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:
21:4541da183397
Parent:
20:b9d76e567637
Child:
22:abfed71656bd
--- a/WS2811.h	Sat Dec 21 04:32:21 2013 +0000
+++ b/WS2811.h	Thu Jan 02 00:50:09 2014 +0000
@@ -9,42 +9,50 @@
 
 // Heavily modified by Jas Strong, 2012-10-04
 // Changed to use a virtual base class and to use software SPI.
+//
+// Modified by Ned Konz, December 2013.
+// Using three-phase DMA ala Paul Stoffegren's version.
 
-#include "mbed.h"
-#include "LedStrip.h"
 #ifndef MBED_WS2811_H
 #define MBED_WS2811_H
 
-#ifdef TARGET_KL25Z
-// SPI0 max frequency = fBUS/2 = 24MHz
-// SPI1 max frequency = fSYS/2 = 12MHz
-// but watch out for SPI1 errata using DMA!
-// SPI0: PTA16, PTA17, PTC6, PTC7, PTD2, PTD3
-// SPI1: PTB16, PTB17, PTD6, PTD7, PTE1, PTE3
-#define MOSI_DEFAULT PTD2
-// SPI0: PTA15, PTC5, PTD1/ LED_BLUE
-// SPI1: PTB11, PTD5, PTE2
-#define SCLK_DEFAULT PTD1
-#else
-#endif
+#include "mbed.h"
+#include "LedStrip.h"
+
+#define MAX_LEDS_PER_STRIP 40
 
 class WS2811 : public LedStrip
 {
 public:
-    WS2811(int n, SPI_Type *_spi, PinName mosi = MOSI_DEFAULT, PinName sclk = SCLK_DEFAULT);
-    virtual void begin(void);
-    virtual void show(void);
-    virtual void blank(void);
+    WS2811(unsigned n, unsigned pinNumber);
+
+    virtual void begin();
+    virtual void show();
+    virtual void blank();
 
 private:
-    SPI_Type *spi;
-    PinName mosi;
-    uint8_t dmaBytes[16*3]; // enough for DMA'ing 1 RGB LED
+    Timer guardtime;
+    uint32_t pinMask;
+
+    void writePixel(unsigned n, uint8_t *p);
 
-    Timer guardtime;
+    // Class Static:
+
+    static bool initialized;
+    static uint32_t enabledPins;
+
+    static void writeByte(uint8_t byte, uint32_t mask, uint32_t *dest);
+    static void startDMA();
 
-    void writePixel(uint8_t *p);
-    void writeByte(uint8_t byte, uint8_t *dest);
-    void startDMA();
+    static bool is_dma_done();
+
+    static void hw_init();
+        static void io_init();
+        static void clock_init();
+        static void dma_init();
+        static void tpm_init();
+        static void dma_data_init();
 };
-#endif
\ No newline at end of file
+
+#endif
+