showPixels()

template<int DATA_PIN, fl::u8 CLOCK_PIN, EOrder RGB_ORDER = RGB, fl::u32 SPI_SPEED = DATA_RATE_MHZ(1)>

virtual void MY9221Controller< DATA_PIN, CLOCK_PIN, RGB_ORDER, SPI_SPEED >::showPixels ( PixelController< RGB_ORDER > & pixels )

inlineprotectedvirtual

Send the LED data to the strip.

Parameters

pixels

the PixelController object for the LED data

Definition at line 105 of file my9221.h.

                                                                              {
        // Ensure known idle levels before the first edge.
        DataPin::lo();
        ClockPin::lo();
 
        while (pixels.has(1)) {
            fl::u8 ch[4][3] = {
                {0, 0, 0},
                {0, 0, 0},
                {0, 0, 0},
                {0, 0, 0}
            };
 
            // Map up to 4 CRGB pixels onto one chip: LED0->OUT0 .. LED3->OUT3.
            for (int led = 0; led < 4 && pixels.has(1); ++led) {
                ch[led][0] = pixels.loadAndScale0();
                ch[led][1] = pixels.loadAndScale1();
                ch[led][2] = pixels.loadAndScale2();
                pixels.advanceData();
                pixels.stepDithering();
            }
 
            sendWord(kCommandWord);
 
            // Hardware shift order is OUT3, OUT2, OUT1, OUT0.
            for (int out = 3; out >= 0; --out) {
                sendLed(ch[out][0], ch[out][1], ch[out][2]);
            }
        }
 
        latch();
    }

References FL_NO_EXCEPT, kCommandWord, latch(), sendLed(), and sendWord().

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