apa102.h File Reference

Detailed Description

APA102/DOTSTAR SPI chipset encoder.

Free function encoder for APA102/DOTSTAR chipsets.

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 0xFF

Brightness modes:

• Global: All LEDs use same 5-bit brightness (from first pixel)
• Per-LED: Each LED has individual brightness (if brightness iterator provided)
• Full: All LEDs at maximum brightness (31)

Note

Brightness is 5-bit (0-31), stored in bits 0-4 of header byte

Definition in file apa102.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::encodeAPA102 (InputIterator first, InputIterator last, OutputIterator out, u8 global_brightness=31) FL_NOEXCEPT
	Encode pixel data in APA102 format with global brightness.
template<typename InputIterator, typename OutputIterator>
FL_NO_INLINE_IF_AVR FL_OPTIMIZE_O2 void	fl::encodeAPA102_AutoBrightness (InputIterator first, InputIterator last, OutputIterator out) FL_NOEXCEPT
	Encode pixel data in APA102 format (auto-detected brightness from first pixel)
template<typename InputIterator, typename BrightnessIterator, typename OutputIterator>
void	fl::encodeAPA102_HD (InputIterator first, InputIterator last, BrightnessIterator brightness_first, OutputIterator out) FL_NOEXCEPT
	Encode pixel data in APA102 format with per-LED brightness.