adjusted the scan timing

Adjusted the scan timing for the 16x16 CPRG hardware to allow for some time
in btween row scans for parasitic capacitance to be drained from the LEDs.

Author: michaelkamprath

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 
 ## [Unreleased]
+### Fixed
+- Added 3 micro-seconds of inter-scan blank time to the 16x16 CPRG examples to give the hardware some tiem to drain the parasitic capacitance from the LEDs.
+- Adjust the Teensy scan rate faster as under some circumstances subtle scan blinking was perceptible. 
+
 ## [1.2.0] - 2018-12-24
 
 ### Fixed

examples/16x16-matrix/conway-game-of-life-16x16-cprg/conway-game-of-life-16x16-cprg.ino

@@ -246,7 +246,7 @@ RGBColorType CellUniverse::getColorForLifeState( LifeState state ) const {
 // PROGRAM BEGINS
 //
 
-RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW);
+RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW, 3);
 
 CellUniverse uni(leds, 500000);
 

examples/16x16-matrix/dot-chaser-16x16-cprg/dot-chaser-16x16-cprg.ino

@@ -88,7 +88,7 @@ public:
 
 };
 
-RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW);
+RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW, 3);
 Animation ani(&leds);
 
 void setup() {

examples/16x16-matrix/plasma-16x16-cprg/plasma-16x16-cprg.ino

@@ -28,7 +28,7 @@ const float VERT_SPACE_STRETCH_FACTOR = 3.0;
 const float HORIZ_SPACE_STRETCH_FACTOR = 3.0;
 const float TIME_DILATION = 20.0;
 
-RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW);
+RGBLEDMatrix leds(16,16, RGBLEDMatrix::RGB_GROUPS_CPRG8, HIGH, LOW, 3);
 
 int mapSineToRange( float sineValue, int rangeMax ) {
   return rangeMax*(sineValue+1.0)/2.0;

src/BaseLEDMatrix.cpp

@@ -265,7 +265,7 @@ void BaseLEDMatrix::stopScanning(void) {
 
 unsigned int BaseLEDMatrix::nextRowScanTimerInterval(void) const {
 	// Calculates the microseconds for each scan	
-	return  100*this->baseIntervalMultiplier( _scanPass );
+	return  50*this->baseIntervalMultiplier( _scanPass );
 }
 
 #pragma mark ESP32 Handlers