Add Air Quality Sensor support (pm25).

CHANGELOG.md

@@ -33,6 +33,7 @@
 - [TemperatureSensor/HumiditySensor] Add Temperature and Humidity Sensor support (`wsdcg`).
 - [LightSensor] Add Light Sensor support (`ldcg`).
 - [MotionSensor] Add Motion Sensor support (`pir`).
+- [AirQualitySensor] Add PM2.5 Detector support (`pm25`).
 
 ### Known issue
 - `LightAccessory` may not work properly, espasially on work mode change. need more test and feedbacks.

SUPPORTED_DEVICES.md

@@ -116,7 +116,7 @@ Most category code is pinyin abbreviation of Chinese name.
 | Luminance Sensor | 亮度传感器 | ldcg | Light Sensor | ✅ |
 | Pressure Sensor | 压力传感器 | ylcg | | |
 | Emergency Button | 紧急按钮 | sos | | |
-| PM2.5 Detector | PM2.5传感器 | pm25 | | |
+| PM2.5 Detector | PM2.5传感器 | pm25 | Air Quality Sensor | ✅ |
 | CO Detector | CO报警传感器 | cobj | Carbon Monoxide Sensor | ✅ |
 | CO2 Detector | CO2报警传感器 | co2bj | Carbon Dioxide Sensor | ✅ |
 | Multi-functional Sensor | 多功能传感器 | dgnbj | | |

src/accessory/AccessoryFactory.ts

@@ -14,6 +14,7 @@ import SmokeSensorAccessory from './SmokeSensorAccessory';
 import TemperatureHumiditySensorAccessory from './TemperatureHumiditySensorAccessory';
 import LightSensorAccessory from './LightSensorAccessory';
 import MotionSensorAccessory from './MotionSensorAccessory';
+import AirQualitySensorAccessory from './AirQualitySensorAccessory';
 
 import LegacyAccessoryFactory from './LegacyAccessoryFactory';
 
@@ -85,6 +86,9 @@ export default class AccessoryFactory {
       case 'pir':
         handler = new MotionSensorAccessory(platform, accessory);
         break;
+      case 'pm25':
+        handler = new AirQualitySensorAccessory(platform, accessory);
+        break;
     }
 
     if (!handler) {

src/accessory/AirQualitySensorAccessory.ts

@@ -0,0 +1,55 @@
+import { PlatformAccessory } from 'homebridge';
+import { TuyaPlatform } from '../platform';
+import BaseAccessory from './BaseAccessory';
+
+export default class AirQualitySensorAccessory extends BaseAccessory {
+
+  constructor(platform: TuyaPlatform, accessory: PlatformAccessory) {
+    super(platform, accessory);
+
+    const service = this.accessory.getService(this.Service.AirQualitySensor)
+      || this.accessory.addService(this.Service.AirQualitySensor);
+
+    service.getCharacteristic(this.Characteristic.AirQuality)
+      .onGet(() => {
+        const status = this.device.getDeviceStatus('pm25_value');
+        if (status) {
+          let pm25 = Math.max(0, status?.value as number);
+          pm25 = Math.min(1000, pm25);
+          if (pm25 <= 50) {
+            return this.Characteristic.AirQuality.GOOD;
+          } else if (pm25 <= 100) {
+            return this.Characteristic.AirQuality.FAIR;
+          } else if (pm25 <= 200) {
+            return this.Characteristic.AirQuality.INFERIOR;
+          } else {
+            return this.Characteristic.AirQuality.POOR;
+          }
+        }
+
+        return this.Characteristic.AirQuality.UNKNOWN;
+      });
+
+    if (this.device.getDeviceStatus('pm25_value')) {
+      service.getCharacteristic(this.Characteristic.PM2_5Density)
+        .onGet(() => {
+          const status = this.device.getDeviceStatus('pm25_value');
+          let pm25 = Math.max(0, status?.value as number);
+          pm25 = Math.min(1000, pm25);
+          return pm25;
+        });
+    }
+
+    if (this.device.getDeviceStatus('pm10')) {
+      service.getCharacteristic(this.Characteristic.PM10Density)
+        .onGet(() => {
+          const status = this.device.getDeviceStatus('pm10');
+          let pm25 = Math.max(0, status?.value as number);
+          pm25 = Math.min(1000, pm25);
+          return pm25;
+        });
+    }
+
+  }
+
+}