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Add support for EE895 (#3771)
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6 changed files with 228 additions and 0 deletions
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@ -71,6 +71,7 @@ esphome/components/display_menu_base/* @numo68
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esphome/components/dps310/* @kbx81
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esphome/components/ds1307/* @badbadc0ffee
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esphome/components/dsmr/* @glmnet @zuidwijk
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esphome/components/ee895/* @Stock-M
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esphome/components/ektf2232/* @jesserockz
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esphome/components/ens210/* @itn3rd77
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esphome/components/esp32/* @esphome/core
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0
esphome/components/ee895/__init__.py
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0
esphome/components/ee895/__init__.py
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115
esphome/components/ee895/ee895.cpp
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115
esphome/components/ee895/ee895.cpp
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@ -0,0 +1,115 @@
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#include "ee895.h"
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#include "esphome/core/log.h"
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#include "esphome/core/helpers.h"
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namespace esphome {
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namespace ee895 {
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static const char *const TAG = "ee895";
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static const uint16_t CRC16_ONEWIRE_START = 0xFFFF;
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static const uint8_t FUNCTION_CODE_READ = 0x03;
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static const uint16_t SERIAL_NUMBER = 0x0000;
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static const uint16_t TEMPERATURE_ADDRESS = 0x03EA;
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static const uint16_t CO2_ADDRESS = 0x0424;
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static const uint16_t PRESSURE_ADDRESS = 0x04B0;
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void EE895Component::setup() {
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uint16_t crc16_check = 0;
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ESP_LOGCONFIG(TAG, "Setting up EE895...");
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write_command_(SERIAL_NUMBER, 8);
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uint8_t serial_number[20];
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this->read(serial_number, 20);
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crc16_check = (serial_number[19] << 8) + serial_number[18];
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if (crc16_check != calc_crc16_(serial_number, 19)) {
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this->error_code_ = CRC_CHECK_FAILED;
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this->mark_failed();
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return;
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}
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ESP_LOGV(TAG, " Serial Number: 0x%s", format_hex(serial_number + 2, 16).c_str());
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}
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void EE895Component::dump_config() {
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ESP_LOGCONFIG(TAG, "EE895:");
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LOG_I2C_DEVICE(this);
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switch (this->error_code_) {
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case COMMUNICATION_FAILED:
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ESP_LOGE(TAG, "Communication with EE895 failed!");
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break;
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case CRC_CHECK_FAILED:
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ESP_LOGE(TAG, "The crc check failed");
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break;
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case NONE:
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default:
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break;
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}
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
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LOG_SENSOR(" ", "CO2", this->co2_sensor_);
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LOG_SENSOR(" ", "Pressure", this->pressure_sensor_);
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}
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float EE895Component::get_setup_priority() const { return setup_priority::DATA; }
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void EE895Component::update() {
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write_command_(TEMPERATURE_ADDRESS, 2);
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this->set_timeout(50, [this]() {
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float temperature = read_float_();
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write_command_(CO2_ADDRESS, 2);
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float co2 = read_float_();
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write_command_(PRESSURE_ADDRESS, 2);
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float pressure = read_float_();
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ESP_LOGD(TAG, "Got temperature=%.1f°C co2=%.0fppm pressure=%.1f%mbar", temperature, co2, pressure);
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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->co2_sensor_ != nullptr)
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this->co2_sensor_->publish_state(co2);
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if (this->pressure_sensor_ != nullptr)
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this->pressure_sensor_->publish_state(pressure);
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this->status_clear_warning();
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});
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}
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void EE895Component::write_command_(uint16_t addr, uint16_t reg_cnt) {
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uint8_t address[7];
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uint16_t crc16 = 0;
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address[0] = FUNCTION_CODE_READ;
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address[1] = (addr >> 8) & 0xFF;
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address[2] = addr & 0xFF;
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address[3] = (reg_cnt >> 8) & 0xFF;
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address[4] = reg_cnt & 0xFF;
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crc16 = calc_crc16_(address, 6);
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address[5] = crc16 & 0xFF;
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address[6] = (crc16 >> 8) & 0xFF;
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this->write(address, 7, true);
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}
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float EE895Component::read_float_() {
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uint16_t crc16_check = 0;
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uint8_t i2c_response[8];
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this->read(i2c_response, 8);
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crc16_check = (i2c_response[7] << 8) + i2c_response[6];
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if (crc16_check != calc_crc16_(i2c_response, 7)) {
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this->error_code_ = CRC_CHECK_FAILED;
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this->status_set_warning();
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return 0;
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}
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uint32_t x = encode_uint32(i2c_response[4], i2c_response[5], i2c_response[2], i2c_response[3]);
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float value;
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memcpy(&value, &x, sizeof(value)); // convert uin32_t IEEE-754 format to float
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return value;
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}
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uint16_t EE895Component::calc_crc16_(const uint8_t buf[], uint8_t len) {
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uint8_t crc_check_buf[22];
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for (int i = 0; i < len; i++) {
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crc_check_buf[i + 1] = buf[i];
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}
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crc_check_buf[0] = this->address_;
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return crc16(crc_check_buf, len);
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}
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} // namespace ee895
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} // namespace esphome
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34
esphome/components/ee895/ee895.h
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34
esphome/components/ee895/ee895.h
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@ -0,0 +1,34 @@
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#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/sensor/sensor.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace ee895 {
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/// This class implements support for the ee895 of temperature i2c sensors.
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class EE895Component : public PollingComponent, public i2c::I2CDevice {
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public:
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void set_co2_sensor(sensor::Sensor *co2) { co2_sensor_ = co2; }
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void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
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void set_pressure_sensor(sensor::Sensor *pressure_sensor) { pressure_sensor_ = pressure_sensor; }
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float get_setup_priority() const override;
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void setup() override;
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void dump_config() override;
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void update() override;
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protected:
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void write_command_(uint16_t addr, uint16_t reg_cnt);
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float read_float_();
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uint16_t calc_crc16_(const uint8_t buf[], uint8_t len);
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sensor::Sensor *co2_sensor_;
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sensor::Sensor *temperature_sensor_;
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sensor::Sensor *pressure_sensor_;
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enum ErrorCode { NONE = 0, COMMUNICATION_FAILED, CRC_CHECK_FAILED } error_code_{NONE};
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};
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} // namespace ee895
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} // namespace esphome
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69
esphome/components/ee895/sensor.py
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69
esphome/components/ee895/sensor.py
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import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome.components import i2c, sensor
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from esphome.const import (
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CONF_ID,
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CONF_PRESSURE,
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CONF_TEMPERATURE,
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CONF_CO2,
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DEVICE_CLASS_TEMPERATURE,
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DEVICE_CLASS_PRESSURE,
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STATE_CLASS_MEASUREMENT,
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UNIT_HECTOPASCAL,
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UNIT_CELSIUS,
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ICON_MOLECULE_CO2,
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UNIT_PARTS_PER_MILLION,
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)
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CODEOWNERS = ["@Stock-M"]
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DEPENDENCIES = ["i2c"]
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ee895_ns = cg.esphome_ns.namespace("ee895")
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EE895Component = ee895_ns.class_("EE895Component", cg.PollingComponent, i2c.I2CDevice)
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CONFIG_SCHEMA = (
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cv.Schema(
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{
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cv.GenerateID(): cv.declare_id(EE895Component),
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cv.Required(CONF_TEMPERATURE): sensor.sensor_schema(
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unit_of_measurement=UNIT_CELSIUS,
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accuracy_decimals=1,
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device_class=DEVICE_CLASS_TEMPERATURE,
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state_class=STATE_CLASS_MEASUREMENT,
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),
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cv.Required(CONF_CO2): sensor.sensor_schema(
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unit_of_measurement=UNIT_PARTS_PER_MILLION,
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icon=ICON_MOLECULE_CO2,
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accuracy_decimals=0,
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state_class=STATE_CLASS_MEASUREMENT,
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),
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cv.Required(CONF_PRESSURE): sensor.sensor_schema(
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unit_of_measurement=UNIT_HECTOPASCAL,
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accuracy_decimals=1,
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device_class=DEVICE_CLASS_PRESSURE,
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state_class=STATE_CLASS_MEASUREMENT,
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),
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}
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)
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.extend(cv.polling_component_schema("60s"))
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.extend(i2c.i2c_device_schema(0x5F))
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)
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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await cg.register_component(var, config)
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await i2c.register_i2c_device(var, config)
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if CONF_TEMPERATURE in config:
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sens = await sensor.new_sensor(config[CONF_TEMPERATURE])
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cg.add(var.set_temperature_sensor(sens))
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if CONF_CO2 in config:
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sens = await sensor.new_sensor(config[CONF_CO2])
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cg.add(var.set_co2_sensor(sens))
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if CONF_PRESSURE in config:
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sens = await sensor.new_sensor(config[CONF_PRESSURE])
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cg.add(var.set_pressure_sensor(sens))
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@ -568,6 +568,15 @@ sensor:
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- platform: duty_cycle
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pin: GPIO25
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name: Duty Cycle Sensor
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- platform: ee895
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co2:
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name: Office CO2 1
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temperature:
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name: Office Temperature 1
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pressure:
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name: Office Pressure 1
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address: 0x5F
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i2c_id: i2c_bus
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- platform: esp32_hall
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name: ESP32 Hall Sensor
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update_interval: 15s
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