Phomeoのコマンドを解析しているGitのページ github.comreceiptline-master\designer\pr.jsの内容 const ESC = 0x1B;port = await navigator.serial.requestPort();await port.open({ baudRate: 115200 });writer = port.writable.getWriter();await writer.write(new Uint8Array([ESC, 0x40, 0x02])); // reset const conn = ReceiptSerial.co…