1 files changed, 297 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/Host_UC3.c b/LUFA/Drivers/USB/Core/UC3/Host_UC3.c
new file mode 100644
index 0000000000..2c182ab69c
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/UC3/Host_UC3.c
@@ -0,0 +1,297 @@
+/*
+             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.
+*/
+
+#include "../../../../Common/Common.h"
+#if (ARCH == ARCH_UC3)
+
+#define  __INCLUDE_FROM_USB_DRIVER
+#include "../USBMode.h"
+
+#if defined(USB_CAN_BE_HOST)
+
+#define  __INCLUDE_FROM_HOST_C
+#include "../Host.h"
+
+void USB_Host_ProcessNextHostState(void)
+{
+	uint8_t ErrorCode    = HOST_ENUMERROR_NoError;
+	uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
+
+	static uint16_t WaitMSRemaining;
+	static uint8_t  PostWaitState;
+
+	switch (USB_HostState)
+	{
+		case HOST_STATE_WaitForDevice:
+			if (WaitMSRemaining)
+			{
+				if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
+				{
+					USB_HostState = PostWaitState;
+					ErrorCode     = HOST_ENUMERROR_WaitStage;
+					break;
+				}
+
+				if (!(--WaitMSRemaining))
+				  USB_HostState = PostWaitState;
+			}
+
+			break;
+		case HOST_STATE_Powered:
+			WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
+
+			USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;
+			break;
+		case HOST_STATE_Powered_WaitForDeviceSettle:
+			if (WaitMSRemaining--)
+			{
+				Delay_MS(1);
+				break;
+			}
+			else
+			{
+				USB_Host_VBUS_Manual_Off();
+
+				USB_OTGPAD_On();
+				USB_Host_VBUS_Auto_Enable();
+				USB_Host_VBUS_Auto_On();
+
+				#if defined(NO_AUTO_VBUS_MANAGEMENT)
+				USB_Host_VBUS_Manual_Enable();
+				USB_Host_VBUS_Manual_On();
+				#endif
+
+				USB_HostState = HOST_STATE_Powered_WaitForConnect;
+			}
+
+			break;
+		case HOST_STATE_Powered_WaitForConnect:
+			if (USB_INT_HasOccurred(USB_INT_DCONNI))
+			{
+				USB_INT_Clear(USB_INT_DCONNI);
+				USB_INT_Clear(USB_INT_DDISCI);
+
+				USB_INT_Clear(USB_INT_VBERRI);
+				USB_INT_Enable(USB_INT_VBERRI);
+
+				USB_Host_ResumeBus();
+				Pipe_ClearPipes();
+
+				HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);
+			}
+
+			break;
+		case HOST_STATE_Powered_DoReset:
+			USB_Host_ResetDevice();
+
+			HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);
+			break;
+		case HOST_STATE_Powered_ConfigPipe:
+			if (!(Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL, ENDPOINT_CONTROLEP, PIPE_CONTROLPIPE_DEFAULT_SIZE, 1)))
+			{
+				ErrorCode    = HOST_ENUMERROR_PipeConfigError;
+				SubErrorCode = 0;
+				break;
+			}
+
+			USB_HostState = HOST_STATE_Default;
+			break;
+		case HOST_STATE_Default:
+			USB_ControlRequest = (USB_Request_Header_t)
+				{
+					.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
+					.bRequest      = REQ_GetDescriptor,
+					.wValue        = (DTYPE_Device << 8),
+					.wIndex        = 0,
+					.wLength       = 8,
+				};
+
+			uint8_t DataBuffer[8];
+
+			Pipe_SelectPipe(PIPE_CONTROLPIPE);
+			if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
+			{
+				ErrorCode = HOST_ENUMERROR_ControlError;
+				break;
+			}
+
+			USB_Host_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];
+
+			USB_Host_ResetDevice();
+
+			HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);
+			break;
+		case HOST_STATE_Default_PostReset:
+			if (!(Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL, ENDPOINT_CONTROLEP, USB_Host_ControlPipeSize, 1)))
+			{
+				ErrorCode    = HOST_ENUMERROR_PipeConfigError;
+				SubErrorCode = 0;
+				break;
+			}
+
+			USB_ControlRequest = (USB_Request_Header_t)
+				{
+					.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
+					.bRequest      = REQ_SetAddress,
+					.wValue        = USB_HOST_DEVICEADDRESS,
+					.wIndex        = 0,
+					.wLength       = 0,
+				};
+
+			if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+			{
+				ErrorCode = HOST_ENUMERROR_ControlError;
+				break;
+			}
+
+			HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);
+			break;
+		case HOST_STATE_Default_PostAddressSet:
+			USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
+
+			USB_HostState = HOST_STATE_Addressed;
+
+			EVENT_USB_Host_DeviceEnumerationComplete();
+			break;
+
+		default:
+			break;
+	}
+
+	if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))
+	{
+		EVENT_USB_Host_DeviceEnumerationFailed(ErrorCode, SubErrorCode);
+
+		USB_Host_VBUS_Auto_Off();
+
+		EVENT_USB_Host_DeviceUnattached();
+
+		USB_ResetInterface();
+	}
+}
+
+uint8_t USB_Host_WaitMS(uint8_t MS)
+{
+	bool    BusSuspended = USB_Host_IsBusSuspended();
+	uint8_t ErrorCode    = HOST_WAITERROR_Successful;
+	bool    HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
+
+	USB_INT_Disable(USB_INT_HSOFI);
+	USB_INT_Clear(USB_INT_HSOFI);
+
+	USB_Host_ResumeBus();
+
+	while (MS)
+	{
+		if (USB_INT_HasOccurred(USB_INT_HSOFI))
+		{
+			USB_INT_Clear(USB_INT_HSOFI);
+			MS--;
+		}
+
+		if ((USB_HostState == HOST_STATE_Unattached) || (USB_CurrentMode != USB_MODE_Host))
+		{
+			ErrorCode = HOST_WAITERROR_DeviceDisconnect;
+
+			break;
+		}
+
+		if (Pipe_IsError())
+		{
+			Pipe_ClearError();
+			ErrorCode = HOST_WAITERROR_PipeError;
+
+			break;
+		}
+
+		if (Pipe_IsStalled())
+		{
+			Pipe_ClearStall();
+			ErrorCode = HOST_WAITERROR_SetupStalled;
+
+			break;
+		}
+	}
+
+	if (BusSuspended)
+	  USB_Host_SuspendBus();
+
+	if (HSOFIEnabled)
+	  USB_INT_Enable(USB_INT_HSOFI);
+
+	return ErrorCode;
+}
+
+static void USB_Host_ResetDevice(void)
+{
+	bool BusSuspended = USB_Host_IsBusSuspended();
+
+	USB_INT_Disable(USB_INT_DDISCI);
+
+	USB_Host_ResetBus();
+	while (!(USB_Host_IsBusResetComplete()));
+	USB_Host_ResumeBus();
+
+	USB_Host_ConfigurationNumber = 0;
+
+	bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
+
+	USB_INT_Disable(USB_INT_HSOFI);
+	USB_INT_Clear(USB_INT_HSOFI);
+
+	for (uint8_t MSRem = 10; MSRem != 0; MSRem--)
+	{
+		/* Workaround for powerless-pull-up devices. After a USB bus reset,
+		   all disconnection interrupts are suppressed while a USB frame is
+		   looked for - if it is found within 10ms, the device is still
+		   present.                                                        */
+
+		if (USB_INT_HasOccurred(USB_INT_HSOFI))
+		{
+			USB_INT_Clear(USB_INT_HSOFI);
+			USB_INT_Clear(USB_INT_DDISCI);
+			break;
+		}
+
+		Delay_MS(1);
+	}
+
+	if (HSOFIEnabled)
+	  USB_INT_Enable(USB_INT_HSOFI);
+
+	if (BusSuspended)
+	  USB_Host_SuspendBus();
+
+	USB_INT_Enable(USB_INT_DDISCI);
+}
+
+#endif
+
+#endif