Diff: FastPixelLPD8806.h

Revision:

10:5b3be78ce6bd

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+++ b/FastPixelLPD8806.h	Sat May 31 18:41:56 2014 +0000
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+/***************************************************************************/
+// DMA-enabled high data rate driver for Heroic Robotics FastPixel strips.
+// Written by Jas Strong <jasmine@heroicrobotics.com>
+// Copyright (c) 2013-2014 Heroic Robotics, Inc.
+//
+// FastPixel is a family of high performance LED strips available from
+// Heroic Robotics, Inc.  http://heroicrobotics.com/ - check them out!
+//
+// These strips are capable of supporting 18 Mbit/sec when run on PixelPusher
+// hardware;  your performance on mbed is likely to be somewhat lower due to
+// the lack of high performance driver chips on the SPI lines.
+//
+// Heroic Robotics also sells a family of dedicated LED controllers called
+// PixelPusher-  almost certainly the best LED controller in the world.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+// Some portions originally from:
+//
+// Mbed library to control LPD8806-based RGB LED Strips
+// (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
+//
+// Parameterized and modified to use soft SPI.
+// Jas Strong <jasmine@electronpusher.org>
+// Then remonstered to use hardware SPI for blast mode.
+/*****************************************************************************/
+ 
+// Heavily modified by Jas Strong, 2012-10-04
+// Changed to use a virtual base class and to use software SPI.
+
+#include "mbed.h"
+#include "LedStrip.h"
+#include "MODDMA.h"
+
+#ifndef MBED_FastPixelLPD8806_H
+#define MBED_FastPixelLPD8806_H
+
+class FastPixelLPD8806 : public LedStrip {
+
+ public:
+
+  FastPixelLPD8806(PinName dataPin, PinName clockPin, int n);
+  virtual void begin(void);
+  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);
+  virtual void setPixelColor(uint16_t n, uint32_t c);
+  virtual uint16_t numPixels(void);
+  virtual uint32_t Color(uint8_t, uint8_t, uint8_t);
+  virtual uint32_t total_luminance(void);
+  
+ private:
+  SPI _spi;
+  void write(uint8_t byte);
+  uint8_t *pixels;     // Holds LED color values
+  uint16_t numLEDs;     // Number of RGB LEDs in strand
+  MODDMA_Config * dma_config;
+  int strip_num;
+  
+
+  uint32_t clock_mask;
+  uint32_t data_mask;
+    
+};
+#endif
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