You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
333 lines
18 KiB
333 lines
18 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2010.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2010 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 disclaim 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.
|
|
*/
|
|
|
|
/** \ingroup Group_USB
|
|
* @defgroup Group_Events USB Events
|
|
*
|
|
* This module contains macros and functions relating to the management of library events, which are small
|
|
* pieces of code similar to ISRs which are run when a given condition is met. Each event can be fired from
|
|
* multiple places in the user or library code, which may or may not be inside an ISR, thus each handler
|
|
* should be written to be as small and fast as possible to prevent possible problems.
|
|
*
|
|
* Events can be hooked by the user application by declaring a handler function with the same name and parameters
|
|
* listed here. If an event with no user-associated handler is fired within the library, it by default maps to an
|
|
* internal empty stub function.
|
|
*
|
|
* Each event must only have one associated event handler, but can be raised by multiple sources by calling the
|
|
* event handler function (with any required event parameters).
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef __USBEVENTS_H__
|
|
#define __USBEVENTS_H__
|
|
|
|
/* Includes: */
|
|
#include <avr/io.h>
|
|
|
|
#include "../../../Common/Common.h"
|
|
#include "USBMode.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.h instead.
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Pseudo-Functions for Doxygen: */
|
|
#if !defined(__INCLUDE_FROM_EVENTS_C) || defined(__DOXYGEN__)
|
|
/** Event for USB stack initialization failure. This event fires when the USB interface fails to
|
|
* initialize correctly due to a hardware or software fault.
|
|
*
|
|
* \note This event only exists on USB AVR models which support dual role modes.
|
|
*
|
|
* \param[in] ErrorCode Error code indicating the failure reason, a value in \ref USB_InitErrorCodes_t
|
|
*/
|
|
void EVENT_USB_InitFailure(const uint8_t ErrorCode);
|
|
|
|
/** Event for USB mode pin level change. This event fires when the USB interface is set to dual role
|
|
* mode, and the UID pin level has changed to indicate a new mode (device or host). This event fires
|
|
* before the mode is switched to the newly indicated mode but after the \ref EVENT_USB_Device_Disconnect
|
|
* event has fired (if connected before the role change).
|
|
*
|
|
* \note This event only exists on USB AVR models which support dual role modes.
|
|
*
|
|
* \note This event does not exist if the USB_DEVICE_ONLY or USB_HOST_ONLY tokens have been supplied
|
|
* to the compiler (see \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_UIDChange(void);
|
|
|
|
/** Event for USB host error. This event fires when a hardware fault has occurred whilst the USB
|
|
* interface is in host mode.
|
|
*
|
|
* \param[in] ErrorCode Error code indicating the failure reason, a value in \ref USB_Host_ErrorCodes_t
|
|
*
|
|
* \note This event only exists on USB AVR models which supports host mode.
|
|
*
|
|
* \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_Host_HostError(const uint8_t ErrorCode);
|
|
|
|
/** Event for USB device attachment. This event fires when a the USB interface is in host mode, and
|
|
* a USB device has been connected to the USB interface. This is interrupt driven, thus fires before
|
|
* the standard \ref EVENT_USB_Device_Connect() event and so can be used to programmatically start the USB
|
|
* management task to reduce CPU consumption.
|
|
*
|
|
* \note This event only exists on USB AVR models which supports host mode.
|
|
*
|
|
* \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*
|
|
* \see \ref USB_USBTask() for more information on the USB management task and reducing CPU usage.
|
|
*/
|
|
void EVENT_USB_Host_DeviceAttached(void);
|
|
|
|
/** Event for USB device removal. This event fires when a the USB interface is in host mode, and
|
|
* a USB device has been removed the USB interface whether or not it has been enumerated. This
|
|
* can be used to programmatically stop the USB management task to reduce CPU consumption.
|
|
*
|
|
* \note This event only exists on USB AVR models which supports host mode.
|
|
*
|
|
* \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*
|
|
* \see \ref USB_USBTask() for more information on the USB management task and reducing CPU usage.
|
|
*/
|
|
void EVENT_USB_Host_DeviceUnattached(void);
|
|
|
|
/** Event for USB device enumeration failure. This event fires when a the USB interface is
|
|
* in host mode, and an attached USB device has failed to enumerate completely.
|
|
*
|
|
* \param[in] ErrorCode Error code indicating the failure reason, a value in
|
|
* \ref USB_Host_EnumerationErrorCodes_t
|
|
*
|
|
* \param[in] SubErrorCode Sub error code indicating the reason for failure - for example, if the
|
|
* ErrorCode parameter indicates a control error, this will give the error
|
|
* code returned by the \ref USB_Host_SendControlRequest() function.
|
|
*
|
|
* \note This event only exists on USB AVR models which supports host mode.
|
|
*
|
|
* \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode);
|
|
|
|
/** Event for USB device enumeration completion. This event fires when a the USB interface is
|
|
* in host mode and an attached USB device has been completely enumerated and is ready to be
|
|
* controlled by the user application.
|
|
*
|
|
* This event is time-critical; exceeding OS-specific delays within this event handler (typically of around
|
|
* 1 second) when a transaction is waiting to be processed by the device will prevent break communications
|
|
* and cause the host to reset the USB bus.
|
|
*/
|
|
void EVENT_USB_Host_DeviceEnumerationComplete(void);
|
|
|
|
/** Event for USB device connection. This event fires when the AVR in device mode and the device is connected
|
|
* to a host, beginning the enumeration process, measured by a rising level on the AVR's VBUS pin.
|
|
*
|
|
* This event is time-critical; exceeding OS-specific delays within this event handler (typically of around
|
|
* two seconds) will prevent the device from enumerating correctly.
|
|
*
|
|
* \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
|
|
* this means that the current connection state is derived from the bus suspension and wake up events by default,
|
|
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
|
|
* needs to be determined, VBUS should be routed to an external pin, and the auto-detect behaviour turned off by
|
|
* passing the NO_LIMITED_CONTROLLER_CONNECT token to the compiler via the -D switch at compile time. The connection
|
|
* and disconnection events may be manually fired, and the \ref USB_DeviceState global changed manually.
|
|
*
|
|
* \note This event may fire multiple times during device enumeration on the series 2 USB AVRs with limited USB controllers
|
|
* if NO_LIMITED_CONTROLLER_CONNECT is not defined.
|
|
*
|
|
* \see USBTask.h for more information on the USB management task and reducing CPU usage.
|
|
*/
|
|
void EVENT_USB_Device_Connect(void);
|
|
|
|
/** Event for USB device disconnection. This event fires when the AVR in device mode and the device is disconnected
|
|
* from a host, measured by a falling level on the AVR's VBUS pin.
|
|
*
|
|
* \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
|
|
* this means that the current connection state is derived from the bus suspension and wake up events by default,
|
|
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
|
|
* needs to be determined, VBUS should be routed to an external pin, and the auto-detect behaviour turned off by
|
|
* passing the NO_LIMITED_CONTROLLER_CONNECT token to the compiler via the -D switch at compile time. The connection
|
|
* and disconnection events may be manually fired, and the \ref USB_DeviceState global changed manually.
|
|
*
|
|
* \note This event may fire multiple times during device enumeration on the series 2 USB AVRs with limited USB controllers
|
|
* if NO_LIMITED_CONTROLLER_CONNECT is not defined.
|
|
*
|
|
* \see USBTask.h for more information on the USB management task and reducing CPU usage.
|
|
*/
|
|
void EVENT_USB_Device_Disconnect(void);
|
|
|
|
/** Event for unhandled control requests. This event fires when a the USB host issues a control
|
|
* request to the control endpoint (address 0) that the library does not handle. This may either
|
|
* be a standard request that the library has no handler code for, or a class specific request
|
|
* issued to the device which must be handled appropriately.
|
|
*
|
|
* This event is time-critical; each packet within the request transaction must be acknowledged or
|
|
* sent within 50ms or the host will abort the transfer.
|
|
*
|
|
* The library interally handles all standard control requests with the exceptions of SYNC FRAME,
|
|
* SET DESCRIPTOR and SET INTERFACE. These and all other non-standard control requests will be left
|
|
* for the user to process via this event if desired. If not handled in the user application, requests
|
|
* are automatically STALLed.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*
|
|
* \note Requests should be handled in the same manner as described in the USB 2.0 Specification,
|
|
* or appropriate class specification. In all instances, the library has already read the
|
|
* request SETUP parameters into the \ref USB_ControlRequest structure which should then be used
|
|
* by the application to determine how to handle the issued request.
|
|
*/
|
|
void EVENT_USB_Device_UnhandledControlRequest(void);
|
|
|
|
/** Event for USB configuration number changed. This event fires when a the USB host changes the
|
|
* selected configuration number while in device mode. This event should be hooked in device
|
|
* applications to create the endpoints and configure the device for the selected configuration.
|
|
*
|
|
* This event is time-critical; exceeding OS-specific delays within this event handler (typically of around
|
|
* one second) will prevent the device from enumerating correctly.
|
|
*
|
|
* This event fires after the value of \ref USB_ConfigurationNumber has been changed.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_Device_ConfigurationChanged(void);
|
|
|
|
/** Event for USB suspend. This event fires when a the USB host suspends the device by halting its
|
|
* transmission of Start Of Frame pulses to the device. This is generally hooked in order to move
|
|
* the device over to a low power state until the host wakes up the device. If the USB interface is
|
|
* enumerated with the \ref USB_OPT_AUTO_PLL option set, the library will automatically suspend the
|
|
* USB PLL before the event is fired to save power.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*
|
|
* \note This event does not exist on the series 2 USB AVRs when the NO_LIMITED_CONTROLLER_CONNECT
|
|
* compile time token is not set - see \ref EVENT_USB_Device_Disconnect.
|
|
*
|
|
* \see \ref EVENT_USB_Device_WakeUp() event for accompanying Wake Up event.
|
|
*/
|
|
void EVENT_USB_Device_Suspend(void);
|
|
|
|
/** Event for USB wake up. This event fires when a the USB interface is suspended while in device
|
|
* mode, and the host wakes up the device by supplying Start Of Frame pulses. This is generally
|
|
* hooked to pull the user application out of a low power state and back into normal operating
|
|
* mode. If the USB interface is enumerated with the \ref USB_OPT_AUTO_PLL option set, the library
|
|
* will automatically restart the USB PLL before the event is fired.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*
|
|
* \note This event does not exist on the series 2 USB AVRs when the NO_LIMITED_CONTROLLER_CONNECT
|
|
* compile time token is not set - see \ref EVENT_USB_Device_Connect.
|
|
*
|
|
* \see \ref EVENT_USB_Device_Suspend() event for accompanying Suspend event.
|
|
*/
|
|
void EVENT_USB_Device_WakeUp(void);
|
|
|
|
/** Event for USB interface reset. This event fires when the USB interface is in device mode, and
|
|
* a the USB host requests that the device reset its interface. This event fires after the control
|
|
* endpoint has been automatically configured by the library.
|
|
*
|
|
* This event is time-critical; exceeding OS-specific delays within this event handler (typically of around
|
|
* two seconds) will prevent the device from enumerating correctly.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_Device_Reset(void);
|
|
|
|
/** Event for USB Start Of Frame detection, when enabled. This event fires at the start of each USB
|
|
* frame, once per millisecond, and is synchronized to the USB bus. This can be used as an accurate
|
|
* millisecond timer source when the USB bus is enumerated in device mode to a USB host.
|
|
*
|
|
* This event is time-critical; it is run once per millisecond and thus long handlers will significantly
|
|
* degrade device performance. This event should only be enabled when needed to reduce device wakeups.
|
|
*
|
|
* \note This event is not normally active - it must be manually enabled and disabled via the
|
|
* \ref USB_Device_EnableSOFEvents() and \ref USB_Device_DisableSOFEvents() commands after enumeration.
|
|
*
|
|
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
|
|
* \ref Group_USBManagement documentation).
|
|
*/
|
|
void EVENT_USB_Device_StartOfFrame(void);
|
|
#endif
|
|
|
|
/* Private Interface - For use in library only: */
|
|
#if !defined(__DOXYGEN__)
|
|
/* Function Prototypes: */
|
|
#if defined(__INCLUDE_FROM_EVENTS_C)
|
|
void USB_Event_Stub(void) ATTR_CONST;
|
|
|
|
#if defined(USB_CAN_BE_BOTH)
|
|
void EVENT_USB_InitFailure(const uint8_t ErrorCode) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_UIDChange(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
#endif
|
|
|
|
#if defined(USB_CAN_BE_HOST)
|
|
void EVENT_USB_Host_HostError(const uint8_t ErrorCode) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Host_DeviceAttached(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Host_DeviceUnattached(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Host_DeviceEnumerationComplete(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
|
|
ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
#endif
|
|
|
|
#if defined(USB_CAN_BE_DEVICE)
|
|
void EVENT_USB_Device_Connect(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_Disconnect(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_UnhandledControlRequest(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_ConfigurationChanged(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_Suspend(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_WakeUp(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_Reset(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
void EVENT_USB_Device_StartOfFrame(void) ATTR_WEAK ATTR_ALIAS(USB_Event_Stub);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|