Antonio De Lima Fernandes / Mbed 2 deprecated GUILED_8x8_Demo

Simple 8x8 LED Matrix controller which interfaces with a Processing GUI over serial to display sketches

Dependencies:   Multi_WS2811 mbed

Fork of Multi_WS2811_test by Ned Konz

Files at this revision

API Documentation at this revision

Revision 10:62368b801d16, committed 2013-02-19

Comitter:
heroic
Date:
Tue Feb 19 08:39:39 2013 +0000
Parent:
9:dd524af149e6
Child:
11:d127f93be182
Commit message:
Add ability to slow down ws2811 communications

Changed in this revision

WS2811.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/WS2811.cpp	Wed Nov 14 05:06:29 2012 +0000
+++ b/WS2811.cpp	Tue Feb 19 08:39:39 2013 +0000
@@ -1,4 +1,4 @@
-// WS2811 driver, kinda.
+// 800 KHz WS2811 driver, kinda.
 //
 // Parameterized and modified to use soft SPI.
 // Jas Strong <jasmine@electronpusher.org>
@@ -7,6 +7,9 @@
 #include "LedStrip.h"
 #include "WS2811.h"
 
+extern int onewire_speed_multiplier;   // speed setting for ws2811 et al.
+
+
 WS2811::WS2811(PinName dataPin, PinName clockPin, int n) :
     dat(dataPin),
     clk(clockPin) {
@@ -22,7 +25,7 @@
         /* do nothing */;
     i=guardtime.read_us();
     printf("ws2811:  1000 iters took %d usec.\n", i);
-    bogocal = (1000 / (i*2.4)); // iterations per bitcell (417 nsec)
+    bogocal = (1000 / (onewire_speed_multiplier * i * 2.4)); // iterations per bitcell (417 nsec)
     printf("ws2811:  calibrating to %d bogojiffies.\n", bogocal);
 }