sk9822.h File Reference

Detailed Description

SK9822 SPI chipset encoder.

Free function encoder for SK9822 chipsets. SK9822 is nearly identical to APA102, with one key difference: end frame uses 0x00 instead of 0xFF.

Protocol:

• Start frame: 4 bytes of 0x00
• LED data: [0xE0|brightness][B][G][R] (4 bytes per LED)
• End frame: ⌈num_leds/32⌉ DWords of 0x00 (differs from APA102)

Brightness modes:

• Global: All LEDs use same 5-bit brightness
• Per-LED: Each LED has individual brightness
• Full: All LEDs at maximum brightness (31)

Definition in file sk9822.h.

#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/compiler_control.h"
#include "fl/stl/noexcept.h"

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Namespaces
namespace	fl
	Base definition for an LED controller.

Functions
template<typename InputIterator, typename OutputIterator>
void	fl::encodeSK9822 (InputIterator first, InputIterator last, OutputIterator out, u8 global_brightness=31) FL_NOEXCEPT
	Encode pixel data in SK9822 format with global brightness.
template<typename InputIterator, typename OutputIterator>
FL_NO_INLINE_IF_AVR void	fl::encodeSK9822_AutoBrightness (InputIterator first, InputIterator last, OutputIterator out) FL_NOEXCEPT
	Encode pixel data in SK9822 format (auto-detected brightness from first pixel)
template<typename InputIterator, typename BrightnessIterator, typename OutputIterator>
void	fl::encodeSK9822_HD (InputIterator first, InputIterator last, BrightnessIterator brightness_first, OutputIterator out) FL_NOEXCEPT
	Encode pixel data in SK9822 format with per-LED brightness.