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142 lines
6.1 KiB
142 lines
6.1 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \ingroup Group_USB
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* @defgroup Group_Device Device Management
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*
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* USB Device mode related macros and enums. This module contains macros and enums which are used when
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* the USB controller is initialized in device mode.
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*
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* @{
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*/
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#ifndef __USBDEVICE_H__
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#define __USBDEVICE_H__
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/* Includes: */
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#include <avr/pgmspace.h>
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#include <avr/eeprom.h>
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#include "../../../Common/Common.h"
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#include "../HighLevel/StdDescriptors.h"
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#include "Endpoint.h"
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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#if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER) || defined(__DOXYGEN__)
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/** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
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* USB interface should be initialized in low speed (1.5Mb/s) mode.
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*
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* \note Low Speed mode is not available on all USB AVR models.
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*
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* \note Restrictions apply on the number, size and type of endpoints which can be used
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* when running in low speed mode -- refer to the USB 2.0 standard.
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*/
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#define USB_DEVICE_OPT_LOWSPEED (1 << 0)
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#endif
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/** Mask for the Options parameter of the USB_Init() function. This indicates that the
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* USB interface should be initialized in full speed (12Mb/s) mode.
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*/
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#define USB_DEVICE_OPT_FULLSPEED (0 << 0)
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/* Pseudo-Function Macros: */
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#if defined(__DOXYGEN__)
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/** Sends a Remote Wakeup request to the host. This signals to the host that the device should
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* be taken out of suspended mode, and communications should resume.
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*
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* Typically, this is implemented so that HID devices (mice, keyboards, etc.) can wake up the
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* host computer when the host has suspended all USB devices to enter a low power state.
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*
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* \note This macro should only be used if the device has indicated to the host that it
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* supports the Remote Wakeup feature in the device descriptors, and should only be
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* issued if the host is currently allowing remote wakeup events from the device (i.e.,
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* the \ref USB_RemoteWakeupEnabled flag is set).
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*
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* \see \ref Group_Descriptors for more information on the RMWAKEUP feature and device descriptors.
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*/
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static inline void USB_Device_SendRemoteWakeup(void);
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/** Indicates if a Remote Wakeup request is being sent to the host. This returns true if a
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* remote wakeup is currently being sent, false otherwise.
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*
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* This can be used in conjunction with the \ref USB_Device_IsUSBSuspended() macro to determine if
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* a sent RMWAKEUP request was accepted or rejected by the host.
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*
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* \note This macro should only be used if the device has indicated to the host that it
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* supports the Remote Wakeup feature in the device descriptors.
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*
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* \see \ref Group_Descriptors for more information on the RMWAKEUP feature and device descriptors.
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*
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* \return Boolean true if no Remote Wakeup request is currently being sent, false otherwise
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*/
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static inline bool USB_Device_IsRemoteWakeupSent(void);
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/** Indicates if the device is currently suspended by the host. Whilst suspended, the device is
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* to enter a low power state until resumed by the host. No USB traffic to or from the device
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* can occur (except for Remote Wakeup requests) during suspension by the host.
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*
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* \return Boolean true if the USB communications have been suspended by the host, false otherwise.
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*/
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static inline bool USB_Device_IsUSBSuspended(void);
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#else
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#define USB_Device_SendRemoteWakeup() MACROS{ UDCON |= (1 << RMWKUP); }MACROE
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#define USB_Device_IsRemoteWakeupSent() ((UDCON & (1 << RMWKUP)) ? false : true)
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#define USB_Device_IsUSBSuspended() ((UDINT & (1 << SUSPI)) ? true : false)
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#endif
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/* Enums: */
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/** Enum for the ErrorCode parameter of the \ref EVENT_USB_DeviceError() event.
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*
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* \see Events.h for more information on this event.
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*/
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enum USB_Device_ErrorCodes_t
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{
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DEVICE_ERROR_GetDescriptorNotHooked = 0, /**< Indicates that the \ref USB_GetDescriptor() method
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* has not been hooked by the user application.
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*
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* \see \ref Group_Descriptors for more information on
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* the \ref USB_GetDescriptor() method.
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*/
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};
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Macros: */
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#define USB_Device_SetLowSpeed() MACROS{ UDCON |= (1 << LSM); }MACROE
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#define USB_Device_SetHighSpeed() MACROS{ UDCON &= ~(1 << LSM); }MACROE
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#endif
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#endif
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/** @} */
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