Diff: main.cpp

Revision:

0:12cb6f0c2788

Child:

1:e04a0ecefa29

diff -r 000000000000 -r 12cb6f0c2788 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Feb 12 19:20:00 2015 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+#include "WS2812.h"
+#include "PixelArray.h"
+
+#define WS2812_BUF 60
+
+WS2812 ws(D9,WS2812_BUF);
+PixelArray px(WS2812_BUF);
+
+DigitalOut led(LED1);
+
+int main()
+{
+
+    ws.useII(2); // use per-pixel intensity scaling
+    
+    // set up the colours we want to draw with
+    int colorbuf[6] = {0x2f0000,0x2f2f00,0x002f00,0x002f2f,0x00002f,0x2f002f};
+
+    // for each of the colours (j) write out 10 of them
+    // the pixels are written at the colour*10, plus the colour position
+    // all modulus 60 so it wraps around
+    for (int i =0; i<6; i++) {
+        for (int j=0; j<10; j++) {
+            px.Set(((i*10)+j)%60,colorbuf[i]);
+        }
+    }
+
+    // now all the colours are computed, add a fade effect using intensity scaling
+    // compute and write the II value for each pixel
+    for (int j=0; j<60; j++) {
+        // px.SetI(pixel position, II value)
+        px.SetI(j%60, 0xf+(0xf*(j%10)));
+    }
+
+
+    // Now the buffer is written, rotate it
+    // by writing it out with an increasing offset
+    while (1) {
+        for (int z=59; z >= 0 ; z--) {
+            ws.write_offsets(px.getBuf(),z,z,z);
+            wait(0.075);
+        }
+    }
+
+}