Joel Rosiene / APA102b

Routines to drive a chain of APA102 Leds.

Dependents:   FRDM-K46Z_APA102

Fork of APA102a by Joel Rosiene

Files at this revision

API Documentation at this revision

Revision 8:3bb15df4903d, committed 2015-04-07

Comitter:
rosienej
Date:
Tue Apr 07 13:55:11 2015 +0000
Parent:
7:629583c31cef
Commit message:
corrected the end condition

Changed in this revision

APA102a.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/APA102a.cpp	Tue Apr 07 01:47:36 2015 +0000
+++ b/APA102a.cpp	Tue Apr 07 13:55:11 2015 +0000
@@ -25,6 +25,7 @@
 void APA102a::Repaint()
 {   
     int index;
+    int end_count;
     unsigned int val;
     
     _spi.write(0X00);  // Start
@@ -36,10 +37,10 @@
     {
         for(int c = off;c<(NC+off);c++)
         {
-            int cc = (WF)?(c%NS):((c<NS)?c:NS);
+         //   int cc = (WF)?(c%NS):((c<NS)?c:NS);
          //   if (ZF) 
          //     { if((r&0x01)>0)
-                    index = r*NS + NC+off-cc;
+         //           index = r*NS + NC+off-cc;
          //      else
          //           index = r*NS + cc;}
          //   else 
@@ -52,9 +53,14 @@
             _spi.write(val&0xFF);  
         }
     }
-    _spi.write(0XFF); // Stop
-    _spi.write(0XFF);
-    _spi.write(0XFF);
-    _spi.write(0XFF);
+    
+    end_count = ((NR*NC)>>1);
+    while (end_count>0){
+        _spi.write(0XFF); // Stop
+        end_count = end_count-8;
+        }
+   // _spi.write(0XFF);
+   // _spi.write(0XFF);
+   // _spi.write(0XFF);
     
 }
\ No newline at end of file