.DL(POINT_SIZE(100)); // color point around the dial
dreschpe 0:528baa4e7913 115 TFT.DL(BEGIN(POINTS));
dreschpe 0:528baa4e7913 116 TFT.DL(COLOR_RGB(0x0,0x0,0xff)); // color of next point
dreschpe 0:528baa4e7913 117 TFT.DL(VERTEX2II(183,47,0,0)); // set point x,y
dreschpe 0:528baa4e7913 118 TFT.DL(COLOR_RGB(0xff,0x0,0x0));
dreschpe 0:528baa4e7913 119 TFT.DL(VERTEX2II(249,162,0,0));
dreschpe 0:528baa4e7913 120 TFT.DL(COLOR_RGB(0xff,0x0,0xff));
dreschpe 0:528baa4e7913 121 TFT.DL(VERTEX2II(183,123,0,0));
dreschpe 0:528baa4e7913 122 TFT.DL(COLOR_RGB(0xff,0xff,0x0));
dreschpe 0:528baa4e7913 123 TFT.DL(VERTEX2II(317,123,0,0));
dreschpe 0:528baa4e7913 124 TFT.DL(COLOR_RGB(0x0,0xff,0xff));
dreschpe 0:528baa4e7913 125 TFT.DL(VERTEX2II(249,11,0,0));
dreschpe 0:528baa4e7913 126 TFT.DL(COLOR_RGB(0x0,0xff,0x00));
dreschpe 0:528baa4e7913 127 TFT.DL(VERTEX2II(317,50,0,0));
dreschpe 0:528baa4e7913 128 TFT.DL(SCISSOR_XY(10,10)); // define sub area starting at 10,10
dreschpe 0:528baa4e7913 129 TFT.DL(SCISSOR_SIZE(50,50)); // size 50,50
dreschpe 0:528baa4e7913 130 hsv2rgb(color /65536.0 * 360,1.0,bright / 255.0); // calculate rgb color from settings
dreschpe 0:528baa4e7913 131 TFT.DL(CLEAR_COLOR_RGB(r,b,g)); // set filling color to r,g,b
dreschpe 0:528baa4e7913 132 TFT.DL(CLEAR(1,1,1)); // fill the area
dreschpe 0:528baa4e7913 133
dreschpe 0:528baa4e7913 134 TFT.DL(DISPLAY()); // Display the image
dreschpe 0:528baa4e7913 135 TFT.Swap(); // Swap the current display list
dreschpe 0:528baa4e7913 136 TFT.Flush_Co_Buffer(); // Download the command list into fifo
dreschpe 0:528baa4e7913 137 TFT.WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
dreschpe 0:528baa4e7913 138 }
dreschpe 0:528baa4e7913 139
dreschpe 0:528baa4e7913 140 int main()
dreschpe 0:528baa4e7913 141 {
dreschpe 0:528baa4e7913 142 unsigned int color = 0,bright = 0;
dreschpe 0:528baa4e7913 143 ft_uint32_t TrackRegisterVal = 0; // touch track
dreschpe 0:528baa4e7913 144
dreschpe 0:528baa4e7913 145 Start_Screen("RGB DEMO2 START"); // Show start screen
dreschpe 0:528baa4e7913 146 TFT.Calibrate(); // calibrate the touch screen
dreschpe 0:528baa4e7913 147
dreschpe 0:528baa4e7913 148 /* Set the tracker for the dial - define the Area for touching */
dreschpe 0:528baa4e7913 149 TFT.Track(249, 86, 1, 1, 1); // Dial - dimension 1,1 means rotary
dreschpe 0:528baa4e7913 150 TFT.Track(179, 199, 277, 48, 2); // Slider
dreschpe 0:528baa4e7913 151 TFT.Flush_Co_Buffer(); // Download the commands into fifo
dreschpe 0:528baa4e7913 152 TFT.WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
dreschpe 0:528baa4e7913 153 screen_1(color,bright); // paint screen
dreschpe 0:528baa4e7913 154
dreschpe 0:528baa4e7913 155 /* the demo is updating the screen in a endless loop */
dreschpe 0:528baa4e7913 156 while(1) {
dreschpe 0:528baa4e7913 157 ft_uint8_t tagval = 0;
dreschpe 0:528baa4e7913 158 TrackRegisterVal = TFT.Rd32(REG_TRACKER); // check if one of the two tracking fields is touched
dreschpe 0:528baa4e7913 159 tagval = TrackRegisterVal & 0xff;
dreschpe 0:528baa4e7913 160 if(0 != tagval) { // touch -> get new values
dreschpe 0:528baa4e7913 161 if(1 == tagval) { // the dial touched
dreschpe 0:528baa4e7913 162 color = TrackRegisterVal>>16; // get the new value
dreschpe 0:528baa4e7913 163 } else if(2 == tagval) { // the slider is touched
dreschpe 0:528baa4e7913 164 bright = TrackRegisterVal>>16; // get new slider value
dreschpe 0:528baa4e7913 165 bright = bright * 255/65536; // scale it down to 255
dreschpe 0:528baa4e7913 166 }
dreschpe 0:528baa4e7913 167 screen_1(color,bright); // paint new screen
dreschpe 0:528baa4e7913 168 TFT.Sleep(10); // wait 10ms for next check
dreschpe 0:528baa4e7913 169 }
dreschpe 0:528baa4e7913 170
dreschpe 0:528baa4e7913 171 } // end of display loop
dreschpe 0:528baa4e7913 172 }
dreschpe 0:528baa4e7913 173
dreschpe 0:528baa4e7913 174
dreschpe 0:528baa4e7913 175