apa102.hpp

/*
 * Author: Yannick Adam <yannick.adam@gmail.com>
 * Copyright (c) 2016 Yannick Adam
 *
 * 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 <mraa/gpio.hpp>
#include <mraa/spi.hpp>
#include <string>

#define HIGH 1
#define LOW 0

namespace upm
{
class APA102
{
  public:
    APA102(uint16_t ledCount, uint8_t spiBus, bool batchMode = false, int8_t csn = -1);

    ~APA102();

    void setLed(uint16_t ledIdx, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);

    void setLedBrightness(uint16_t ledIdx, uint8_t brightness);

    void setAllLeds(uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);

    void
    setLeds(uint16_t startIdx, uint16_t endIdx, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);

    void
    setLedsBrightness(uint16_t startIdx, uint16_t endIdx, uint8_t brightness);

    void setLeds(uint16_t startIdx, uint16_t endIdx, uint8_t* colors);

    void setBusSpeed(int hz);

    void pushState();

  private:
    /* Disable implicit copy and assignment operators */
    APA102(const APA102&) = delete;
    APA102 &operator=(const APA102&) = delete;

    mraa::Spi* m_spi;
    mraa::Gpio* m_csnPinCtx;

    uint16_t m_ledCount;
    uint8_t* m_leds;
    uint16_t m_frameLength;

    bool m_batchMode;

    mraa::Result CSOn();
    mraa::Result CSOff();
};
}