/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
+ Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 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
*/
/** \file
- * \brief USB controller events manager.
- *
- * This file 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).
+ * \brief USB Event management definitions.
+ * \copydetails Group_Events
*
* \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_USB
* \defgroup Group_Events USB Events
+ * \brief USB Event management definitions.
*
* 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
/** 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).
+ * event has fired (if disconnected before the role change).
*
* \note This event only exists on microcontrollers that support dual role USB modes.
* \n\n
* 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.
+ * \attention This event may fire multiple times during device enumeration on the microcontrollers with limited USB controllers
+ * if \c NO_LIMITED_CONTROLLER_CONNECT is not defined.
+ *
+ * \note For the microcontrollers with limited USB controller functionality, VBUS sensing is not available.
* 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
+ * needs to be determined, VBUS should be routed to an external pin, and the auto-detect behavior turned off by
* passing the \c 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.
* \n\n
*
- * \note This event may fire multiple times during device enumeration on the microcontrollers with limited USB controllers
- * if \c NO_LIMITED_CONTROLLER_CONNECT is not defined.
- *
* \see \ref Group_USBManagement 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 microcontroller is in USB Device mode and the device is
* disconnected from a host, measured by a falling level on the microcontroller's VBUS sense pin.
*
+ * \attention This event may fire multiple times during device enumeration on the microcontrollers with limited USB controllers
+ * if \c NO_LIMITED_CONTROLLER_CONNECT is not defined.
+ *
* \note For the microcontrollers with limited USB controllers, VBUS sense 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
+ * needs to be determined, VBUS should be routed to an external pin, and the auto-detect behavior turned off by
* passing the \c 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.
* \n\n
*
- * \note This event may fire multiple times during device enumeration on the microcontrollers with limited USB controllers
- * if \c NO_LIMITED_CONTROLLER_CONNECT is not defined.
- *
* \see \ref Group_USBManagement for more information on the USB management task and reducing CPU usage.
*/
void EVENT_USB_Device_Disconnect(void);
/** Event for control requests. This event fires when a the USB host issues a control request
- * to the mandatory device control endpoint (of address 0). This may either be a standard
+ * to the mandatory device control endpoint (of address 0). This may either be a standard
* request that the library may have a handler code for internally, or a class specific request
* issued to the device which must be handled appropriately. If a request is not processed in the
* user application via this event, it will be passed to the library for processing internally
* 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.
+ * This event fires after the value of \ref USB_Device_ConfigurationNumber has been changed.
*
* \note This event does not exist if the \c USB_HOST_ONLY token is supplied to the compiler (see
* \ref Group_USBManagement documentation).
projects / pub / USBasp.git / blobdiff