APA102VController

gistfile1.cpp

template <uint8_t DATA_PIN, uint8_t CLOCK_PIN, EOrder RGB_ORDER = BGR, uint8_t SPI_SPEED = DATA_RATE_MHZ(24)>
class APA102VController : public CLEDController {
	typedef SPIOutput<DATA_PIN, CLOCK_PIN, SPI_SPEED> SPI;
	SPI mSPI;

	void startBoundary() { mSPI.writeWord(0); mSPI.writeWord(0); }
	void endBoundary(int nLeds) { int nBytes = (nLeds/64); do { mSPI.writeByte(0xFF); mSPI.writeByte(0x00); mSPI.writeByte(0x00); mSPI.writeByte(0x00); } while(nBytes--); }

	inline void writeLed(uint8_t b0, uint8_t b1, uint8_t b2, uint8_t v) __attribute__((always_inline)) {
		mSPI.writeByte(0xE0 | (v&0x1F)); mSPI.writeByte(b0); mSPI.writeByte(b1); mSPI.writeByte(b2);
	}

public:
	APA102VController() {}

	virtual void init() {
		mSPI.init();
	}

	virtual void clearLeds(int nLeds) {
		showColor(CRGB(0,0,0), nLeds, CRGB(0,0,0),0);
	}

  /// show function w/integer brightness, will scale for color correction and temperature
    void show(const struct CRGB *data, int nLeds, uint8_t brightness, const uint8_t *vdata) {
        show(data, nLeds, getAdjustment(brightness), vdata);
    }

    /// show function w/integer brightness, will scale for color correction and temperature
    void showColor(const struct CRGB &data, int nLeds, uint8_t brightness, uint8_t v) {
        showColor(data, nLeds, getAdjustment(brightness), v);
    }

protected:

	virtual void showColor(const struct CRGB & data, int nLeds, CRGB scale) { showColor(data, nLeds, scale, 0x1F); }

	virtual void showColor(const struct CRGB & data, int nLeds, CRGB scale, const uint8_t & v) {
		PixelController<RGB_ORDER> pixels(data, nLeds, scale, getDither());

		mSPI.select();

		startBoundary();
		for(int i = 0; i < nLeds; i++) {
			writeLed(pixels.loadAndScale0(), pixels.loadAndScale1(), pixels.loadAndScale2(),v);
			pixels.stepDithering();
		}
		endBoundary(nLeds);

		mSPI.waitFully();
		mSPI.release();
	}

	virtual void show(const struct CRGB *data, int nLeds, CRGB scale) {
                show(data, nLeds, scale, NULL);
        }

	virtual void show(const struct CRGB *data, int nLeds, CRGB scale, const uint8_t *vdata) {
		PixelController<RGB_ORDER> pixels(data, nLeds, scale, getDither());

		mSPI.select();

		startBoundary();
		for(int i = 0; i < nLeds; i++) {
			writeLed(pixels.loadAndScale0(), pixels.loadAndScale1(), pixels.loadAndScale2(),(vdata ? vdata[i] : 0x1F));
			pixels.advanceData();
			pixels.stepDithering();
		}
		endBoundary(nLeds);
		mSPI.waitFully();
		mSPI.release();
	}


};