Erik Tryggvason / Mbed 2 deprecated WS2812_Fader

A program that fades between a selection of colors.

Dependencies:   PixelArray WS2812 mbed

Files at this revision

API Documentation at this revision

Revision 2:381421ec57e1, committed 2017-03-12

Comitter:
theros
Date:
Sun Mar 12 22:23:08 2017 +0000
Parent:
1:ad5c2cfb2002
Child:
3:b99f66d3e77e
Commit message:
Corrected assignment of colorFrom/colorTo values at end of each loop

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Sun Mar 12 16:51:05 2017 +0000
+++ b/main.cpp	Sun Mar 12 22:23:08 2017 +0000
@@ -4,7 +4,7 @@
 
 #define WS2812_BUF 77   //number of LEDs in the array
 #define NUM_COLORS 6    //number of colors to store in the array
-#define NUM_STEPS 32    //number of steps between colors
+#define NUM_STEPS 8    //number of steps between colors
 
 DigitalIn usrBtn(USER_BUTTON);
 DigitalOut usrLed(LED1);
@@ -42,15 +42,6 @@
     // Now the buffer is written, write it to the led array.
     while (1) 
     {
-        if ((colorIdx + 1) > NUM_COLORS)
-        {
-            colorTo = 0;
-        }
-        else
-        {
-            colorTo = (colorIdx + 1);
-        }
-        
         //get starting RGB components for interpolation
         std::size_t c1 = colorbuf[colorFrom];
         std::size_t r1 = (c1 & 0xff0000) >> 16;
@@ -85,6 +76,7 @@
             }
         }
         
+        colorFrom = colorIdx;
         colorIdx++;
         
         if (colorIdx >= NUM_COLORS)
@@ -92,6 +84,6 @@
             colorIdx = 0;
         }
         
-        colorFrom = colorIdx;
+        colorTo = colorIdx;
     }
 }