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https://github.com/esphome/esphome.git
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75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
#include "hdc1080.h"
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#include "esphome/core/log.h"
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#include "esphome/core/hal.h"
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namespace esphome {
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namespace hdc1080 {
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static const char *const TAG = "hdc1080";
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static const uint8_t HDC1080_ADDRESS = 0x40; // 0b1000000 from datasheet
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static const uint8_t HDC1080_CMD_CONFIGURATION = 0x02;
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static const uint8_t HDC1080_CMD_TEMPERATURE = 0x00;
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static const uint8_t HDC1080_CMD_HUMIDITY = 0x01;
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void HDC1080Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up HDC1080...");
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const uint8_t data[2] = {
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0b00000000, // resolution 14bit for both humidity and temperature
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0b00000000 // reserved
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};
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if (!this->write_bytes(HDC1080_CMD_CONFIGURATION, data, 2)) {
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// as instruction is same as powerup defaults (for now), interpret as warning if this fails
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ESP_LOGW(TAG, "HDC1080 initial config instruction error");
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this->status_set_warning();
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return;
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}
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}
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void HDC1080Component::dump_config() {
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ESP_LOGCONFIG(TAG, "HDC1080:");
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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 HDC1080 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 HDC1080Component::update() {
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uint16_t raw_temp;
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if (this->write(&HDC1080_CMD_TEMPERATURE, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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delay(20);
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if (this->read(reinterpret_cast<uint8_t *>(&raw_temp), 2) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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raw_temp = i2c::i2ctohs(raw_temp);
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float temp = raw_temp * 0.0025177f - 40.0f; // raw * 2^-16 * 165 - 40
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this->temperature_->publish_state(temp);
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uint16_t raw_humidity;
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if (this->write(&HDC1080_CMD_HUMIDITY, 1) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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delay(20);
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if (this->read(reinterpret_cast<uint8_t *>(&raw_humidity), 2) != i2c::ERROR_OK) {
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this->status_set_warning();
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return;
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}
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raw_humidity = i2c::i2ctohs(raw_humidity);
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float humidity = raw_humidity * 0.001525879f; // raw * 2^-16 * 100
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this->humidity_->publish_state(humidity);
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ESP_LOGD(TAG, "Got temperature=%.1f°C humidity=%.1f%%", temp, humidity);
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this->status_clear_warning();
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}
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float HDC1080Component::get_setup_priority() const { return setup_priority::DATA; }
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} // namespace hdc1080
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} // namespace esphome
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