X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/97143bf81480d3f642e33684349c601d5cd0b1ae..ad4308b1d123c36df674f553bb0c43f23cd7a99a:/LUFA/Drivers/USB/Class/Host/CDC.c?ds=inline

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index cf344beae..b9e4c9ebf 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -205,7 +205,6 @@ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 	  return;
 	
 	Pipe_SelectPipe(CDCInterfaceInfo->Config.NotificationPipeNumber);
-	Pipe_SetPipeToken(PIPE_TOKEN_IN);
 	Pipe_Unfreeze();
 
 	if (Pipe_IsINReceived())
@@ -220,14 +219,19 @@ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 			                    sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
 			                    NO_STREAM_CALLBACK);
 			
-		}
-
-		Pipe_ClearIN();
+			Pipe_ClearIN();
 
-		EVENT_CDC_Host_ControLineStateChanged(CDCInterfaceInfo);
+			EVENT_CDC_Host_ControLineStateChanged(CDCInterfaceInfo);
+		}
+		else
+		{
+			Pipe_ClearIN();
+		}
 	}
 	
 	Pipe_Freeze();
+
+	CDC_Host_Flush(CDCInterfaceInfo);
 }
 
 uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
@@ -280,7 +284,7 @@ uint8_t CDC_Host_SendBreak(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
 }
 
 uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
-                            char* const Data,
+                            const char* const Data,
                             const uint16_t Length)
 {
 	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
@@ -328,7 +332,6 @@ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo
 	  return 0;
 	
 	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
-	Pipe_SetPipeToken(PIPE_TOKEN_IN);
 	Pipe_Unfreeze();
 
 	if (Pipe_IsINReceived())
@@ -353,24 +356,27 @@ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo
 	}
 }
 
-uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
+int16_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 {
-	uint8_t ReceivedByte = 0;
-
 	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
-	  return 0;
+	  return -1;
 	  
+	int16_t ReceivedByte = -1;
+
 	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
-	Pipe_SetPipeToken(PIPE_TOKEN_IN);
 	Pipe_Unfreeze();
 
-	ReceivedByte = Pipe_Read_Byte();
-	
-	if (!(Pipe_BytesInPipe()))
-	  Pipe_ClearIN();
+	if (Pipe_IsINReceived())
+	{
+		if (Pipe_BytesInPipe())
+		  ReceivedByte = Pipe_Read_Byte();
+
+		if (!(Pipe_BytesInPipe()))
+		  Pipe_ClearIN();
+	}
 	
 	Pipe_Freeze();
-	
+
 	return ReceivedByte;
 }
 
@@ -426,15 +432,19 @@ static int CDC_Host_putchar(char c,
 
 static int CDC_Host_getchar(FILE* Stream)
 {
-	if (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
+	int16_t ReceivedByte = CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+
+	if (ReceivedByte < 0)
 	  return _FDEV_EOF;
 
-	return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+	return ReceivedByte;
 }
 
 static int CDC_Host_getchar_Blocking(FILE* Stream)
 {
-	while (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
+	int16_t ReceivedByte;
+	
+	while ((ReceivedByte = CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))) < 0)
 	{
 		if (USB_HostState == HOST_STATE_Unattached)
 		  return _FDEV_EOF;
@@ -443,7 +453,7 @@ static int CDC_Host_getchar_Blocking(FILE* Stream)
 		USB_USBTask();
 	}
 
-	return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+	return ReceivedByte;
 }
 
 void CDC_Host_Event_Stub(void)