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108 lines
4.1 KiB
C++
108 lines
4.1 KiB
C++
#include "hlw8012.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace hlw8012 {
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static const char *const TAG = "hlw8012";
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// valid for HLW8012 and CSE7759
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static const uint32_t HLW8012_CLOCK_FREQUENCY = 3579000;
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void HLW8012Component::setup() {
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float reference_voltage = 0;
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ESP_LOGCONFIG(TAG, "Setting up HLW8012...");
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this->sel_pin_->setup();
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this->sel_pin_->digital_write(this->current_mode_);
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this->cf_store_.pulse_counter_setup(this->cf_pin_);
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this->cf1_store_.pulse_counter_setup(this->cf1_pin_);
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// Initialize multipliers
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if (this->sensor_model_ == HLW8012_SENSOR_MODEL_BL0937) {
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reference_voltage = 1.218f;
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this->power_multiplier_ =
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reference_voltage * reference_voltage * this->voltage_divider_ / this->current_resistor_ / 1721506.0f;
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this->current_multiplier_ = reference_voltage / this->current_resistor_ / 94638.0f;
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this->voltage_multiplier_ = reference_voltage * this->voltage_divider_ / 15397.0f;
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} else {
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// HLW8012 and CSE7759 have same reference specs
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reference_voltage = 2.43f;
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this->power_multiplier_ = reference_voltage * reference_voltage * this->voltage_divider_ / this->current_resistor_ *
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64.0f / 24.0f / HLW8012_CLOCK_FREQUENCY;
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this->current_multiplier_ = reference_voltage / this->current_resistor_ * 512.0f / 24.0f / HLW8012_CLOCK_FREQUENCY;
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this->voltage_multiplier_ = reference_voltage * this->voltage_divider_ * 256.0f / HLW8012_CLOCK_FREQUENCY;
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}
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}
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void HLW8012Component::dump_config() {
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ESP_LOGCONFIG(TAG, "HLW8012:");
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LOG_PIN(" SEL Pin: ", this->sel_pin_)
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LOG_PIN(" CF Pin: ", this->cf_pin_)
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LOG_PIN(" CF1 Pin: ", this->cf1_pin_)
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ESP_LOGCONFIG(TAG, " Change measurement mode every %u", this->change_mode_every_);
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ESP_LOGCONFIG(TAG, " Current resistor: %.1f mΩ", this->current_resistor_ * 1000.0f);
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ESP_LOGCONFIG(TAG, " Voltage Divider: %.1f", this->voltage_divider_);
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LOG_UPDATE_INTERVAL(this)
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LOG_SENSOR(" ", "Voltage", this->voltage_sensor_)
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LOG_SENSOR(" ", "Current", this->current_sensor_)
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LOG_SENSOR(" ", "Power", this->power_sensor_)
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LOG_SENSOR(" ", "Energy", this->energy_sensor_)
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}
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float HLW8012Component::get_setup_priority() const { return setup_priority::DATA; }
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void HLW8012Component::update() {
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// HLW8012 has 50% duty cycle
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pulse_counter::pulse_counter_t raw_cf = this->cf_store_.read_raw_value();
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pulse_counter::pulse_counter_t raw_cf1 = this->cf1_store_.read_raw_value();
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float cf_hz = raw_cf / (this->get_update_interval() / 1000.0f);
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if (raw_cf <= 1) {
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// don't count single pulse as power
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cf_hz = 0.0f;
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}
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float cf1_hz = raw_cf1 / (this->get_update_interval() / 1000.0f);
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if (raw_cf1 <= 1) {
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// don't count single pulse as anything
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cf1_hz = 0.0f;
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}
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if (this->nth_value_++ < 2) {
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return;
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}
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float power = cf_hz * this->power_multiplier_;
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if (this->change_mode_at_ != 0) {
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// Only read cf1 after one cycle. Apparently it's quite unstable after being changed.
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if (this->current_mode_) {
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float current = cf1_hz * this->current_multiplier_;
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ESP_LOGD(TAG, "Got power=%.1fW, current=%.1fA", power, current);
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if (this->current_sensor_ != nullptr) {
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this->current_sensor_->publish_state(current);
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}
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} else {
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float voltage = cf1_hz * this->voltage_multiplier_;
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ESP_LOGD(TAG, "Got power=%.1fW, voltage=%.1fV", power, voltage);
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if (this->voltage_sensor_ != nullptr) {
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this->voltage_sensor_->publish_state(voltage);
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}
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}
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}
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if (this->power_sensor_ != nullptr) {
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this->power_sensor_->publish_state(power);
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}
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if (this->energy_sensor_ != nullptr) {
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cf_total_pulses_ += raw_cf;
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float energy = cf_total_pulses_ * this->power_multiplier_ / 3600;
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this->energy_sensor_->publish_state(energy);
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}
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if (this->change_mode_at_++ == this->change_mode_every_) {
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this->current_mode_ = !this->current_mode_;
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ESP_LOGV(TAG, "Changing mode to %s mode", this->current_mode_ ? "CURRENT" : "VOLTAGE");
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this->change_mode_at_ = 0;
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this->sel_pin_->digital_write(this->current_mode_);
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}
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}
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} // namespace hlw8012
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} // namespace esphome
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