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

Diff: WS2811.h

Revision:
30:52e9205a8059
Parent:
23:33df42ff2541
--- a/WS2811.h	Fri Jan 03 19:17:24 2014 +0000
+++ b/WS2811.h	Sat Jan 04 00:32:16 2014 +0000
@@ -22,6 +22,7 @@
 #define MAX_LEDS_PER_STRIP 60
 
 extern "C" void DMA0_IRQHandler();
+extern "C" void TPM0_IRQHandler();
 
 class WS2811 : public LedStrip
 {
@@ -33,7 +34,6 @@
     virtual void blank();
 
     static void startDMA();
-    static bool is_dma_done();
 
 private:
     uint32_t pinMask;
@@ -44,7 +44,8 @@
 
     static bool initialized;
     static uint32_t enabledPins;
-    static Timer guardtime;
+    static volatile bool dma_done;
+    static void wait_for_dma_done() { while (!dma_done) __WFI(); }
 
     static void writeByte(uint8_t byte, uint32_t mask, uint32_t *dest);
 
@@ -55,7 +56,7 @@
         static void tpm_init();
         static void dma_data_init();
         
-    friend void DMA0_IRQHandler();
+    friend void TPM0_IRQHandler();
 };
 
 #endif