add an online flag

src/RotClient.ts

@@ -65,7 +65,13 @@ export default class RotClient {
 			{ key: 'status',  url: 'readStat', numType: NumType.Int   },
 		];
 
-		const data = await this.readEndpoints(endpoints) as unknown as DynamicData;
+		const raw = await this.readEndpoints(endpoints);
+		const data: DynamicData = {
+			adc: raw.adc as number | null,
+			azimuth: raw.azimuth as number | null,
+			status: raw.status as number | null,
+			online: raw.azimuth !== null,
+		};
 
 		if (this.dynamicData !== null) {
 			const oldData = this.dynamicData;

src/types.ts

@@ -19,6 +19,7 @@ export interface DynamicData {
 	adc: number | null;
 	azimuth: number | null;
 	status: number | null;
+	online: boolean;
 }
 
 export interface InitData {