X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/c5038f1bf44aea75f1ae1ed035cb7d523ccfdacb..cfe054474ffafddcbba0f6d3f46d3f02473fac96:/LUFA/Drivers/USB/Class/Device/CDC.h

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.h b/LUFA/Drivers/USB/Class/Device/CDC.h
index 7332f56cc..99f8eb2b2 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.h
+++ b/LUFA/Drivers/USB/Class/Device/CDC.h
@@ -147,7 +147,7 @@
 			 *  a mask of CDC_CONTROL_LINE_OUT_* masks.
 			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state.
-			 */		
+			 */
 			void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);
 
 			/** Sends a given string to the attached USB host, if connected. If a host is not connected when the function is called, the
@@ -156,16 +156,20 @@
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state.
 			 *  \param[in] Data  Pointer to the string to send to the host
 			 *  \param[in] Length  Size in bytes of the string to send to the host
+			 *
+			 *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum
 			 */
-			void CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, char* const Data, const uint16_t Length);
+			uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, char* const Data, const uint16_t Length);
 			
 			/** Sends a given byte to the attached USB host, if connected. If a host is not connected when the function is called, the
 			 *  byte is discarded.
 			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state.
 			 *  \param[in] Data  Byte of data to send to the host
+			 *
+			 *  \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum
 			 */
-			void CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, const uint8_t Data);
+			uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, const uint8_t Data);
 			
 			/** Determines the number of bytes received by the CDC interface from the host, waiting to be read.
 			 *
@@ -176,7 +180,7 @@
 			uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);
 			
 			/** Reads a byte of data from the host. If no data is waiting to be read of if a USB host is not connected, the function
-			 *  returns 0. The USB_CDC_BytesReceived() function should be queried before data is recieved to ensure that no data
+			 *  returns 0. The \ref CDC_Device_BytesReceived() function should be queried before data is recieved to ensure that no data
 			 *  underflow occurs.
 			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state.
@@ -185,6 +189,14 @@
 			 */
 			uint8_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);
 			
+			/** Flushes any data waiting to be sent, ensuring that the send buffer is cleared.
+			 *
+			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state.
+			 *
+			 *  \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum
+			 */
+			uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo);
+			
 			/** Sends a Serial Control Line State Change notification to the host. This should be called when the virtual serial
 			 *  control lines (DCD, DSR, etc.) have changed states, or to give BREAK notfications to the host. Line states persist
 			 *  until they are cleared via a second notification. This should be called each time the CDC class driver's