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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* 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.
*/
#pragma once
#include <string>
#include <mraa/aio.hpp>
#include <mraa/gpio.hpp>
#include <mraa/spi.hpp>
#define HIGH 1
#define LOW 0
namespace upm {
/**
* @brief FastPixel LPD8806 library
* @defgroup lpd8806 libupm-lpd8806
* @ingroup adafruit spi led
*/
/**
* @library lpd8806
* @sensor lpd8806
* @comname LPD8806 RGB LED Strip Controller
* @type led
* @man adafruit
* @con spi
*
* @brief API for the LPD8806 RGB LED Strip Controller
*
* FastPixel* LPD8806 is an RGB LED strip controller.
*
* @image html lpd8806.jpg
* @snippet lpd8806.cxx Interesting
*/
class LPD8806 {
public:
/**
* Instantiates an LPD8806 object
*
* @param pixelCount Number of pixels in the strip
* @param csn Chip select pin
*/
LPD8806 (uint16_t pixelCount, uint8_t csn);
/**
* LPD8806 object destructor; basically, it frees the allocated
* pixel buffer.
*/
~LPD8806 ();
/**
* @param pixelOffset Pixel offset in the strip of the pixel
* @param r Red LED
* @param g Green LED
* @param b Blue LED
*/
void setPixelColor (uint16_t pixelOffset, uint8_t r, uint8_t g, uint8_t b);
/**
* Writes the data stored in the array of pixels to the chip
*/
void show (void);
/**
* Returns the length of the LED strip
*/
uint16_t getStripLength (void);
/**
* Returns the name of the component
*/
std::string name()
{
return m_name;
}
private:
std::string m_name;
mraa::Spi m_spi;
mraa::Gpio m_csnPinCtx;
uint8_t* m_pixels;
uint8_t m_pixelsCount;
uint8_t readRegister (uint8_t reg);
void writeRegister (uint8_t reg, uint8_t data);
/**
* Sets the chip select pin to LOW
*/
mraa::Result CSOn ();
/**
* Sets the chip select pin to HIGH
*/
mraa::Result CSOff ();
};
}
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