Diff: main.cpp

Revision:

0:7d943f226caa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Dec 20 21:53:30 2012 +0000
@@ -0,0 +1,124 @@
+#include "mbed.h"
+#include "GD.h"
+#include "shield.h"
+
+SPI spi(ARD_MOSI, ARD_MISO, ARD_SCK);
+GDClass GD(ARD_MOSI, ARD_MISO, ARD_SCK, ARD_D9, USBTX, USBRX) ;
+
+
+DigitalIn down(ARD_A2);
+DigitalIn up(ARD_A3);
+DigitalIn left(ARD_A1);
+DigitalIn right(ARD_A0);
+DigitalIn a(ARD_D7);
+DigitalIn b(ARD_D4);
+DigitalIn c(ARD_D5);
+DigitalIn start(ARD_D6);
+AnalogIn Ain1(ARD_A4);
+AnalogIn Ain2(ARD_A5);
+
+
+void setup()
+{
+    down.mode(PullUp);
+    up.mode(PullUp);
+    left.mode(PullUp);
+    right.mode(PullUp);
+    a.mode(PullUp);
+    b.mode(PullUp);
+    c.mode(PullUp);
+    start.mode(PullUp);
+
+
+    GD.begin();
+    GD.ascii();
+
+    GD.wr16(RAM_SPRPAL + 2 * 255, TRANSPARENT);
+    byte i;
+    // draw 32 circles into 32 sprite images
+    for (i = 0; i < 32; i++) {
+        GD.wr16(RAM_SPRPAL + 2 * i, RGB(8 * i, 64, 255 - 8 * i));
+        int dst = RAM_SPRIMG + 256 * i;
+        GD.__wstart(dst);
+        byte x, y;
+        int r2 = min(i * i, 256);
+        for (y = 0; y < 16; y++) {
+            for (x = 0; x < 16; x++) {
+                byte pixel;
+                if ((x * x + y * y) <= r2)
+                    pixel = i;    // use color above
+                else
+                    pixel = 0xff; // transparent
+                spi.write(pixel);
+            }
+        }
+        GD.__end();
+    }
+}
+
+void circle(int xpos, int ypos, byte a)
+{
+    byte sprnum = 0;
+    GD.sprite(sprnum++, xpos + 16, ypos + 16, a, 0, 0);
+    GD.sprite(sprnum++, xpos +  0, ypos + 16, a, 0, 2);
+    GD.sprite(sprnum++, xpos + 16, ypos +  0, a, 0, 4);
+    GD.sprite(sprnum++, xpos +  0, ypos +  0, a, 0, 6);
+}
+
+static int bbits()
+{
+    int r = 0;
+    r |= (up.read() << 0);
+    r |= (down.read() << 1);
+    r |= (left.read() << 2);
+    r |= (right.read() << 3);
+    r |= (a.read() << 4);
+    r |= (b.read() << 5);
+    r |= (c.read() << 6);
+    r |= (start.read() << 7);
+    return r;
+}
+static int xcoord = 0;
+static int ycoord = 0;
+static int ands = 0x00ff, ors = 0x0000;
+
+void loop()
+{
+    int bb = bbits();
+
+    GD.putstr(20, 10, (bb & 0x0001) ? "-" : "U");
+    GD.putstr(20, 20, (bb & 0x0002) ? "-" : "D");
+    GD.putstr(15, 15, (bb & 0x0004) ? "-" : "L");
+    GD.putstr(25, 15, (bb & 0x0008) ? "-" : "R");
+
+    GD.putstr(35, 25, (bb & 0x0010) ? "-" : "A");
+    GD.putstr(40, 25, (bb & 0x0020) ? "-" : "B");
+    GD.putstr(45, 25, (bb & 0x0040) ? "-" : "C");
+    GD.putstr(35, 15, (bb & 0x0080) ? "-    " : "Start");
+
+    ands &= bb;
+    ors |= bb;
+
+    if (ands == 0 && ors == 0x00ff)
+        GD.putstr(20, 24, "BUTTONS OK");
+        
+    xcoord = Ain1 * 255;
+    ycoord = Ain2 * 255;
+    char msg[20];
+    sprintf(msg, "X=%4d, Y=%4d", xcoord, ycoord);
+    GD.putstr(0, 36, msg);
+
+    circle(xcoord / 4, 255 - ycoord / 4, (bb & 0x10) ? 15 : 31);
+
+}
+
+
+int main()
+{
+    setup();
+    while(1) {
+        loop();
+    }
+}
+
+