Diff: main.cpp

Revision:

3:454d1f4c8fd7

Parent:

2:75727e89a717

Child:

4:25a266a74a4c

--- a/main.cpp	Mon Nov 11 01:33:12 2013 +0000
+++ b/main.cpp	Sun Nov 17 04:37:03 2013 +0000
@@ -27,8 +27,20 @@
 
 int main()
 {
-
-    uLCD.baudrate(115200);
+    // basic printf demo = 16 by 18 characters on screen
+    uLCD.printf("\nHello uLCD World\n"); //Default Green on black text
+    uLCD.printf("\n  Starting Demo...");
+    uLCD.text_width(4); //4X size text
+    uLCD.text_height(4);
+    uLCD.color(RED);
+    for (int i=10; i>=0; --i) {
+        uLCD.locate(1,2);
+        uLCD.printf("%2D",i);
+        wait(.5);
+    }
+    uLCD.cls();
+    uLCD.baudrate(256000); //jack up baud rate to max
+    //demo graphics
     uLCD.background_color(DGREY);
     uLCD.circle(60, 50, 30, 0xFF00FF);
     uLCD.triangle(120, 100, 40, 40, 10, 100, 0x0000FF);
@@ -37,11 +49,59 @@
     uLCD.pixel(60, 60, BLACK);
     uLCD.read_pixel(120, 70);
     uLCD.circle(120, 60, 10, BLACK);
-    uLCD.set_font(FONT_8X8);
+    uLCD.set_font(FONT_7X8);
     uLCD.text_mode(TRANSPARENT);
     uLCD.text_char('B', 9, 8, BLACK);
     uLCD.text_char('I',10, 8, BLACK);
     uLCD.text_char('G',11, 8, BLACK);
-    uLCD.text_string("This is a test of string", 1, 14, FONT_5X7, WHITE);
-
+    uLCD.text_string("This is a test of string", 1, 4, FONT_7X8, WHITE);
+    wait(2);
+    // printf text only mode demo
+    uLCD.background_color(BLUE);
+    uLCD.cls();
+    uLCD.locate(0,0);
+    uLCD.color(WHITE);
+    uLCD.textbackground_color(BLUE);
+    uLCD.set_font(FONT_7X8);
+    uLCD.text_mode(OPAQUE);
+    int i=0;
+    while(i<64) {
+        if(i%16==0) uLCD.cls();
+        uLCD.printf("TxtLine %2D Page %D\n",i%16,i/16 );
+        i++; //16 lines with 18 charaters per line
+    }
+//draw an image pixel by pixel
+    uLCD.background_color(BLACK);
+    uLCD.cls();
+//compute Mandelbrot image for display
+//image size in pixels and  setup
+    const unsigned ImageHeight=128;
+    const unsigned ImageWidth=128;
+    double MinRe = -0.75104;
+    double MaxRe = -0.7408;
+    double MinIm = 0.10511;
+    double MaxIm = MinIm+(MaxRe-MinRe)*ImageHeight/ImageWidth;
+    double Re_factor = (MaxRe-MinRe)/(ImageWidth-1);
+    double Im_factor = (MaxIm-MinIm)/(ImageHeight-1);
+    unsigned MaxIterations = 4096;
+    for(unsigned y=0; y<ImageHeight; ++y) {
+        double c_im = MaxIm - y*Im_factor;
+        for(unsigned x=0; x<ImageWidth; ++x) {
+            double c_re = MinRe + x*Re_factor;
+            double Z_re = c_re, Z_im = c_im;
+            bool isInside = true;
+            int niterations=0;
+            for(unsigned n=0; n<MaxIterations; ++n) {
+                double Z_re2 = Z_re*Z_re, Z_im2 = Z_im*Z_im;
+                if(Z_re2 + Z_im2 > 4) {
+                    niterations = n;
+                    isInside = false;
+                    break;
+                }
+                Z_im = 2*Z_re*Z_im + c_im;
+                Z_re = Z_re2 - Z_im2 + c_re;
+            }
+            if(isInside==false) uLCD.pixel(x,y,((niterations & 0xFC0)<<14)+((niterations & 0x38)<<9)+((niterations & 0x07)<<5) );
+        }
+    }
 }