Initial commit

utils/SerialTransport.ts

@@ -0,0 +1,63 @@
+export class SerialTransport {
+  private port: SerialPort;
+  private reader: ReadableStreamDefaultReader<Uint8Array> | null = null;
+  private writer: WritableStreamDefaultWriter<Uint8Array> | null = null;
+
+  constructor(port: SerialPort) {
+    this.port = port;
+  }
+
+  async connect() {
+    if (this.reader || this.writer) {
+      await this.disconnect();
+    }
+    
+    const decoder = new TextDecoderStream();
+    const inputDone = this.port.readable!.pipeTo(decoder.writable);
+    const inputStream = decoder.readable;
+    
+    this.reader = inputStream.getReader();
+    this.writer = this.port.writable!.getWriter();
+  }
+
+  async disconnect() {
+    if (this.reader) {
+      await this.reader.cancel();
+      this.reader.releaseLock();
+      this.reader = null;
+    }
+    if (this.writer) {
+      await this.writer.close();
+      this.writer.releaseLock();
+      this.writer = null;
+    }
+    if (this.port.readable) {
+      await this.port.readable.cancel();
+    }
+  }
+
+  async write(data: Uint8Array) {
+    if (!this.writer) {
+      throw new Error('Transport not connected');
+    }
+    await this.writer.write(data);
+  }
+
+  async read() {
+    if (!this.reader) {
+      throw new Error('Transport not connected');
+    }
+    const { value, done } = await this.reader.read();
+    if (done) {
+      throw new Error('Serial port closed');
+    }
+    return new TextEncoder().encode(value);
+  }
+
+  get_info() {
+    return {
+      transport: 'serial',
+      baud: 115200,
+    };
+  }
+}