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72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
#include "integration_sensor.h"
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#include "esphome/core/helpers.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace integration {
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static const char *TAG = "integration";
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void IntegrationSensor::setup() {
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if (this->restore_) {
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this->rtc_ = global_preferences.make_preference<float>(this->get_object_id_hash());
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float preference_value = 0;
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this->rtc_.load(&preference_value);
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this->result_ = preference_value;
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}
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this->last_update_ = millis();
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this->publish_and_save_(this->result_);
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this->sensor_->add_on_state_callback([this](float state) { this->process_sensor_value_(state); });
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}
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void IntegrationSensor::dump_config() { LOG_SENSOR("", "Integration Sensor", this); }
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std::string IntegrationSensor::unit_of_measurement() {
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std::string suffix;
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switch (this->time_) {
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case INTEGRATION_SENSOR_TIME_MILLISECOND:
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suffix = "ms";
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break;
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case INTEGRATION_SENSOR_TIME_SECOND:
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suffix = "s";
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break;
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case INTEGRATION_SENSOR_TIME_MINUTE:
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suffix = "min";
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break;
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case INTEGRATION_SENSOR_TIME_HOUR:
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suffix = "h";
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break;
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case INTEGRATION_SENSOR_TIME_DAY:
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suffix = "d";
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break;
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}
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std::string base = this->sensor_->get_unit_of_measurement();
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if (str_endswith(base, "/" + suffix)) {
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return base.substr(0, base.size() - suffix.size() - 1);
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}
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return base + suffix;
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}
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void IntegrationSensor::process_sensor_value_(float value) {
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const uint32_t now = millis();
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const double old_value = this->last_value_;
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const double new_value = value;
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const uint32_t dt_ms = now - this->last_update_;
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const double dt = dt_ms * this->get_time_factor_();
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double area = 0.0f;
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switch (this->method_) {
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case INTEGRATION_METHOD_TRAPEZOID:
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area = dt * (old_value + new_value) / 2.0;
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break;
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case INTEGRATION_METHOD_LEFT:
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area = dt * old_value;
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break;
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case INTEGRATION_METHOD_RIGHT:
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area = dt * new_value;
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break;
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}
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this->last_value_ = new_value;
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this->last_update_ = now;
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this->publish_and_save_(this->result_ + area);
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}
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} // namespace integration
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} // namespace esphome
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