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Adding DFRobot Ozone Sensor Support (sen0321) (#4782)
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@ -246,6 +246,7 @@ esphome/components/sdm_meter/* @jesserockz @polyfaces
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esphome/components/sdp3x/* @Azimath
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esphome/components/selec_meter/* @sourabhjaiswal
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esphome/components/select/* @esphome/core
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esphome/components/sen0321/* @notjj
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esphome/components/sen21231/* @shreyaskarnik
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esphome/components/sen5x/* @martgras
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esphome/components/sensirion_common/* @martgras
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1
esphome/components/sen0321/__init__.py
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1
esphome/components/sen0321/__init__.py
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@ -0,0 +1 @@
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CODEOWNERS = ["@notjj"]
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36
esphome/components/sen0321/sen0321.cpp
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36
esphome/components/sen0321/sen0321.cpp
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#include "sen0321.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 sen0321_sensor {
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static const char *const TAG = "sen0321_sensor.sensor";
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void Sen0321Sensor::setup() {
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ESP_LOGCONFIG(TAG, "Setting up sen0321...");
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if (!this->write_byte(SENSOR_MODE_REGISTER, SENSOR_MODE_AUTO)) {
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ESP_LOGW(TAG, "Error setting measurement mode.");
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this->mark_failed();
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};
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}
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void Sen0321Sensor::update() { this->read_data_(); }
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void Sen0321Sensor::dump_config() {
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ESP_LOGCONFIG(TAG, "DF Robot Ozone Sensor sen0321:");
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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 sen0321 failed!");
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}
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LOG_UPDATE_INTERVAL(this);
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}
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void Sen0321Sensor::read_data_() {
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uint8_t result[2];
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this->read_bytes(SENSOR_AUTO_READ_REG, result, (uint8_t) 2);
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this->publish_state(((uint16_t) (result[0] << 8) + result[1]));
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}
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} // namespace sen0321_sensor
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} // namespace esphome
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35
esphome/components/sen0321/sen0321.h
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35
esphome/components/sen0321/sen0321.h
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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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// ref:
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// https://github.com/DFRobot/DFRobot_OzoneSensor
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namespace esphome {
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namespace sen0321_sensor {
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// Sensor Mode
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// While passive is supposedly supported, it does not appear to work reliably.
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static const uint8_t SENSOR_MODE_REGISTER = 0x03;
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static const uint8_t SENSOR_MODE_AUTO = 0x00;
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static const uint8_t SENSOR_MODE_PASSIVE = 0x01;
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static const uint8_t SET_REGISTER = 0x04;
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// Each register is 2 wide, so 0x07-0x08 for passive, or 0x09-0x0A for auto
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// First register is high bits, next low.
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static const uint8_t SENSOR_PASS_READ_REG = 0x07;
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static const uint8_t SENSOR_AUTO_READ_REG = 0x09;
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class Sen0321Sensor : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
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public:
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void update() override;
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void dump_config() override;
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void setup() override;
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protected:
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void read_data_();
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};
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} // namespace sen0321_sensor
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} // namespace esphome
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34
esphome/components/sen0321/sensor.py
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esphome/components/sen0321/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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ICON_CHEMICAL_WEAPON,
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UNIT_PARTS_PER_BILLION,
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STATE_CLASS_MEASUREMENT,
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)
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CODEOWNERS = ["@notjj"]
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DEPENDENCIES = ["i2c"]
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sen0321_sensor_ns = cg.esphome_ns.namespace("sen0321_sensor")
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Sen0321Sensor = sen0321_sensor_ns.class_(
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"Sen0321Sensor", cg.PollingComponent, i2c.I2CDevice
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)
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CONFIG_SCHEMA = (
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sensor.sensor_schema(
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Sen0321Sensor,
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unit_of_measurement=UNIT_PARTS_PER_BILLION,
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icon=ICON_CHEMICAL_WEAPON,
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accuracy_decimals=1,
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state_class=STATE_CLASS_MEASUREMENT,
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)
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.extend(cv.polling_component_schema("60s"))
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.extend(i2c.i2c_device_schema(0x73))
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)
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async def to_code(config):
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var = await sensor.new_sensor(config)
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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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@ -1081,6 +1081,11 @@ sensor:
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ambient_pressure_compensation: 961mBar
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temperature_offset: 4.2C
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i2c_id: i2c_bus
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- platform: sen0321
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name: Workshop Ozone Sensor
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id: sen0321_ozone
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update_interval: 10s
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i2c_id: i2c_bus
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- platform: sgp30
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eco2:
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name: Workshop eCO2
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