X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/864196c884ef3602aee44f1a68aceb5819a07f21..ab2ae13d81427ddddbd24e8ba6bdfbd2f05ff958:/LUFA/Drivers/USB/Class/Device/HID.c

diff --git a/LUFA/Drivers/USB/Class/Device/HID.c b/LUFA/Drivers/USB/Class/Device/HID.c
index 43f11ee7c..40f7d2f49 100644
--- a/LUFA/Drivers/USB/Class/Device/HID.c
+++ b/LUFA/Drivers/USB/Class/Device/HID.c
@@ -51,15 +51,15 @@ void HID_Device_ProcessControlPacket(USB_ClassInfo_HID_Device_t* const HIDInterf
 			{
 				Endpoint_ClearSETUP();	
 
-				uint8_t  ReportINData[HIDInterfaceInfo->Config.ReportINBufferSize];
 				uint16_t ReportINSize;
 				uint8_t  ReportID = (USB_ControlRequest.wValue & 0xFF);
 
-				memset(ReportINData, 0, sizeof(ReportINData));
+				memset(HIDInterfaceInfo->Config.PrevReportINBuffer, 0, HIDInterfaceInfo->Config.PrevReportINBufferSize);
 				
-				ReportINSize = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
+				CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID,
+				                                    HIDInterfaceInfo->Config.PrevReportINBuffer, &ReportINSize);
 
-				Endpoint_Write_Control_Stream_LE(ReportINData, ReportINSize);
+				Endpoint_Write_Control_Stream_LE(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize);
 				Endpoint_ClearOUT();
 			}
 		
@@ -136,8 +136,8 @@ void HID_Device_ProcessControlPacket(USB_ClassInfo_HID_Device_t* const HIDInterf
 bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
 {
 	memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State));
-	HIDInterfaceInfo->State.IdleCount = 500;
 	HIDInterfaceInfo->State.UsingReportProtocol = true;
+	HIDInterfaceInfo->State.IdleCount = 500;
 
 	if (!(Endpoint_ConfigureEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber, EP_TYPE_INTERRUPT,
 									 ENDPOINT_DIR_IN, HIDInterfaceInfo->Config.ReportINEndpointSize, ENDPOINT_BANK_SINGLE)))
@@ -155,22 +155,25 @@ void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
 
 	Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber);
 	
-	if (Endpoint_IsReadWriteAllowed() &&
-	    !(HIDInterfaceInfo->State.IdleCount && HIDInterfaceInfo->State.IdleMSRemaining))
+	if (Endpoint_IsReadWriteAllowed())
 	{
-		if (HIDInterfaceInfo->State.IdleCount && !(HIDInterfaceInfo->State.IdleMSRemaining))
-		  HIDInterfaceInfo->State.IdleMSRemaining = HIDInterfaceInfo->State.IdleCount;
-
-		uint8_t  ReportINData[HIDInterfaceInfo->Config.ReportINBufferSize];
-		uint16_t ReportINSize;
+		uint8_t  ReportINData[HIDInterfaceInfo->Config.PrevReportINBufferSize];
 		uint8_t  ReportID = 0;
+		uint16_t ReportINSize;
 
 		memset(ReportINData, 0, sizeof(ReportINData));
 
-		ReportINSize = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
+		bool ForceSend = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData, &ReportINSize);
 
-		if (ReportINSize)
+		bool StatesChanged     = (memcmp(ReportINData, HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize) != 0);
+		bool IdlePeriodElapsed = (HIDInterfaceInfo->State.IdleCount && !(HIDInterfaceInfo->State.IdleMSRemaining));
+		
+		memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, ReportINSize);
+
+		if (ReportINSize && (ForceSend || StatesChanged || IdlePeriodElapsed))
 		{
+			HIDInterfaceInfo->State.IdleMSRemaining = HIDInterfaceInfo->State.IdleCount;
+
 			if (ReportID)
 			  Endpoint_Write_Stream_LE(&ReportID, sizeof(ReportID), NO_STREAM_CALLBACK);
 
@@ -181,4 +184,10 @@ void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
 	}
 }
 
+void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo)
+{
+	if (HIDInterfaceInfo->State.IdleMSRemaining)
+	  HIDInterfaceInfo->State.IdleMSRemaining--;
+}
+
 #endif