chore(deps-dev): Bump @eslint/js from 9.38.0 to 9.39.0

Bumps [@eslint/js](https://github.com/eslint/eslint/tree/HEAD/packages/js) from 9.38.0 to 9.39.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Commits](https://github.com/eslint/eslint/commits/v9.39.0/packages/js)

---
updated-dependencies:
- dependency-name: "@eslint/js"
  dependency-version: 9.39.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.all-contributorsrc

@@ -0,0 +1,22 @@
+{
+  "files": ["README.md"],
+  "imageSize": 100,
+  "commit": false,
+  "commitType": "docs",
+  "commitConvention": "angular",
+  "contributors": [
+    {
+      "login": "remiolivier",
+      "name": "remiolivier",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1379047?v=4",
+      "profile": "https://github.com/remiolivier",
+      "contributions": ["code"]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "skipCi": true,
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "projectName": "mysa2mqtt",
+  "projectOwner": "bourquep"
+}

.github/dependabot.yml

@@ -8,7 +8,7 @@ updates:
   - package-ecosystem: 'npm' # See documentation for possible values
     directory: '/' # Location of package manifests
     schedule:
-      interval: 'daily'
+      interval: 'weekly'
     labels:
       - 'dependencies'
     commit-message:

.prettierignore

@@ -0,0 +1 @@
+README.md

README.md

@@ -1,5 +1,11 @@
 # mysa2mqtt
 
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
+
 [![NPM Version](https://img.shields.io/npm/v/mysa2mqtt)](https://www.npmjs.com/package/mysa2mqtt)
 [![Docker Hub](https://img.shields.io/docker/pulls/bourquep/mysa2mqtt)](https://hub.docker.com/r/bourquep/mysa2mqtt)
 [![CodeQL](https://github.com/bourquep/mysa2mqtt/actions/workflows/github-code-scanning/codeql/badge.svg)](https://github.com/bourquep/mysa2mqtt/actions/workflows/github-code-scanning/codeql)
@@ -118,6 +124,11 @@ For development or custom modifications:
 The application can be configured using either command-line arguments or environment variables. Environment variables
 take precedence over command-line defaults.
 
+> [!IMPORTANT]
+> The `M2M_TEMPERATURE_UNIT` option must match Home Assistant's unit system (Settings → General → Unit System)
+> so setpoints and readings are interpreted correctly. If mismatched, climate entities will show incorrect values (e.g.
+> 21°C treated as 21°F) and commands may result in unexpected temperatures.
+
 ### Required Configuration
 
 | CLI Option            | Environment Variable | Description                      |
@@ -145,6 +156,7 @@ take precedence over command-line defaults.
 | `-l, --log-level`         | `M2M_LOG_LEVEL`         | `info`         | Log level: `silent`, `fatal`, `error`, `warn`, `info`, `debug`, `trace` |
 | `-f, --log-format`        | `M2M_LOG_FORMAT`        | `pretty`       | Log format: `pretty`, `json`                                            |
 | `-s, --mysa-session-file` | `M2M_MYSA_SESSION_FILE` | `session.json` | Path to Mysa session file                                               |
+| `-t, --temperature-unit`  | `M2M_TEMPERATURE_UNIT`  | `C`            | Temperature unit (`C` = Celsius, `F` = Fahrenheit)                      |
 
 ## Usage Examples
 
@@ -369,3 +381,26 @@ copyright notice and license text in any copy of the software or substantial por
 - [mqtt2ha](https://github.com/bourquep/mqtt2ha) - MQTT to Home Assistant bridge library
 - [Commander.js](https://github.com/tj/commander.js) - Command-line argument parsing
 - [Pino](https://github.com/pinojs/pino) - Fast JSON logger
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/remiolivier"><img src="https://avatars.githubusercontent.com/u/1379047?v=4?s=100" width="100px;" alt="remiolivier"/><br /><sub><b>remiolivier</b></sub></a><br /><a href="https://github.com/bourquep/mysa2mqtt/commits?author=remiolivier" title="Code">💻</a></td>
+    </tr>
+  </tbody>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification.
+Contributions of any kind welcome!

package.json

@@ -49,26 +49,26 @@
     "commander": "14.0.1",
     "dotenv": "17.2.3",
     "mqtt2ha": "4.1.2",
-    "mysa-js-sdk": "1.3.2",
-    "pino": "10.0.0",
-    "pino-pretty": "13.1.1"
+    "mysa-js-sdk": "2.0.0",
+    "pino": "10.1.0",
+    "pino-pretty": "13.1.2"
   },
   "devDependencies": {
     "@commander-js/extra-typings": "14.0.0",
-    "@eslint/js": "9.37.0",
-    "@semantic-release/npm": "12.0.2",
-    "@types/node": "24.6.2",
+    "@eslint/js": "9.39.0",
+    "@semantic-release/npm": "13.1.1",
+    "@types/node": "24.9.2",
     "conventional-changelog-conventionalcommits": "9.1.0",
-    "eslint": "9.37.0",
-    "eslint-plugin-jsdoc": "60.8.1",
+    "eslint": "9.39.0",
+    "eslint-plugin-jsdoc": "61.1.11",
     "eslint-plugin-tsdoc": "0.4.0",
     "prettier": "3.6.2",
-    "prettier-plugin-jsdoc": "1.3.3",
+    "prettier-plugin-jsdoc": "1.5.0",
     "prettier-plugin-organize-imports": "4.3.0",
-    "semantic-release": "24.2.9",
+    "semantic-release": "25.0.1",
     "tsup": "8.5.0",
     "tsx": "4.20.6",
     "typescript": "5.9.3",
-    "typescript-eslint": "8.45.0"
+    "typescript-eslint": "8.46.2"
   }
 }

src/main.ts

@@ -99,7 +99,8 @@ async function main() {
         mqttSettings,
         new PinoLogger(rootLogger.child({ module: 'thermostat', deviceId: device.Id })),
         firmwares.Firmware[device.Id],
-        serialNumbers.get(device.Id)
+        serialNumbers.get(device.Id),
+        options.temperatureUnit
       )
   );
 

src/options.ts

@@ -143,5 +143,12 @@ export const options = new Command('mysa2mqtt')
       .default('mysa2mqtt')
       .helpGroup('MQTT')
   )
+  .addOption(
+    new Option('--temperature-unit <temperatureUnit>', 'temperature unit (C or F)')
+      .env('M2M_TEMPERATURE_UNIT')
+      .choices(['C', 'F'])
+      .default('C')
+      .helpGroup('Configuration')
+  )
   .parse()
   .opts();

src/thermostat.ts

@@ -51,8 +51,11 @@ export class Thermostat {
     private readonly mqttSettings: MqttSettings,
     private readonly logger: Logger,
     public readonly mysaDeviceFirmware?: FirmwareDevice,
-    public readonly mysaDeviceSerialNumber?: string
+    public readonly mysaDeviceSerialNumber?: string,
+    public readonly temperatureUnit?: 'C' | 'F'
   ) {
+    const is_celsius = (temperatureUnit ?? 'C') === 'C';
+
     this.mqttDevice = {
       identifiers: mysaDevice.Id,
       name: mysaDevice.Name,
@@ -81,9 +84,9 @@ export class Thermostat {
           min_temp: mysaDevice.MinSetpoint,
           max_temp: mysaDevice.MaxSetpoint,
           modes: ['off', 'heat'], // TODO: AC
-          precision: 0.1,
-          temp_step: 0.5,
-          temperature_unit: 'C', // TODO: Confirm that Mysa always works in C
+          precision: is_celsius ? 0.1 : 1.0,
+          temp_step: is_celsius ? 0.5 : 1.0,
+          temperature_unit: 'C',
           optimistic: true
         }
       },
@@ -118,7 +121,17 @@ export class Thermostat {
             if (message === '') {
               this.mysaApiClient.setDeviceState(this.mysaDevice.Id, undefined, undefined);
             } else {
-              this.mysaApiClient.setDeviceState(this.mysaDevice.Id, parseFloat(message), undefined);
+              let temperature = parseFloat(message);
+
+              if (!is_celsius) {
+                const snapHalfC = (c: number) => Math.round(c * 2) / 2;
+                const clamp = (v: number, min: number, max: number) => Math.min(max, Math.max(min, v));
+                // Snap to 0.5 °C and clamp to device limits
+                const setC = snapHalfC(temperature);
+                temperature = clamp(setC, this.mysaDevice.MinSetpoint ?? 0, this.mysaDevice.MaxSetpoint ?? 100);
+              }
+
+              this.mysaApiClient.setDeviceState(this.mysaDevice.Id, temperature, undefined);
             }
             break;
         }
@@ -137,7 +150,7 @@ export class Thermostat {
         device_class: 'temperature',
         state_class: 'measurement',
         unit_of_measurement: '°C',
-        suggested_display_precision: 1,
+        suggested_display_precision: is_celsius ? 0.1 : 0.0,
         force_update: true
       }
     });
@@ -187,18 +200,22 @@ export class Thermostat {
     try {
       const deviceStates = await this.mysaApiClient.getDeviceStates();
       const state = deviceStates.DeviceStatesObj[this.mysaDevice.Id];
+      const tstatMode = state.TstatMode?.v;
 
-      this.mqttClimate.currentTemperature = state.CorrectedTemp.v;
-      this.mqttClimate.currentHumidity = state.Humidity.v;
-      this.mqttClimate.currentMode = state.TstatMode.v === 1 ? 'off' : state.TstatMode.v === 3 ? 'heat' : undefined;
-      this.mqttClimate.currentAction = this.computeCurrentAction(undefined, state.Duty.v);
-      this.mqttClimate.targetTemperature = this.mqttClimate.currentMode !== 'off' ? state.SetPoint.v : undefined;
+      this.mqttClimate.currentTemperature = state.CorrectedTemp?.v;
+      this.mqttClimate.currentHumidity = state.Humidity?.v;
+      this.mqttClimate.currentMode = tstatMode === 1 ? 'off' : tstatMode === 3 ? 'heat' : undefined;
+      this.mqttClimate.currentAction = this.computeCurrentAction(undefined, state.Duty?.v);
+      this.mqttClimate.targetTemperature = this.mqttClimate.currentMode !== 'off' ? state.SetPoint?.v : undefined;
       await this.mqttClimate.writeConfig();
 
-      await this.mqttTemperature.setState('state_topic', state.CorrectedTemp.v.toFixed(2));
+      await this.mqttTemperature.setState(
+        'state_topic',
+        state.CorrectedTemp != null ? state.CorrectedTemp.v.toFixed(2) : 'None'
+      );
       await this.mqttTemperature.writeConfig();
 
-      await this.mqttHumidity.setState('state_topic', state.Humidity.v.toFixed(2));
+      await this.mqttHumidity.setState('state_topic', state.Humidity != null ? state.Humidity.v.toFixed(2) : 'None');
       await this.mqttHumidity.writeConfig();
 
       // `state.Current.v` always has a non-zero value, even for thermostats that are off, so we can't use it to determine initial power state.
@@ -242,7 +259,7 @@ export class Thermostat {
     this.mqttClimate.currentHumidity = status.humidity;
     this.mqttClimate.targetTemperature = this.mqttClimate.currentMode !== 'off' ? status.setPoint : undefined;
 
-    if (status.current != null) {
+    if (this.mysaDevice.Voltage != null && status.current != null) {
       const watts = this.mysaDevice.Voltage * status.current;
       await this.mqttPower.setState('state_topic', watts.toFixed(2));
     } else {