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136 lines
5.3 KiB
136 lines
5.3 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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/** \file
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*
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* Module for device mode request processing. This module allows for the processing of standard control
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* requests to the default control endpoint while in device mode.
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*
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* \see Chapter 9 of the USB 2.0 specification.
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*/
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#ifndef __DEVCHAPTER9_H__
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#define __DEVCHAPTER9_H__
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/* Includes: */
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/eeprom.h>
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#include "../HighLevel/StdDescriptors.h"
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#include "../HighLevel/Events.h"
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#include "LowLevel.h"
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#include "StdRequestType.h"
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Global Variables: */
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/** Indicates the currently set configuration number of the device. USB devices may have several
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* different configurations which the host can select between; this indicates the currently selected
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* value, or 0 if no configuration has been selected.
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*
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* If a device has only one single configuration, the token USE_SINGLE_DEVICE_CONFIGURATION may be
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* defined in the project makefile and passed to the compiler using the -D switch. This optimize for
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* a single configuration, saving a small amount of space in the resulting compiled binary.
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*
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* \note This variable should be treated as read-only in the user application, and never manually
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* changed in value.
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*/
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extern uint8_t USB_ConfigurationNumber;
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/** Indicates if the host is currently allowing the device to issue remote wakeup events. If this
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* flag is cleared, the device should not issue remote wakeup events to the host.
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*
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* \note This variable should be treated as read-only in the user application, and never manually
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* changed in value.
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*/
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extern bool USB_RemoteWakeupEnabled;
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/** Indicates if the device is currently being powered by its own power supply, rather than being
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* powered by the host's USB supply. This flag should remain cleared if the device does not
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* support self powered mode, as indicated in the device descriptors.
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*/
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extern bool USB_CurrentlySelfPowered;
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/* Throwable Events: */
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/** This module raises the USB_UnhandledControlPacket event when a request to the default control
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* endpoint has been received, but the library does not implement an internal handler for it.
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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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RAISES_EVENT(USB_UnhandledControlPacket);
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/** This module raises the USB_ConfigurationChanged event when the host issues a REQ_SetConfiguration
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* device request, to change the currently selected configuration number.
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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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RAISES_EVENT(USB_ConfigurationChanged);
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/** This module raises the USB_DeviceEnumerationComplete event when the host has completed its
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* enumeration of the device (i.e. when a REQ_SetConfiguration request changes the current configuration
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* number from 0 to a non-zero value).
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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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RAISES_EVENT(USB_DeviceEnumerationComplete);
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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#if defined(USE_RAM_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS)
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#error USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
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#endif
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/* Function Prototypes: */
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void USB_Device_ProcessControlPacket(void);
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#if defined(INCLUDE_FROM_DEVCHAPTER9_C)
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static void USB_Device_SetAddress(void);
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static void USB_Device_SetConfiguration(void);
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static void USB_Device_GetConfiguration(void);
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static void USB_Device_GetDescriptor(void);
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static void USB_Device_GetStatus(const uint8_t bmRequestType);
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#if !defined(FEATURELESS_CONTROL_ONLY_DEVICE)
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static void USB_Device_ClearSetFeature(const uint8_t bRequest, const uint8_t bmRequestType);
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#endif
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#endif
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#endif
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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