Ned Konz / Mbed 2 deprecated Multi_WS2811_test

Test program for my Multi_WS2811 library that started out as a fork of heroic/WS2811. My library uses hardware DMA on the FRDM-KL25Z to drive up to 16 strings of WS2811 or WS2812 LEDs in parallel.

Dependencies:   Multi_WS2811 mbed MMA8451Q

Fork of WS2811 by Heroic Robotics

NOTE: I have accidentally pushed changes for another fork of this program that I used in the recent Georgetown Carnival Power Tool Races. When I get some time, I will restore the test program to its original glory.

You can see my power tool racer (Nevermore's Revenge) here

/media/uploads/bikeNomad/img_0482.jpg

This tests my FRDM-KL25Z multi-string WS2811/WS2812 library. It uses the accelerometer to change the rainbow phase on two strings of LEDs as well as the touch sense to change brightness.

A video of this program in operation is here.

Here is the library that I developed to run the LEDs:

Import libraryMulti_WS2811

Library allowing up to 16 strings of 60 WS2811 or WS2812 LEDs to be driven from a single FRDM-KL25Z board. Uses hardware DMA to do a full 800 KHz rate without much CPU burden.

Last commit 13 Jun 2015 by Ned Konz

Files at this revision

API Documentation at this revision

Revision 12:7ebd51549c04, committed 2013-04-11

Comitter:
heroic
Date:
Thu Apr 11 22:16:07 2013 +0000
Parent:
11:d127f93be182
Child:
13:1f65330abe92
Commit message:
Add function to write packed pixels via memcpy (about 150 usec faster)

Changed in this revision

LedStrip.h Show annotated file Show diff for this revision Revisions of this file
WS2811.cpp Show annotated file Show diff for this revision Revisions of this file
WS2811.h Show annotated file Show diff for this revision Revisions of this file 
--- a/LedStrip.h	Wed Feb 20 03:38:25 2013 +0000
+++ b/LedStrip.h	Thu Apr 11 22:16:07 2013 +0000
@@ -18,6 +18,7 @@
   virtual void show(void)=0;
   virtual void blank(void)=0;
   virtual void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b)=0;
+  virtual void setPackedPixels(uint8_t * buffer, uint32_t n)=0;
   virtual void setPixelB(uint16_t n, uint8_t b)=0;
   virtual void setPixelG(uint16_t n, uint8_t g)=0;
   virtual void setPixelR(uint16_t n, uint8_t r)=0;

--- a/WS2811.cpp	Wed Feb 20 03:38:25 2013 +0000
+++ b/WS2811.cpp	Thu Apr 11 22:16:07 2013 +0000
@@ -133,6 +133,11 @@
     pixels[n*3+2] = b;
 }
 
+void WS2811::setPackedPixels(uint8_t * buffer, uint32_t n) {
+    if (n >= numLEDs) return;
+    memcpy(pixels, buffer, (size_t) (n*3));
+}
+
 void WS2811::setPixelColor(uint16_t n, uint32_t c) {
     if (n >= numLEDs) return; // '>=' because arrays are 0-indexed
 

--- a/WS2811.h	Wed Feb 20 03:38:25 2013 +0000
+++ b/WS2811.h	Thu Apr 11 22:16:07 2013 +0000
@@ -25,6 +25,7 @@
   virtual void show(void);
   virtual void blank(void);
   virtual void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
+  virtual void setPackedPixels(uint8_t * buffer, uint32_t n);
   virtual void setPixelB(uint16_t n, uint8_t b);
   virtual void setPixelG(uint16_t n, uint8_t g);
   virtual void setPixelR(uint16_t n, uint8_t r);