--- /dev/null
+/*
+ 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
+ * \brief USB Host definitions for the AVR8 microcontrollers.
+ * \copydetails Group_Host_AVR8
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the USB driver
+ * dispatch header located in LUFA/Drivers/USB/USB.h.
+ */
+
+/** \ingroup Group_Host
+ * \defgroup Group_Host_AVR8 Host Management (AVR8)
+ * \brief USB Host definitions for the AVR8 microcontrollers.
+ *
+ * Architecture specific USB Host definitions for the Atmel 8-bit AVR microcontrollers.
+ *
+ * @{
+ */
+
+#ifndef __USBHOST_AVR8_H__
+#define __USBHOST_AVR8_H__
+
+ /* Includes: */
+ #include "../../../../Common/Common.h"
+ #include "../StdDescriptors.h"
+ #include "../Pipe.h"
+ #include "../USBInterrupt.h"
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_USB_DRIVER)
+ #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
+ #endif
+
+ #if defined(INVERTED_VBUS_ENABLE_LINE) && !defined(NO_AUTO_VBUS_MANAGEMENT)
+ #error The INVERTED_VBUS_ENABLE_LINE compile option requires NO_AUTO_VBUS_MANAGEMENT for the AVR8 architecture.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** Indicates the fixed USB device address which any attached device is enumerated to when in
+ * host mode. As only one USB device may be attached to the AVR in host mode at any one time
+ * and that the address used is not important (other than the fact that it is non-zero), a
+ * fixed value is specified by the library.
+ */
+ #define USB_HOST_DEVICEADDRESS 1
+
+ #if !defined(HOST_DEVICE_SETTLE_DELAY_MS) || defined(__DOXYGEN__)
+ /** Constant for the delay in milliseconds after a device is connected before the library
+ * will start the enumeration process. Some devices require a delay of up to 5 seconds
+ * after connection before the enumeration process can start or incorrect operation will
+ * occur.
+ *
+ * The default delay value may be overridden in the user project makefile by defining the
+ * \c HOST_DEVICE_SETTLE_DELAY_MS token to the required delay in milliseconds, and passed to the
+ * compiler using the -D switch.
+ */
+ #define HOST_DEVICE_SETTLE_DELAY_MS 1000
+ #endif
+
+ /** Enum for the error codes for the \ref EVENT_USB_Host_HostError() event.
+ *
+ * \see \ref Group_Events for more information on this event.
+ */
+ enum USB_Host_ErrorCodes_t
+ {
+ HOST_ERROR_VBusVoltageDip = 0, /**< VBUS voltage dipped to an unacceptable level. This
+ * error may be the result of an attached device drawing
+ * too much current from the VBUS line, or due to the
+ * AVR's power source being unable to supply sufficient
+ * current.
+ */
+ };
+
+ /** Enum for the error codes for the \ref EVENT_USB_Host_DeviceEnumerationFailed() event.
+ *
+ * \see \ref Group_Events for more information on this event.
+ */
+ enum USB_Host_EnumerationErrorCodes_t
+ {
+ HOST_ENUMERROR_NoError = 0, /**< No error occurred. Used internally, this is not a valid
+ * ErrorCode parameter value for the \ref EVENT_USB_Host_DeviceEnumerationFailed()
+ * event.
+ */
+ HOST_ENUMERROR_WaitStage = 1, /**< One of the delays between enumeration steps failed
+ * to complete successfully, due to a timeout or other
+ * error.
+ */
+ HOST_ENUMERROR_NoDeviceDetected = 2, /**< No device was detected, despite the USB data lines
+ * indicating the attachment of a device.
+ */
+ HOST_ENUMERROR_ControlError = 3, /**< One of the enumeration control requests failed to
+ * complete successfully.
+ */
+ HOST_ENUMERROR_PipeConfigError = 4, /**< The default control pipe (address 0) failed to
+ * configure correctly.
+ */
+ };
+
+ /* Inline Functions: */
+ /** Returns the current USB frame number, when in host mode. Every millisecond the USB bus is active (i.e. not suspended)
+ * the frame number is incremented by one.
+ *
+ * \return Current USB frame number from the USB controller.
+ */
+ static inline uint16_t USB_Host_GetFrameNumber(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint16_t USB_Host_GetFrameNumber(void)
+ {
+ return UHFNUM;
+ }
+
+ #if !defined(NO_SOF_EVENTS)
+ /** Enables the host mode Start Of Frame events. When enabled, this causes the
+ * \ref EVENT_USB_Host_StartOfFrame() event to fire once per millisecond, synchronized to the USB bus,
+ * at the start of each USB frame when a device is enumerated while in host mode.
+ *
+ * \note This function is not available when the \c NO_SOF_EVENTS compile time token is defined.
+ */
+ static inline void USB_Host_EnableSOFEvents(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_EnableSOFEvents(void)
+ {
+ USB_INT_Enable(USB_INT_HSOFI);
+ }
+
+ /** Disables the host mode Start Of Frame events. When disabled, this stops the firing of the
+ * \ref EVENT_USB_Host_StartOfFrame() event when enumerated in host mode.
+ *
+ * \note This function is not available when the \c NO_SOF_EVENTS compile time token is defined.
+ */
+ static inline void USB_Host_DisableSOFEvents(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_DisableSOFEvents(void)
+ {
+ USB_INT_Disable(USB_INT_HSOFI);
+ }
+ #endif
+
+ /** Resets the USB bus, including the endpoints in any attached device and pipes on the AVR host.
+ * USB bus resets leave the default control pipe configured (if already configured).
+ *
+ * If the USB bus has been suspended prior to issuing a bus reset, the attached device will be
+ * woken up automatically and the bus resumed after the reset has been correctly issued.
+ */
+ static inline void USB_Host_ResetBus(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_ResetBus(void)
+ {
+ UHCON |= (1 << RESET);
+ }
+
+ /** Determines if a previously issued bus reset (via the \ref USB_Host_ResetBus() macro) has
+ * completed.
+ *
+ * \return Boolean \c true if no bus reset is currently being sent, \c false otherwise.
+ */
+ static inline bool USB_Host_IsBusResetComplete(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool USB_Host_IsBusResetComplete(void)
+ {
+ return ((UHCON & (1 << RESET)) ? false : true);
+ }
+
+ /** Resumes USB communications with an attached and enumerated device, by resuming the transmission
+ * of the 1MS Start Of Frame messages to the device. When resumed, USB communications between the
+ * host and attached device may occur.
+ */
+ static inline void USB_Host_ResumeBus(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_ResumeBus(void)
+ {
+ UHCON |= (1 << SOFEN);
+ }
+
+ /** Suspends the USB bus, preventing any communications from occurring between the host and attached
+ * device until the bus has been resumed. This stops the transmission of the 1MS Start Of Frame
+ * messages to the device.
+ *
+ * \attention While the USB bus is suspended, all USB interrupt sources are also disabled; this means that
+ * some events (such as device disconnections) will not fire until the bus is resumed.
+ */
+ static inline void USB_Host_SuspendBus(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_SuspendBus(void)
+ {
+ UHCON &= ~(1 << SOFEN);
+ }
+
+ /** Determines if the USB bus has been suspended via the use of the \ref USB_Host_SuspendBus() macro,
+ * false otherwise. While suspended, no USB communications can occur until the bus is resumed,
+ * except for the Remote Wakeup event from the device if supported.
+ *
+ * \return Boolean \c true if the bus is currently suspended, \c false otherwise.
+ */
+ static inline bool USB_Host_IsBusSuspended(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool USB_Host_IsBusSuspended(void)
+ {
+ return ((UHCON & (1 << SOFEN)) ? false : true);
+ }
+
+ /** Determines if the attached device is currently enumerated in Full Speed mode (12Mb/s), or
+ * false if the attached device is enumerated in Low Speed mode (1.5Mb/s).
+ *
+ * \return Boolean \c true if the attached device is enumerated in Full Speed mode, \c false otherwise.
+ */
+ static inline bool USB_Host_IsDeviceFullSpeed(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool USB_Host_IsDeviceFullSpeed(void)
+ {
+ return ((USBSTA & (1 << SPEED)) ? true : false);
+ }
+
+ /** Determines if the attached device is currently issuing a Remote Wakeup request, requesting
+ * that the host resume the USB bus and wake up the device, \c false otherwise.
+ *
+ * \return Boolean \c true if the attached device has sent a Remote Wakeup request, \c false otherwise.
+ */
+ static inline bool USB_Host_IsRemoteWakeupSent(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool USB_Host_IsRemoteWakeupSent(void)
+ {
+ return ((UHINT & (1 << RXRSMI)) ? true : false);
+ }
+
+ /** Clears the flag indicating that a Remote Wakeup request has been issued by an attached device. */
+ static inline void USB_Host_ClearRemoteWakeupSent(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_ClearRemoteWakeupSent(void)
+ {
+ UHINT &= ~(1 << RXRSMI);
+ }
+
+ /** Accepts a Remote Wakeup request from an attached device. This must be issued in response to
+ * a device's Remote Wakeup request within 2ms for the request to be accepted and the bus to
+ * be resumed.
+ */
+ static inline void USB_Host_ResumeFromWakeupRequest(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_ResumeFromWakeupRequest(void)
+ {
+ UHCON |= (1 << RESUME);
+ }
+
+ /** Determines if a resume from Remote Wakeup request is currently being sent to an attached
+ * device.
+ *
+ * \return Boolean \c true if no resume request is currently being sent, \c false otherwise.
+ */
+ static inline bool USB_Host_IsResumeFromWakeupRequestSent(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool USB_Host_IsResumeFromWakeupRequestSent(void)
+ {
+ return ((UHCON & (1 << RESUME)) ? false : true);
+ }
+
+ /* Private Interface - For use in library only: */
+ #if !defined(__DOXYGEN__)
+ /* Macros: */
+ static inline void USB_Host_HostMode_On(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_HostMode_On(void)
+ {
+ USBCON |= (1 << HOST);
+ }
+
+ static inline void USB_Host_HostMode_Off(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_HostMode_Off(void)
+ {
+ USBCON &= ~(1 << HOST);
+ }
+
+ static inline void USB_Host_VBUS_Auto_Enable(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Auto_Enable(void)
+ {
+ OTGCON &= ~(1 << VBUSHWC);
+ UHWCON |= (1 << UVCONE);
+ }
+
+ static inline void USB_Host_VBUS_Manual_Enable(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Manual_Enable(void)
+ {
+ OTGCON |= (1 << VBUSHWC);
+ UHWCON &= ~(1 << UVCONE);
+
+ DDRE |= (1 << 7);
+ }
+
+ static inline void USB_Host_VBUS_Auto_On(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Auto_On(void)
+ {
+ OTGCON |= (1 << VBUSREQ);
+ }
+
+ static inline void USB_Host_VBUS_Manual_On(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Manual_On(void)
+ {
+ #if defined(INVERTED_VBUS_ENABLE_LINE)
+ PORTE &= ~(1 << 7);
+ #else
+ PORTE |= (1 << 7);
+ #endif
+ }
+
+ static inline void USB_Host_VBUS_Auto_Off(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Auto_Off(void)
+ {
+ OTGCON |= (1 << VBUSRQC);
+ }
+
+ static inline void USB_Host_VBUS_Manual_Off(void) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_VBUS_Manual_Off(void)
+ {
+ #if defined(INVERTED_VBUS_ENABLE_LINE)
+ PORTE |= (1 << 7);
+ #else
+ PORTE &= ~(1 << 7);
+ #endif
+ }
+
+ static inline void USB_Host_SetDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
+ static inline void USB_Host_SetDeviceAddress(const uint8_t Address)
+ {
+ UHADDR = (Address & 0x7F);
+ }
+
+ /* Enums: */
+ enum USB_Host_WaitMSErrorCodes_t
+ {
+ HOST_WAITERROR_Successful = 0,
+ HOST_WAITERROR_DeviceDisconnect = 1,
+ HOST_WAITERROR_PipeError = 2,
+ HOST_WAITERROR_SetupStalled = 3,
+ };
+
+ /* Function Prototypes: */
+ void USB_Host_ProcessNextHostState(void);
+ uint8_t USB_Host_WaitMS(uint8_t MS);
+
+ #if defined(__INCLUDE_FROM_HOST_C)
+ static void USB_Host_ResetDevice(void);
+ #endif
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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