lpd6803.h

Go to the documentation of this file.

#pragma once

 
#include "fl/stl/stdint.h"
#include "fl/stl/array.h"
#include "fl/chipsets/encoders/encoder_utils.h"
#include "fl/chipsets/encoders/encoder_constants.h"
#include "fl/stl/noexcept.h"
 
namespace fl {

template <typename InputIterator, typename OutputIterator>
void encodeLPD6803(InputIterator first, InputIterator last, OutputIterator out) FL_NOEXCEPT {
    // Start boundary: 4 bytes of 0x00
    *out++ = 0x00;
    *out++ = 0x00;
    *out++ = 0x00;
    *out++ = 0x00;
 
    // LED data: 16-bit format (1bbbbbgggggrrrrr, count as we go)
    size_t num_leds = 0;
    while (first != last) {
        const fl::array<u8, BYTES_PER_PIXEL_RGB>& pixel = *first;
 
        // RGB order: 0=R, 1=G, 2=B
        u16 command = lpd6803EncodeRGB(pixel[0], pixel[1], pixel[2]);
 
        *out++ = static_cast<u8>(command >> 8);   // MSB
        *out++ = static_cast<u8>(command & 0xFF); // LSB
 
        ++first;
        ++num_leds;
    }
 
    // End boundary: (num_leds / 32) DWords of 0xFF000000
    size_t end_dwords = (num_leds / 32);
    for (size_t i = 0; i < end_dwords; i++) {
        *out++ = 0xFF;
        *out++ = 0x00;
        *out++ = 0x00;
        *out++ = 0x00;
    }
}
 
} // namespace fl