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

WS2811.h

Committer:
bikeNomad
Date:
2014-01-04
Revision:
30:52e9205a8059
Parent:
23:33df42ff2541

File content as of revision 30:52e9205a8059:

// Mbed library to control WS2801-based RGB LED Strips
// some portions (c) 2011 Jelmer Tiete
// This library is ported from the Arduino implementation of Adafruit Industries
// found at: http://github.com/adafruit/LPD8806
// and their strips: http://www.adafruit.com/products/306
// Released under the MIT License: http://mbed.org/license/mit
//
/*****************************************************************************/

// 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.

#ifndef MBED_WS2811_H
#define MBED_WS2811_H

#include "mbed.h"
#include "LedStrip.h"

#define MAX_LEDS_PER_STRIP 60

extern "C" void DMA0_IRQHandler();
extern "C" void TPM0_IRQHandler();

class WS2811 : public LedStrip
{
public:
    WS2811(unsigned n, unsigned pinNumber);

    virtual void begin();
    virtual void show();
    virtual void blank();

    static void startDMA();

private:
    uint32_t pinMask;

    void writePixel(unsigned n, uint8_t *p);

    // Class Static:

    static bool initialized;
    static uint32_t enabledPins;
    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);

    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();
        
    friend void TPM0_IRQHandler();
};

#endif