main.cpp

00001 #include "mbed.h"
00002 #include "SPI_TFTx2.h"
00003 #include "Arial12x12.h"
00004 #include "Arial28x28.h"
00005 #include "TOUCH_TFTx2.h"
00006 
00007 // todo: better calibration for two displays remove offset between displays.  filter noise
00008 // the TFT is connected to SPI pin p11,p12,p13,{p14,p15},p16
00009 // the touch is connected to 17,18,19,20
00010 
00011 TOUCH_TFTx2 tt(p16, p17, p19, p20, p11, p12, p13, p6, p7, p5, "TFT"); // x+,x-,y+,y-,mosi, miso, sclk, cs0, cs1, reset
00012 
00013 int main() {
00014 
00015     unsigned short color = White;
00016     unsigned int brush = 2;
00017     unsigned int dsel = 0;
00018     point p;
00019     tt.claim(stdout);        // send stdout to the TFT display
00020     tt.background(Black);    // set background to black
00021     tt.foreground(White);    // set chars to white
00022     tt.cls();                // clear the screen
00023     tt.set_font((unsigned char*) Arial12x12);  // select the font
00024     tt.set_orientation(1);
00025     if(false){ // bypass calibration
00026         tt.setcal(5570, 34030, 80, 108, 33700, 5780, 82, 108, 32500);
00027     } else {  // calibrate the touch
00028         tt.calibrate();   
00029     }
00030     tt.set_display(2);       // select both displays
00031     tt.locate(0,0);
00032     printf(" x = ");
00033     tt.locate(0,12);
00034     printf(" y = ");
00035     tt.line(0,25,319,25,White);
00036     // the color chosing fields
00037     tt.fillrect(80,0,98,24,White);
00038     tt.fillrect(100,0,118,24,Green);
00039     tt.fillrect(120,0,138,24,Red);
00040     tt.fillrect(140,0,158,24,Blue);
00041     tt.fillrect(160,0,178,24,Yellow);
00042     tt.line(199,0,199,24,White);
00043     // the brushes
00044     tt.fillcircle(210,12,2,White);
00045     tt.fillcircle(230,12,4,White);
00046     tt.fillcircle(250,12,6,White);
00047     tt.fillcircle(270,12,brush,color);
00048     while (1) {
00049         if (tt.is_touched()) {  // touched
00050             p = tt.get_touch();       
00051             p = tt.to_pixel(p);          // convert to pixel pos
00052             if (p.x > tt.width()){
00053                 tt.set_display(1);
00054                 p.x-=tt.width();
00055             }else{
00056                 tt.set_display(0);
00057             }
00058             if (p.y < 26) {        // a button field
00059                 if (p.x > 80 && p.x < 100) {  // White
00060                     color = White;
00061                 }
00062                 if (p.x > 100 && p.x < 120) {  // Green
00063                     color = Green;
00064                 }
00065                 if (p.x > 120 && p.x < 140) {  // Red
00066                     color = Red;
00067                 }
00068                 if (p.x > 140 && p.x < 160) {  // Blue
00069                     color = Blue;
00070                 }
00071                 if (p.x > 160 && p.x < 180) {  // Yellow
00072                     color = Yellow;
00073                 }
00074                 if (p.x > 180 && p.x < 200) {  // Black
00075                     color = Black;
00076                 }
00077                 if (p.x > 200 && p.x < 220) {  // brush 2
00078                     brush = 2;
00079                 }
00080                 if (p.x > 220 && p.x < 240) {  // brush 4
00081                     brush = 4;
00082                 }
00083                 if (p.x > 240 && p.x < 260) {  // brush 6
00084                     brush = 6;
00085                 }
00086                 if (color != Black) {
00087                     tt.fillrect(260,0,280,24,Black);
00088                 } else {
00089                     tt.fillrect(260,0,280,24,White);
00090                 }
00091                 tt.fillcircle(270,12,brush,color);
00092                 if (p.x > 300) {
00093                     tt.fillrect(0,26,319,239,Black);
00094                 }
00095    
00096             } else {
00097                 tt.fillcircle(p.x,p.y,brush,color);
00098                 tt.locate(36,0);
00099                 printf("%3d",p.x);
00100                 tt.locate(36,12);
00101                 printf("%3d",p.y);
00102             }
00103         }
00104     }
00105 }
00106 
00107 
00108 
00109