Diff: TLC5940.cpp

Revision:

2:69e40ccf506f

Parent:

0:be9399a34b15

--- a/TLC5940.cpp	Mon May 20 19:11:44 2013 +0000
+++ b/TLC5940.cpp	Sun May 26 03:08:58 2013 +0000
@@ -26,7 +26,7 @@
     reset_ticker.attach_us(this, &TLC5940::reset, (1000000.0/GSCLK_SPEED) * 4096.0);
     
     // Configure FastPWM output for GSCLK frequency at 50% duty cycle
-    gsclk.period_us(1000000.0/GSCLK_SPEED);
+    gsclk.period_us(1000000.0/(GSCLK_SPEED * 1.05));
     gsclk.write(.5);
 }
 
@@ -48,9 +48,14 @@
 
 void TLC5940::reset()
 {
+    gsclk.write(0);
     // Turn off LEDs
     blank = 1;
     
+    // Virtual function that allows the next data chunk to be set after every GSCLK cycle
+    // Useful for setting the next frame when multiplexing (e.g. LED matrices)
+    setNextData();
+    
     // Latch in data from previous cycle if needed
     if (need_xlat)
     {
@@ -62,13 +67,9 @@
         need_xlat = false;
     }
     
-    // Virtual function that allows the next data chunk to be set after every GSCLK cycle
-    // Useful for setting the next frame when multiplexing (e.g. LED matrices)
-    setNextData();
-        
     // Reset the screen so that it is updating while data is being sent
     blank = 0;
-
+    gsclk.write(.5);
     
     // Do we have new DC data to send?
     if (newDCData)