Add return codes to the CDC Host Class driver String/Byte transmission functions.

LUFA/Drivers/USB/Class/Host/CDC.c

@@ -256,21 +256,27 @@ uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* CDCInterfa
 	return USB_Host_SendControlRequest(NULL);
 }
 
-void CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length)
+uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length)
 {
 	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.Active))
 	  return;
 
+	uint8_t ErrorCode;
+
 	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);	
 	Pipe_Unfreeze();
-	Pipe_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);	
+	ErrorCode = Pipe_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);
 	Pipe_Freeze();
+	
+	return ErrorCode;
 }
 
-void CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data)
+uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data)
 {
 	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.Active))
 	  return;
+	  
+	uint8_t ErrorCode = PIPE_READYWAIT_NoError;
 
 	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);	
 	Pipe_Unfreeze();
@@ -278,11 +284,13 @@ void CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data)
 	if (!(Pipe_IsReadWriteAllowed()))
 	{
 		Pipe_ClearOUT();
-		Pipe_WaitUntilReady();
+		ErrorCode = Pipe_WaitUntilReady();
 	}
 
 	Pipe_Write_Byte(Data);	
 	Pipe_Freeze();
+	
+	return ErrorCode;
 }
 
 uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)

LUFA/Drivers/USB/Class/Host/CDC.h

@@ -163,16 +163,20 @@
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *  \param[in] Data  Pointer to the string to send to the device
 			 *  \param[in] Length  Size in bytes of the string to send to the device
+			 *
+			 *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum
 			 */
-			void CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length) ATTR_NON_NULL_PTR_ARG(1, 2);
+			uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length) ATTR_NON_NULL_PTR_ARG(1, 2);
 			
 			/** Sends a given byte to the attached USB device, 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 host configuration and state
 			 *  \param[in] Data  Byte of data to send to the device
+			 *
+			 *  \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum
 			 */
-			void CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
+			uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);
 
 			/** Determines the number of bytes received by the CDC interface from the device, waiting to be read.
 			 *

LUFA/Drivers/USB/Class/Host/HIDParser.c

@@ -51,9 +51,10 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
 
 	while (ReportSize)
 	{
-		uint8_t  HIDReportItem  = *(ReportData++);
+		uint8_t  HIDReportItem  = *ReportData;
 		uint32_t ReportItemData = 0;
 		
+		ReportData++;
 		ReportSize--;
 		
 		switch (HIDReportItem & DATA_SIZE_MASK)

LUFA/Drivers/USB/Class/Host/HIDParser.h

@@ -79,11 +79,11 @@
 		#if !defined(HID_STATETABLE_STACK_DEPTH) || defined(__DOXYGEN__)
 			/** Constant indicating the maximum stack depth of the state table. A larger state table
 			 *  allows for more PUSH/POP report items to be nested, but consumes more memory. By default
-			 *  this is set to 3 levels (allowing for two PUSHes to be nested) but this can be overridden by
+			 *  this is set to 2 levels (allowing non-nested PUSH items) but this can be overridden by
 			 *  defining HID_STATETABLE_STACK_DEPTH to another value in the user project makefile, passing the
 			 *  define to the compiler using the -D compiler switch.
 			 */
-			#define HID_STATETABLE_STACK_DEPTH    3
+			#define HID_STATETABLE_STACK_DEPTH    2
 		#endif
 		
 		#if !defined(HID_USAGE_STACK_DEPTH) || defined(__DOXYGEN__)
@@ -134,7 +134,7 @@
 				HID_PARSE_HIDStackOverflow            = 1, /**< More than \ref HID_STATETABLE_STACK_DEPTH nested PUSHes in the report. */ 
 				HID_PARSE_HIDStackUnderflow           = 2, /**< A POP was found when the state table stack was empty. */
 				HID_PARSE_InsufficientReportItems     = 3, /**< More than \ref HID_MAX_REPORTITEMS report items in the report. */
-				HID_PARSE_UnexpectedEndCollection     = 4, /**< END COLLECTION found without matching COLLECTION item. */
+				HID_PARSE_UnexpectedEndCollection     = 4, /**< An END COLLECTION item found without matching COLLECTION item. */
 				HID_PARSE_InsufficientCollectionPaths = 5, /**< More than \ref HID_MAX_COLLECTIONS collections in the report. */
 				HID_PARSE_UsageStackOverflow          = 6, /**< More than \ref HID_USAGE_STACK_DEPTH usages listed in a row. */
 			};

LUFA/ManPages/ChangeLog.txt

@@ -16,14 +16,14 @@
   *  - Added new Endpoint_SetEndpointDirection() macro for bi-directional endpoints
   *  - Added new AVRISP project, a LUFA powered clone of the Atmel AVRISP-MKII programmer
   *  - Added ShutDown() functions for all hardware peripheral drivers, so that peripherals can be turned off after use
+  *  - Added new CDC_Device_Flush() command to the device mode CDC Class driver to flush Device->Host data
+  *  - Added extra masks to the SPI driver, changed SPI_Init() so that the clock polarity and sample modes can be set
   *  
   *  <b>Changed:</b>
   *  - SetIdle requests to the HID device driver with a 0 idle period (send changes only) now only affect the requested
   *    HID interface within the device, not all HID interfaces
-  *  - Added new CDC_Device_Flush() command to the device mode CDC Class driver
   *  - Added explicit attribute masks to the device mode demos' descriptors
   *  - Added return values to the CDC and MIDI class driver transmit functions
-  *  - Added extra masks to the SPI driver, changed SPI_Init() so that the clock polarity and sample modes can be set
   *  - Optimized Endpoint_Read_Word_* and Pipe_Read_Word_* macros to reduce compiled size
   *  - Added non-null function parameter pointer restrictions to USB Class drivers to improve user code reliability
   *  - Added new "Common" section to the class drivers, to hold all mode-independant definitions for clarity

LUFA/ManPages/FutureChanges.txt

@@ -12,7 +12,7 @@
   *  or post your suggestion as an enhancement request to the project bug tracker.
   *
   *  <b>Targeted for This Release:</b>
-  *  - Finish HID and Still Image Host Mode Class Drivers, add demo summaries, add return codes to all relevant functions
+  *  - Finish HID and Still Image Host Mode Class Drivers, add demo summaries
   *  - Add overviews of each of the officially supported boards to the manual
   *  - Re-add in flip, flip-ee, dfu and dfu-ee targets to project makefiles
   *  - Add in new invalid event hook check targets to project makefiles