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83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/esphal.h"
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#include "esphome/components/output/float_output.h"
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namespace esphome {
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namespace sm2135 {
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class SM2135 : public Component {
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public:
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class Channel;
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void set_data_pin(GPIOPin *data_pin) { data_pin_ = data_pin; }
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void set_clock_pin(GPIOPin *clock_pin) { clock_pin_ = clock_pin; }
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void setup() override;
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void dump_config() override;
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float get_setup_priority() const override { return setup_priority::HARDWARE; }
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/// Send new values if they were updated.
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void loop() override;
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class Channel : public output::FloatOutput {
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public:
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void set_parent(SM2135 *parent) { parent_ = parent; }
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void set_channel(uint8_t channel) { channel_ = channel; }
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protected:
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void write_state(float state) override {
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auto amount = static_cast<uint8_t>(state * 0xff);
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this->parent_->set_channel_value_(this->channel_, amount);
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}
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SM2135 *parent_;
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uint8_t channel_;
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};
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protected:
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void set_channel_value_(uint8_t channel, uint8_t value) {
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if (this->pwm_amounts_[channel] != value) {
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this->update_ = true;
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this->update_channel_ = channel;
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}
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this->pwm_amounts_[channel] = value;
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}
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void write_bit_(bool value) {
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this->clock_pin_->digital_write(false);
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this->data_pin_->digital_write(value);
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this->clock_pin_->digital_write(true);
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}
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void write_byte_(uint8_t data) {
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for (uint8_t mask = 0x80; mask; mask >>= 1) {
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this->write_bit_(data & mask);
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}
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this->clock_pin_->digital_write(false);
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this->data_pin_->digital_write(true);
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this->clock_pin_->digital_write(true);
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}
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void write_buffer_(uint8_t *buffer, uint8_t size) {
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this->data_pin_->digital_write(false);
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for (uint32_t i = 0; i < size; i++) {
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this->write_byte_(buffer[i]);
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}
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this->clock_pin_->digital_write(false);
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this->clock_pin_->digital_write(true);
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this->data_pin_->digital_write(true);
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}
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GPIOPin *data_pin_;
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GPIOPin *clock_pin_;
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uint8_t update_channel_;
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std::vector<uint8_t> pwm_amounts_;
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bool update_{true};
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};
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} // namespace sm2135
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} // namespace esphome
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