Added new HID_HOST_BOOT_PROTOCOL_ONLY compile time token to reduce the size of the HID Host Class driver when Report protocol is not needed.

Demos/Host/ClassDriver/KeyboardHost/makefile

@@ -117,6 +117,7 @@ LUFA_PATH = ../../../..
 
 # LUFA library compile-time options
 LUFA_OPTS += -D USB_HOST_ONLY
+LUFA_OPTS += -D HID_HOST_BOOT_PROTOCOL_ONLY
 LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
 
 

Demos/Host/ClassDriver/MouseHost/makefile

@@ -117,6 +117,7 @@ LUFA_PATH = ../../../..
 
 # LUFA library compile-time options
 LUFA_OPTS += -D USB_HOST_ONLY
+LUFA_OPTS += -D HID_HOST_BOOT_PROTOCOL_ONLY
 LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
 
 

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

@@ -153,6 +153,7 @@ void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)
 
 }
 
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
 uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, const uint8_t ReportID, void* Buffer)
 {
 	USB_ControlRequest = (USB_Request_Header_t)
@@ -168,6 +169,7 @@ uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceI
 	
 	return USB_Host_SendControlRequest(Buffer);
 }											   
+#endif
 										   
 uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, void* Buffer)
 {
@@ -181,11 +183,8 @@ uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
 	
 	uint16_t ReportSize;
 
-	if (HIDInterfaceInfo->State.UsingBootProtocol)
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
-	{
+	if (!(HIDInterfaceInfo->State.UsingBootProtocol))
-		ReportSize = Pipe_BytesInPipe();
-	}
-	else
 	{
 		uint8_t ReportID = 0;
 	
@@ -197,6 +196,11 @@ uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
 		
 		ReportSize = USB_GetHIDReportSize(HIDInterfaceInfo->Config.HIDParserData, ReportID, REPORT_ITEM_TYPE_In);
 	}
+	else
+#endif
+	{
+		ReportSize = Pipe_BytesInPipe();
+	}
 
 	if ((ErrorCode = Pipe_Read_Stream_LE(Buffer, ReportSize, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
 	  return ErrorCode;
@@ -207,28 +211,17 @@ uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
 	return PIPE_RWSTREAM_NoError;
 }
 
-uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, uint8_t ReportID, void* Buffer,
+uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
-                                const uint16_t ReportSize)
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+                                const uint8_t ReportID,
+#endif
+                                void* Buffer, const uint16_t ReportSize)
 {
 	if ((USB_HostState != HOST_STATE_Configured) || !(HIDInterfaceInfo->State.IsActive))
 	  return false;
 
-	if (!(HIDInterfaceInfo->State.DeviceUsesOUTPipe))
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
-	{
+	if (HIDInterfaceInfo->State.DeviceUsesOUTPipe)
-		USB_ControlRequest = (USB_Request_Header_t)
-		{
-			.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
-			.bRequest      = REQ_SetReport,
-			.wValue        = ReportID,
-			.wIndex        = HIDInterfaceInfo->State.InterfaceNumber,
-			.wLength       = ReportSize,
-		};
-
-		Pipe_SelectPipe(PIPE_CONTROLPIPE);
-		
-		return USB_Host_SendControlRequest(Buffer);
-	}
-	else
 	{
 		uint8_t ErrorCode;
 	
@@ -246,6 +239,26 @@ uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo
 		
 		return PIPE_RWSTREAM_NoError;
 	}
+	else
+#endif
+	{
+		USB_ControlRequest = (USB_Request_Header_t)
+		{
+			.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
+			.bRequest      = REQ_SetReport,
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+			.wValue        = ReportID,
+#else
+			.wValue        = 0,
+#endif
+			.wIndex        = HIDInterfaceInfo->State.InterfaceNumber,
+			.wLength       = ReportSize,
+		};
+
+		Pipe_SelectPipe(PIPE_CONTROLPIPE);
+		
+		return USB_Host_SendControlRequest(Buffer);
+	}
 }
 
 bool HID_Host_IsReportReceived(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)
@@ -295,6 +308,7 @@ uint8_t HID_Host_SetBootProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInf
 	return HOST_SENDCONTROL_Successful;
 }
 
+#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
 uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo)
 {
 	uint8_t ErrorCode;
@@ -346,5 +360,6 @@ uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceI
 
 	return 0;
 }
+#endif
 
 #endif

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

@@ -77,8 +77,14 @@
 													*   \ref HID_BOOT_KEYBOARD_PROTOCOL or \ref HID_NON_BOOT_PROTOCOL if any
 													*   HID device should be enumerated by the interface
 					                                */
+					#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
 					HID_ReportInfo_t* HIDParserData; /**< HID parser data to store the parsed HID report data, when boot protocol
-					                                  *   is not used */
+					                                  *   is not used
+													  *
+					                                  *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined,
+					                                  *        this method is unavailable.
+					                                  */
+					#endif
 				} Config; /**< Config data for the USB class interface within the device. All elements in this section
 				           *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
 				           */
@@ -157,7 +163,10 @@
 			 */
 			uint8_t HID_Host_ReceiveReport(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, void* Buffer) ATTR_NON_NULL_PTR_ARG(1, 2);
 
+			#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
 			/** Received a HID IN report from the attached device, by the report ID.
+			 *
+			 *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
 			 *
 			 *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
 			 *  \param[in] ReportID  Report ID of the received report if ControlRequest is false, set by the to the Report ID to fetch
@@ -167,10 +176,14 @@
 			 */
 			uint8_t HID_Host_ReceiveReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, const uint8_t ReportID,
 			                                   void* Buffer) ATTR_NON_NULL_PTR_ARG(1, 3);
+			#endif
 			
 			/** Sends an OUT report to the currently attached HID device, using the device's OUT pipe if available or the device's
 			 *  Control pipe if not.
 			 *
+			 *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, the ReportID parameter is removed
+			 *        from the parameter list of this function.
+			 *
 			 *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
 			 *  \param[in] ReportID  Report ID of the report to send to the device, or 0 if the device does not use report IDs
 			 *  \param[in] Buffer  Buffer containing the report to send to the attached device
@@ -179,8 +192,16 @@
 			 *  \return An error code from the \ref USB_Host_SendControlErrorCodes_t enum if the DeviceUsesOUTPipe flag is set in
 			 *          the interface's state structure, a value from the \ref Pipe_Stream_RW_ErrorCodes_t enum otherwise
 			 */
-			uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo, const uint8_t ReportID,
+			uint8_t HID_Host_SendReportByID(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
-			                                void* Buffer, const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1, 3);
+			#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+			                                const uint8_t ReportID,
+			#endif
+			                                void* Buffer, const uint16_t ReportSize)
+			#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
+			                                ATTR_NON_NULL_PTR_ARG(1, 3);
+			#else
+			                                ATTR_NON_NULL_PTR_ARG(1, 2);
+			#endif
 
 			/** Determines if a HID IN report has been received from the attached device on the data IN pipe.
 			 *
@@ -191,6 +212,9 @@
 			bool HID_Host_IsReportReceived(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 			
 			/** Switches the attached HID device's reporting protocol over to the Boot Report protocol mode, on supported devices.
+			 *
+			 *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method must still be called
+			 *        to explicitly place the attached device into boot protocol mode before use.
 			 *
 			 *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
 			 *
@@ -199,12 +223,15 @@
 			 */
 			uint8_t HID_Host_SetBootProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 
+			#if !defined(HID_HOST_BOOT_PROTOCOL_ONLY)
 			/** Switches the attached HID device's reporting protocol over to the standard Report protocol mode. This also retrieves
 			 *  and parses the device's HID report descriptor, so that the size of each report can be determined in advance.
 			 *
 			 *  \note Whether this function is used or not, the \ref CALLBACK_HIDParser_FilterHIDReportItem() callback from the HID
 			 *        Report Parser this function references <b>must</b> be implemented in the user code.
 			 *
+			 *  \note When the HID_HOST_BOOT_PROTOCOL_ONLY compile time token is defined, this method is unavailable.
+			 *
 			 *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class host configuration and state
 			 *
 			 *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum if an error occurs while retrieving the HID
@@ -213,6 +240,7 @@
 			 *          and a value from the \ref HID_Parse_ErrorCodes_t otherwise
 			 */
 			uint8_t HID_Host_SetReportProtocol(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+			#endif
 			
 	/* Private Interface - For use in library only: */
 	#if !defined(__DOXYGEN__)

LUFA/ManPages/ChangeLog.txt

@@ -10,6 +10,8 @@
   *
   *  <b>New:</b>
   *  - Added new Dual Role Keyboard/Mouse demo
+  *  - Added new HID_HOST_BOOT_PROTOCOL_ONLY compile time token to reduce the size of the HID Host Class driver when
+  *    Report protocol is not needed
   *
   *  <b>Changed:</b>
   *  - Removed mostly useless "TestApp" demo, as it was mainly useful only for checking for sytax errors in the library

LUFA/ManPages/CompileTimeTokens.txt

@@ -20,9 +20,17 @@
  *  this token is defined, all ANSI control codes in the application code from the TerminalCodes.h header are removed from
  *  the source code at compile time.
  *
+ *
  *  \section Sec_SummaryUSBClassTokens USB Class Driver Related Tokens
  *  This section describes compile tokens which affect USB class-specific drivers in the LUFA library.
  *
+ *  <b>HID_HOST_BOOT_PROTOCOL_ONLY</b> - ( \ref Group_USBClassHIDHost ) \n
+ *  By default, the USB HID Host class driver is designed to work with HID devices using either the Boot or Report HID
+ *  communication protocols. On devices where the Report protocol is not used (i.e. in applications where only basic
+ *  Mouse or Keyboard operation is desired, using boot compatible devices), the code responsible for the Report protocol
+ *  mode can be removed to save space in the compiled application by defining this token. When defined, it is still neccesary
+ *  to explicitly put the attached device into Boot protocol mode via a call to \ref HID_Host_SetBootProtocol().
+ * 
  *  <b>HID_STATETABLE_STACK_DEPTH</b>=<i>x</i> - ( \ref Group_HIDParser ) \n
  *  HID reports may contain PUSH and POP elements, to store and retrieve the current HID state table onto a stack. This
  *  allows for reports to save the state table before modifying it slightly for a data item, and then restore the previous
@@ -59,6 +67,7 @@
  *  and their sizes calculated/stored into the resultant processed report structure. If not defined, this defaults to the value indicated in
  *  the HID.h file documentation.
  *
+ *
  *  \section Sec_SummaryUSBTokens USB Driver Related Tokens
  *  This section describes compile tokens which affect USB driver stack as a whole in the LUFA library.
  *

LUFA/ManPages/MigrationInformation.txt

@@ -11,6 +11,7 @@
  *  areas relevant to making older projects compatible with the API changes of each new release.
  *
  * \section Sec_MigrationXXXXXX Migrating from 090810 to XXXXXX
+ *  <b>No Migration information for this release.</b>
  *
  * \section Sec_Migration090924 Migrating from 090810 to 090924
  *