mirror of https://github.com/esphome/esphome.git
108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
#include "sht3xd.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace sht3xd {
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static const char *const TAG = "sht3xd";
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// https://sensirion.com/media/documents/E5762713/63D103C2/Sensirion_electronic_identification_code_SHT3x.pdf
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// indicates two possible read serial number registers either with clock stretching enabled or disabled.
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// Other SHT3XD_COMMAND registers use the clock stretching disabled register.
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// To ensure compatibility, reading serial number using the register with clock stretching register enabled
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// (used originally in this component) is tried first and if that fails the alternate register address
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// with clock stretching disabled is read.
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static const uint16_t SHT3XD_COMMAND_READ_SERIAL_NUMBER_CLOCK_STRETCHING = 0x3780;
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static const uint16_t SHT3XD_COMMAND_READ_SERIAL_NUMBER = 0x3682;
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static const uint16_t SHT3XD_COMMAND_READ_STATUS = 0xF32D;
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static const uint16_t SHT3XD_COMMAND_CLEAR_STATUS = 0x3041;
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static const uint16_t SHT3XD_COMMAND_HEATER_ENABLE = 0x306D;
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static const uint16_t SHT3XD_COMMAND_HEATER_DISABLE = 0x3066;
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static const uint16_t SHT3XD_COMMAND_SOFT_RESET = 0x30A2;
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static const uint16_t SHT3XD_COMMAND_POLLING_H = 0x2400;
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static const uint16_t SHT3XD_COMMAND_FETCH_DATA = 0xE000;
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void SHT3XDComponent::setup() {
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ESP_LOGCONFIG(TAG, "Setting up SHT3xD...");
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uint16_t raw_serial_number[2];
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if (!this->get_register(SHT3XD_COMMAND_READ_SERIAL_NUMBER_CLOCK_STRETCHING, raw_serial_number, 2)) {
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this->error_code_ = READ_SERIAL_STRETCHED_FAILED;
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if (!this->get_register(SHT3XD_COMMAND_READ_SERIAL_NUMBER, raw_serial_number, 2)) {
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this->error_code_ = READ_SERIAL_FAILED;
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this->mark_failed();
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return;
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}
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}
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this->serial_number_ = (uint32_t(raw_serial_number[0]) << 16) | uint32_t(raw_serial_number[1]);
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if (!this->write_command(heater_enabled_ ? SHT3XD_COMMAND_HEATER_ENABLE : SHT3XD_COMMAND_HEATER_DISABLE)) {
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this->error_code_ = WRITE_HEATER_MODE_FAILED;
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this->mark_failed();
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return;
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}
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}
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void SHT3XDComponent::dump_config() {
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ESP_LOGCONFIG(TAG, "SHT3xD:");
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switch (this->error_code_) {
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case READ_SERIAL_FAILED:
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ESP_LOGD(TAG, " Error reading serial number");
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break;
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case WRITE_HEATER_MODE_FAILED:
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ESP_LOGD(TAG, " Error writing heater mode");
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break;
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default:
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break;
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}
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if (this->is_failed()) {
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ESP_LOGE(TAG, " Communication with SHT3xD failed!");
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return;
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}
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ESP_LOGD(TAG, " Setup successful");
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ESP_LOGD(TAG, " Serial Number: 0x%08" PRIX32, this->serial_number_);
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ESP_LOGD(TAG, " Heater Enabled: %s", this->heater_enabled_ ? "true" : "false");
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LOG_I2C_DEVICE(this);
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
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LOG_SENSOR(" ", "Humidity", this->humidity_sensor_);
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}
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float SHT3XDComponent::get_setup_priority() const { return setup_priority::DATA; }
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void SHT3XDComponent::update() {
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if (this->status_has_warning()) {
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ESP_LOGD(TAG, "Retrying to reconnect the sensor.");
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this->write_command(SHT3XD_COMMAND_SOFT_RESET);
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}
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if (!this->write_command(SHT3XD_COMMAND_POLLING_H)) {
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this->status_set_warning();
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return;
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}
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this->set_timeout(50, [this]() {
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uint16_t raw_data[2];
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if (!this->read_data(raw_data, 2)) {
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this->status_set_warning();
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return;
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}
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float temperature = 175.0f * float(raw_data[0]) / 65535.0f - 45.0f;
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float humidity = 100.0f * float(raw_data[1]) / 65535.0f;
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ESP_LOGD(TAG, "Got temperature=%.2f°C humidity=%.2f%%", temperature, humidity);
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if (this->temperature_sensor_ != nullptr)
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this->temperature_sensor_->publish_state(temperature);
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if (this->humidity_sensor_ != nullptr)
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this->humidity_sensor_->publish_state(humidity);
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this->status_clear_warning();
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});
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}
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} // namespace sht3xd
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} // namespace esphome
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