Cache the USB_DeviceState variable internally in the library core when multiple check...

[pub/USBasp.git] / Demos / Host / ClassDriver / VirtualSerialHost / VirtualSerialHost.c

diff --git a/Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.c b/Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.c
index 543e098..c486942 100644 (file)
--- a/Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.c
+++ b/Demos/Host/ClassDriver/VirtualSerialHost/VirtualSerialHost.c
@@ -111,10 +111,9 @@ int main(void)
                                if (CDC_Host_BytesReceived(&VirtualSerial_CDC_Interface))
                                {
                                        /* Echo received bytes from the attached device through the USART */
-                                       while (CDC_Host_BytesReceived(&VirtualSerial_CDC_Interface))
-                                         putchar(CDC_Host_ReceiveByte(&VirtualSerial_CDC_Interface));
-                                         
-                                       CDC_Host_Flush(&VirtualSerial_CDC_Interface);  
+                                       int16_t ReceivedByte = CDC_Host_ReceiveByte(&VirtualSerial_CDC_Interface);
+                                       if (!(ReceivedByte < 0))
+                                         putchar(ReceivedByte);
                                }
                        
                                break;