135 lines
4 KiB
C++
135 lines
4 KiB
C++
#include "mics_4514.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 mics_4514 {
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static const char *const TAG = "mics_4514";
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static const uint8_t SENSOR_REGISTER = 0x04;
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static const uint8_t POWER_MODE_REGISTER = 0x0a;
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void MICS4514Component::setup() {
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ESP_LOGCONFIG(TAG, "Running setup");
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uint8_t power_mode;
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this->read_register(POWER_MODE_REGISTER, &power_mode, 1);
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if (power_mode == 0x00) {
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ESP_LOGCONFIG(TAG, "Waking up MICS 4514, sensors will have data after 3 minutes");
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power_mode = 0x01;
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this->write_register(POWER_MODE_REGISTER, &power_mode, 1);
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delay(100); // NOLINT
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this->set_timeout("warmup", 3 * 60 * 1000, [this]() {
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this->warmed_up_ = true;
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ESP_LOGCONFIG(TAG, "MICS 4514 setup complete.");
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});
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this->status_set_warning();
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return;
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}
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ESP_LOGCONFIG(TAG, "Device already awake.");
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this->warmed_up_ = true;
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ESP_LOGCONFIG(TAG, "MICS 4514 setup complete.");
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}
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void MICS4514Component::dump_config() {
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ESP_LOGCONFIG(TAG, "MICS 4514:");
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LOG_I2C_DEVICE(this);
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "Nitrogen Dioxide", this->nitrogen_dioxide_sensor_);
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LOG_SENSOR(" ", "Carbon Monoxide", this->carbon_monoxide_sensor_);
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LOG_SENSOR(" ", "Methane", this->methane_sensor_);
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LOG_SENSOR(" ", "Ethanol", this->ethanol_sensor_);
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LOG_SENSOR(" ", "Hydrogen", this->hydrogen_sensor_);
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LOG_SENSOR(" ", "Ammonia", this->ammonia_sensor_);
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}
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float MICS4514Component::get_setup_priority() const { return setup_priority::DATA; }
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void MICS4514Component::update() {
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if (!this->warmed_up_) {
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return;
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}
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uint8_t data[6];
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if (this->read_register(SENSOR_REGISTER, data, 6) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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this->status_clear_warning();
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ESP_LOGV(TAG, "Got data: %02X %02X %02X %02X %02X %02X", data[0], data[1], data[2], data[3], data[4], data[5]);
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uint16_t ox = encode_uint16(data[0], data[1]);
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uint16_t red = encode_uint16(data[2], data[3]);
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uint16_t power = encode_uint16(data[4], data[5]);
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if (this->initial_) {
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this->initial_ = false;
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this->ox_calibration_ = (float) (power - ox);
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this->red_calibration_ = (float) (power - red);
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return;
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}
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float red_f = (float) (power - red) / this->red_calibration_;
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float ox_f = (float) (power - ox) / this->ox_calibration_;
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if (this->carbon_monoxide_sensor_ != nullptr) {
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float co = 0.0f;
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if (red_f > 3.4f) {
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co = 0.0;
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} else if (red_f < 0.01) {
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co = 1000.0;
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} else {
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co = 4.2 / pow(red_f, 1.2);
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}
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this->carbon_monoxide_sensor_->publish_state(co);
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}
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if (this->nitrogen_dioxide_sensor_ != nullptr) {
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float nitrogendioxide = 0.0f;
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if (ox_f < 0.3f) {
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nitrogendioxide = 0.0;
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} else {
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nitrogendioxide = 0.164 * pow(ox_f, 0.975);
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}
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this->nitrogen_dioxide_sensor_->publish_state(nitrogendioxide);
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}
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if (this->methane_sensor_ != nullptr) {
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float methane = 0.0f;
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if (red_f > 0.9f || red_f < 0.5) { // outside the range->unlikely
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methane = 0.0;
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} else {
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methane = 630 / pow(red_f, 4.4);
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}
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this->methane_sensor_->publish_state(methane);
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}
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if (this->ethanol_sensor_ != nullptr) {
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float ethanol = 0.0f;
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if (red_f > 1.0f || red_f < 0.02) { // outside the range->unlikely
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ethanol = 0.0;
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} else {
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ethanol = 1.52 / pow(red_f, 1.55);
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}
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this->ethanol_sensor_->publish_state(ethanol);
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}
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if (this->hydrogen_sensor_ != nullptr) {
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float hydrogen = 0.0f;
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if (red_f > 0.9f || red_f < 0.02) { // outside the range->unlikely
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hydrogen = 0.0;
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} else {
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hydrogen = 0.85 / pow(red_f, 1.75);
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}
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this->hydrogen_sensor_->publish_state(hydrogen);
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}
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if (this->ammonia_sensor_ != nullptr) {
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float ammonia = 0.0f;
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if (red_f > 0.98f || red_f < 0.2532) { // outside the ammonia range->unlikely
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ammonia = 0.0;
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} else {
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ammonia = 0.9 / pow(red_f, 4.6);
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}
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this->ammonia_sensor_->publish_state(ammonia);
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}
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}
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} // namespace mics_4514
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} // namespace esphome
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