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 26:ac5d0e18c7b6, committed 2014-01-02

Comitter:
bikeNomad
Date:
Thu Jan 02 19:44:43 2014 +0000
Parent:
25:751c89f7e654
Child:
27:88c2abdf5eb9
Commit message:
adjusted timing from 420/840 nsec to 350/700 per datasheet

Changed in this revision

WS2811.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/WS2811.cpp	Thu Jan 02 19:42:14 2014 +0000
+++ b/WS2811.cpp	Thu Jan 02 19:44:43 2014 +0000
@@ -51,8 +51,8 @@
 #define NSEC_TO_TICKS(nsec) ((nsec)*48/1000)
 static const uint32_t CLK_NSEC = 1250;
 static const uint32_t tpm_period    = NSEC_TO_TICKS(CLK_NSEC);
-static const uint32_t tpm_p0_period = NSEC_TO_TICKS(CLK_NSEC / 3);
-static const uint32_t tpm_p1_period = NSEC_TO_TICKS(CLK_NSEC * 2 / 3);
+static const uint32_t tpm_p0_period = NSEC_TO_TICKS(350);
+static const uint32_t tpm_p1_period = NSEC_TO_TICKS(700);
 
 enum DMA_MUX_SRC {
     DMA_MUX_SRC_TPM0_CH_0     = 24,