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64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
#include "htu21d.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace htu21d {
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static const char *const TAG = "htu21d";
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static const uint8_t HTU21D_ADDRESS = 0x40;
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static const uint8_t HTU21D_REGISTER_RESET = 0xFE;
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static const uint8_t HTU21D_REGISTER_TEMPERATURE = 0xE3;
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static const uint8_t HTU21D_REGISTER_HUMIDITY = 0xE5;
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static const uint8_t HTU21D_REGISTER_STATUS = 0xE7;
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void HTU21DComponent::setup() {
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ESP_LOGCONFIG(TAG, "Setting up HTU21D...");
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if (!this->write_bytes(HTU21D_REGISTER_RESET, nullptr, 0)) {
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this->mark_failed();
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return;
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}
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// Wait for software reset to complete
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delay(15);
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}
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void HTU21DComponent::dump_config() {
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ESP_LOGCONFIG(TAG, "HTU21D:");
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LOG_I2C_DEVICE(this);
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with HTU21D failed!");
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}
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "Temperature", this->temperature_);
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LOG_SENSOR(" ", "Humidity", this->humidity_);
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}
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void HTU21DComponent::update() {
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uint16_t raw_temperature;
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if (!this->read_byte_16(HTU21D_REGISTER_TEMPERATURE, &raw_temperature, 50)) {
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this->status_set_warning();
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return;
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}
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float temperature = (float(raw_temperature & 0xFFFC)) * 175.72f / 65536.0f - 46.85f;
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uint16_t raw_humidity;
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if (!this->read_byte_16(HTU21D_REGISTER_HUMIDITY, &raw_humidity, 50)) {
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this->status_set_warning();
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return;
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}
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float humidity = (float(raw_humidity & 0xFFFC)) * 125.0f / 65536.0f - 6.0f;
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ESP_LOGD(TAG, "Got Temperature=%.1f°C Humidity=%.1f%%", temperature, humidity);
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if (this->temperature_ != nullptr)
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this->temperature_->publish_state(temperature);
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if (this->humidity_ != nullptr)
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this->humidity_->publish_state(humidity);
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this->status_clear_warning();
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}
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float HTU21DComponent::get_setup_priority() const { return setup_priority::DATA; }
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} // namespace htu21d
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} // namespace esphome
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