1 files changed, 294 insertions, 0 deletions
diff --git a/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c b/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c
new file mode 100644
index 000000000..f1dd7a788
--- /dev/null
+++ b/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c
@@ -0,0 +1,294 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Main source file for the RNDISEthernet demo. This file contains the main tasks of the demo and
+ *  is responsible for the initial application hardware configuration.
+ */
+
+#include "RNDISEthernet.h"
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ *  enters a loop to run the application tasks in sequence.
+ */
+int main(void)
+{
+	SetupHardware();
+
+	/* Webserver Initialization */
+	TCP_Init();
+	Webserver_Init();
+
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	GlobalInterruptEnable();
+
+	for (;;)
+	{
+		Ethernet_Task();
+		TCP_Task();
+		RNDIS_Task();
+		USB_USBTask();
+	}
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Disable clock division */
+	clock_prescale_set(clock_div_1);
+#elif (ARCH == ARCH_XMEGA)
+	/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
+	XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
+	XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
+
+	/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
+	XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
+	XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
+
+	PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
+#endif
+
+	/* Hardware Initialization */
+	LEDs_Init();
+	Serial_Init(9600, false);
+	USB_Init();
+
+	/* Create a stdio stream for the serial port for stdin and stdout */
+	Serial_CreateStream(NULL);
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
+ *  starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Device_Connect(void)
+{
+	/* Indicate USB enumerating */
+	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ *  the status LEDs and stops all the relevant tasks.
+ */
+void EVENT_USB_Device_Disconnect(void)
+{
+	/* Indicate USB not ready */
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration
+ *  of the USB device after enumeration, and configures the RNDIS device endpoints and starts the relevant tasks.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	bool ConfigSuccess = true;
+
+	/* Setup RNDIS Data Endpoints */
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1);
+
+	/* Indicate endpoint configuration success or failure */
+	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ *  the device from the USB host before passing along unhandled control requests to the library for processing
+ *  internally.
+ */
+void EVENT_USB_Device_ControlRequest(void)
+{
+	/* Process RNDIS class commands */
+	switch (USB_ControlRequest.bRequest)
+	{
+		case RNDIS_REQ_SendEncapsulatedCommand:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+
+				/* Read in the RNDIS message into the message buffer */
+				Endpoint_Read_Control_Stream_LE(RNDISMessageBuffer, USB_ControlRequest.wLength);
+				Endpoint_ClearIN();
+
+				/* Process the RNDIS message */
+				ProcessRNDISControlMessage();
+			}
+
+			break;
+		case RNDIS_REQ_GetEncapsulatedResponse:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				/* Check if a response to the last message is ready */
+				if (!(MessageHeader->MessageLength))
+				{
+					/* Set the response to a single 0x00 byte to indicate that no response is ready */
+					RNDISMessageBuffer[0] = 0;
+					MessageHeader->MessageLength = 1;
+				}
+
+				Endpoint_ClearSETUP();
+
+				/* Write the message response data to the endpoint */
+				Endpoint_Write_Control_Stream_LE(RNDISMessageBuffer, MessageHeader->MessageLength);
+				Endpoint_ClearOUT();
+
+				/* Reset the message header once again after transmission */
+				MessageHeader->MessageLength = 0;
+			}
+
+			break;
+	}
+}
+
+/** Task to manage the sending and receiving of encapsulated RNDIS data and notifications. This removes the RNDIS
+ *  wrapper from received Ethernet frames and places them in the FrameIN global buffer, or adds the RNDIS wrapper
+ *  to a frame in the FrameOUT global before sending the buffer contents to the host.
+ */
+void RNDIS_Task(void)
+{
+	/* Select the notification endpoint */
+	Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPADDR);
+
+	/* Check if a message response is ready for the host */
+	if (Endpoint_IsINReady() && ResponseReady)
+	{
+		USB_Request_Header_t Notification = (USB_Request_Header_t)
+			{
+				.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
+				.bRequest      = RNDIS_NOTIF_ResponseAvailable,
+				.wValue        = 0,
+				.wIndex        = 0,
+				.wLength       = 0,
+			};
+
+		/* Indicate that a message response is ready for the host */
+		Endpoint_Write_Stream_LE(&Notification, sizeof(Notification), NULL);
+
+		/* Finalize the stream transfer to send the last packet */
+		Endpoint_ClearIN();
+
+		/* Indicate a response is no longer ready */
+		ResponseReady = false;
+	}
+
+	/* Don't process the data endpoints until the system is in the data initialized state, and the buffer is free */
+	if ((CurrRNDISState == RNDIS_Data_Initialized) && !(MessageHeader->MessageLength))
+	{
+		/* Create a new packet header for reading/writing */
+		RNDIS_Packet_Message_t RNDISPacketHeader;
+
+		/* Select the data OUT endpoint */
+		Endpoint_SelectEndpoint(CDC_RX_EPADDR);
+
+		/* Check if the data OUT endpoint contains data, and that the IN buffer is empty */
+		if (Endpoint_IsOUTReceived() && !(FrameIN.FrameLength))
+		{
+			/* Read in the packet message header */
+			Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL);
+
+			/* Stall the request if the data is too large */
+			if (RNDISPacketHeader.DataLength > ETHERNET_FRAME_SIZE_MAX)
+			{
+				Endpoint_StallTransaction();
+				return;
+			}
+
+			/* Read in the Ethernet frame into the buffer */
+			Endpoint_Read_Stream_LE(FrameIN.FrameData, RNDISPacketHeader.DataLength, NULL);
+
+			/* Finalize the stream transfer to send the last packet */
+			Endpoint_ClearOUT();
+
+			/* Store the size of the Ethernet frame */
+			FrameIN.FrameLength = RNDISPacketHeader.DataLength;
+		}
+
+		/* Select the data IN endpoint */
+		Endpoint_SelectEndpoint(CDC_TX_EPADDR);
+
+		/* Check if the data IN endpoint is ready for more data, and that the IN buffer is full */
+		if (Endpoint_IsINReady() && FrameOUT.FrameLength)
+		{
+			/* Clear the packet header with all 0s so that the relevant fields can be filled */
+			memset(&RNDISPacketHeader, 0, sizeof(RNDIS_Packet_Message_t));
+
+			/* Construct the required packet header fields in the buffer */
+			RNDISPacketHeader.MessageType   = REMOTE_NDIS_PACKET_MSG;
+			RNDISPacketHeader.MessageLength = (sizeof(RNDIS_Packet_Message_t) + FrameOUT.FrameLength);
+			RNDISPacketHeader.DataOffset    = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t));
+			RNDISPacketHeader.DataLength    = FrameOUT.FrameLength;
+
+			/* Send the packet header to the host */
+			Endpoint_Write_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL);
+
+			/* Send the Ethernet frame data to the host */
+			Endpoint_Write_Stream_LE(FrameOUT.FrameData, RNDISPacketHeader.DataLength, NULL);
+
+			/* Finalize the stream transfer to send the last packet */
+			Endpoint_ClearIN();
+
+			/* Indicate Ethernet OUT buffer no longer full */
+			FrameOUT.FrameLength = 0;
+		}
+	}
+}
+
+/** Ethernet frame processing task. This task checks to see if a frame has been received, and if so hands off the processing
+ *  of the frame to the Ethernet processing routines.
+ */
+void Ethernet_Task(void)
+{
+	/* Task for Ethernet processing. Incoming ethernet frames are loaded into the FrameIN structure, and
+	   outgoing frames should be loaded into the FrameOUT structure. Both structures can only hold a single
+	   Ethernet frame at a time, so the FrameInBuffer bool is used to indicate when the buffers contain data. */
+
+	/* Device must be connected and configured for the task to run */
+	if (USB_DeviceState != DEVICE_STATE_Configured)
+	  return;
+
+	/* Check if a frame has been written to the IN frame buffer */
+	if (FrameIN.FrameLength)
+	{
+		/* Indicate packet processing started */
+		LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
+
+		/* Process the ethernet frame - replace this with your own Ethernet handler code as desired */
+		Ethernet_ProcessPacket();
+
+		/* Indicate packet processing complete */
+		LEDs_SetAllLEDs(LEDMASK_USB_READY);
+	}
+}
+