mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 11:44:13 +01:00
91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
#include "hlw8012.h"
|
|
#include "esphome/core/log.h"
|
|
|
|
namespace esphome {
|
|
namespace hlw8012 {
|
|
|
|
static const char *TAG = "hlw8012";
|
|
|
|
static const uint32_t HLW8012_CLOCK_FREQUENCY = 3579000;
|
|
static const float HLW8012_REFERENCE_VOLTAGE = 2.43f;
|
|
|
|
void HLW8012Component::setup() {
|
|
ESP_LOGCONFIG(TAG, "Setting up HLW8012...");
|
|
this->sel_pin_->setup();
|
|
this->sel_pin_->digital_write(this->current_mode_);
|
|
this->cf_store_.pulse_counter_setup(this->cf_pin_);
|
|
this->cf1_store_.pulse_counter_setup(this->cf1_pin_);
|
|
}
|
|
void HLW8012Component::dump_config() {
|
|
ESP_LOGCONFIG(TAG, "HLW8012:");
|
|
LOG_PIN(" SEL Pin: ", this->sel_pin_)
|
|
LOG_PIN(" CF Pin: ", this->cf_pin_)
|
|
LOG_PIN(" CF1 Pin: ", this->cf1_pin_)
|
|
ESP_LOGCONFIG(TAG, " Change measurement mode every %u", this->change_mode_every_);
|
|
ESP_LOGCONFIG(TAG, " Current resistor: %.1f mΩ", this->current_resistor_ * 1000.0f);
|
|
ESP_LOGCONFIG(TAG, " Voltage Divider: %.1f", this->voltage_divider_);
|
|
LOG_UPDATE_INTERVAL(this)
|
|
LOG_SENSOR(" ", "Voltage", this->voltage_sensor_)
|
|
LOG_SENSOR(" ", "Current", this->current_sensor_)
|
|
LOG_SENSOR(" ", "Power", this->power_sensor_)
|
|
}
|
|
float HLW8012Component::get_setup_priority() const { return setup_priority::DATA; }
|
|
void HLW8012Component::update() {
|
|
// HLW8012 has 50% duty cycle
|
|
pulse_counter::pulse_counter_t raw_cf = this->cf_store_.read_raw_value();
|
|
pulse_counter::pulse_counter_t raw_cf1 = this->cf1_store_.read_raw_value();
|
|
float cf_hz = raw_cf / (this->get_update_interval() / 1000.0f);
|
|
if (raw_cf <= 1) {
|
|
// don't count single pulse as power
|
|
cf_hz = 0.0f;
|
|
}
|
|
float cf1_hz = raw_cf1 / (this->get_update_interval() / 1000.0f);
|
|
if (raw_cf1 <= 1) {
|
|
// don't count single pulse as anything
|
|
cf1_hz = 0.0f;
|
|
}
|
|
|
|
if (this->nth_value_++ < 2) {
|
|
return;
|
|
}
|
|
|
|
const float v_ref_squared = HLW8012_REFERENCE_VOLTAGE * HLW8012_REFERENCE_VOLTAGE;
|
|
const float power_multiplier_micros =
|
|
64000000.0f * v_ref_squared * this->voltage_divider_ / this->current_resistor_ / 24.0f / HLW8012_CLOCK_FREQUENCY;
|
|
float power = cf_hz * power_multiplier_micros / 1000000.0f;
|
|
|
|
if (this->change_mode_at_ != 0) {
|
|
// Only read cf1 after one cycle. Apparently it's quite unstable after being changed.
|
|
if (this->current_mode_) {
|
|
const float current_multiplier_micros =
|
|
512000000.0f * HLW8012_REFERENCE_VOLTAGE / this->current_resistor_ / 24.0f / HLW8012_CLOCK_FREQUENCY;
|
|
float current = cf1_hz * current_multiplier_micros / 1000000.0f;
|
|
ESP_LOGD(TAG, "Got power=%.1fW, current=%.1fA", power, current);
|
|
if (this->current_sensor_ != nullptr) {
|
|
this->current_sensor_->publish_state(current);
|
|
}
|
|
} else {
|
|
const float voltage_multiplier_micros =
|
|
256000000.0f * HLW8012_REFERENCE_VOLTAGE * this->voltage_divider_ / HLW8012_CLOCK_FREQUENCY;
|
|
float voltage = cf1_hz * voltage_multiplier_micros / 1000000.0f;
|
|
ESP_LOGD(TAG, "Got power=%.1fW, voltage=%.1fV", power, voltage);
|
|
if (this->voltage_sensor_ != nullptr) {
|
|
this->voltage_sensor_->publish_state(voltage);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (this->power_sensor_ != nullptr) {
|
|
this->power_sensor_->publish_state(power);
|
|
}
|
|
|
|
if (this->change_mode_at_++ == this->change_mode_every_) {
|
|
this->current_mode_ = !this->current_mode_;
|
|
ESP_LOGV(TAG, "Changing mode to %s mode", this->current_mode_ ? "CURRENT" : "VOLTAGE");
|
|
this->change_mode_at_ = 0;
|
|
this->sel_pin_->digital_write(this->current_mode_);
|
|
}
|
|
}
|
|
|
|
} // namespace hlw8012
|
|
} // namespace esphome
|