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https://github.com/esphome/esphome.git
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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
#include "spi_led_strip.h"
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#include "esphome/core/helpers.h"
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namespace esphome {
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namespace spi_led_strip {
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SpiLedStrip::SpiLedStrip(uint16_t num_leds) {
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this->num_leds_ = num_leds;
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RAMAllocator<uint8_t> allocator;
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this->buffer_size_ = num_leds * 4 + 8;
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this->buf_ = allocator.allocate(this->buffer_size_);
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if (this->buf_ == nullptr) {
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ESP_LOGE(TAG, "Failed to allocate buffer of size %u", this->buffer_size_);
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return;
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}
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this->effect_data_ = allocator.allocate(num_leds);
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if (this->effect_data_ == nullptr) {
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ESP_LOGE(TAG, "Failed to allocate effect data of size %u", num_leds);
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return;
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}
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memset(this->buf_, 0xFF, this->buffer_size_);
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memset(this->buf_, 0, 4);
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}
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void SpiLedStrip::setup() {
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if (this->effect_data_ == nullptr || this->buf_ == nullptr) {
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this->mark_failed();
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return;
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}
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this->spi_setup();
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}
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light::LightTraits SpiLedStrip::get_traits() {
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auto traits = light::LightTraits();
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traits.set_supported_color_modes({light::ColorMode::RGB});
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return traits;
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}
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void SpiLedStrip::dump_config() {
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esph_log_config(TAG,
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"SPI LED Strip:\n"
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" LEDs: %d",
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this->num_leds_);
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if (this->data_rate_ >= spi::DATA_RATE_1MHZ) {
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esph_log_config(TAG, " Data rate: %uMHz", (unsigned) (this->data_rate_ / 1000000));
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} else {
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esph_log_config(TAG, " Data rate: %ukHz", (unsigned) (this->data_rate_ / 1000));
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}
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}
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void SpiLedStrip::write_state(light::LightState *state) {
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if (this->is_failed())
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return;
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#if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE
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{
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char strbuf[49]; // format_hex_pretty_size(16) = 48, fits 16 bytes
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size_t len = std::min(this->buffer_size_, (size_t) 16);
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format_hex_pretty_to(strbuf, sizeof(strbuf), this->buf_, len, ' ');
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esph_log_v(TAG, "write_state: buf = %s", strbuf);
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}
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#endif
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this->enable();
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this->write_array(this->buf_, this->buffer_size_);
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this->disable();
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}
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light::ESPColorView SpiLedStrip::get_view_internal(int32_t index) const {
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size_t pos = index * 4 + 5;
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return {this->buf_ + pos + 2, this->buf_ + pos + 1, this->buf_ + pos + 0, nullptr,
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this->effect_data_ + index, &this->correction_};
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}
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} // namespace spi_led_strip
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} // namespace esphome
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