X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/c830fcb0e1d42c1300ebe78a8b33924054b63a87..09575f9607e12ddf7284f6c8974a332a88d4ed3b:/Demos/Host/ClassDriver/CDCHost/CDCHost.c

diff --git a/Demos/Host/ClassDriver/CDCHost/CDCHost.c b/Demos/Host/ClassDriver/CDCHost/CDCHost.c
index cf0a9f3ae..4f67f3fbe 100644
--- a/Demos/Host/ClassDriver/CDCHost/CDCHost.c
+++ b/Demos/Host/ClassDriver/CDCHost/CDCHost.c
@@ -72,9 +72,8 @@ int main(void)
 				uint16_t ConfigDescriptorSize;
 				uint8_t  ConfigDescriptorData[512];
 
-				if ((USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful) ||
-				    (ConfigDescriptorSize > sizeof(ConfigDescriptorData)) ||
-					(USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData)))
+				if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
+				                                  sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
 				{
 					printf("Error Retrieving Configuration Descriptor.\r\n");
 					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
@@ -103,6 +102,13 @@ int main(void)
 				USB_HostState = HOST_STATE_Configured;
 				break;
 			case HOST_STATE_Configured:
+				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));
+				}
+			
 				break;
 		}