+ if (CDC_Host_BytesReceived(&VirtualSerial_CDC_Interface))\r
+ {\r
+ /* Echo received bytes from the attached device through the USART */\r
+ while (CDC_Host_BytesReceived(&VirtualSerial_CDC_Interface))\r
+ putchar(CDC_Host_ReceiveByte(&VirtualSerial_CDC_Interface));\r
+ }\r
+ \r