Revision 2:69e40ccf506f, committed 2013-05-26

Comitter:

Spencer

Date:

Sun May 26 03:08:58 2013 +0000

Parent:

1:013a9737441d

Child:

3:e5ed5650eb15

Commit message:

Various updates and bug fixes

Changed in this revision

--- 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)

--- a/TLC5940.h	Mon May 20 19:11:44 2013 +0000
+++ b/TLC5940.h	Sun May 26 03:08:58 2013 +0000
@@ -28,7 +28,7 @@
   * before the completion of a GSCLK cycle (4096 pulses). If you are daisy chaining multiple TLC5940s,
   * divide 32Mhz by the number of chips to get a good maximum rate.
   */
-#define GSCLK_SPEED 2500000
+#define GSCLK_SPEED 1000000
 
 /**
   *  This class controls a TLC5940 PWM driver IC.