X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/e53c120a2240549d42d98be92f25d6e92caeab0a..d03d6513d0d24cf63225c8d3dfa07675d9107f40:/LUFA/Drivers/USB/HighLevel/Events.h diff --git a/LUFA/Drivers/USB/HighLevel/Events.h b/LUFA/Drivers/USB/HighLevel/Events.h index 1e03e7b48..8daa8ea2b 100644 --- a/LUFA/Drivers/USB/HighLevel/Events.h +++ b/LUFA/Drivers/USB/HighLevel/Events.h @@ -1,21 +1,21 @@ /* LUFA Library - Copyright (C) Dean Camera, 2009. + Copyright (C) Dean Camera, 2010. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ /* - Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) - Permission to use, copy, modify, and distribute this software - and its documentation for any purpose and without fee is hereby - granted, 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 + 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 @@ -28,6 +28,25 @@ this software. */ +/** \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). + * + * \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 * @@ -40,8 +59,8 @@ * 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 - * name just like any regular C function (with any required event parameters). + * 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). * * @{ */ @@ -60,9 +79,14 @@ 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 + /* Public Interface - May be used in end-application: */ /* Pseudo-Functions for Doxygen: */ - #if !defined(INCLUDE_FROM_EVENTS_C) || defined(__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. * @@ -78,6 +102,7 @@ * event has fired (if connected before the role change). * * \note This event only exists on USB AVR models which support dual role modes. + * \n\n * * \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). @@ -90,6 +115,7 @@ * \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. + * \n\n * * \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). @@ -102,6 +128,7 @@ * management task to reduce CPU consumption. * * \note This event only exists on USB AVR models which supports host mode. + * \n\n * * \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). @@ -115,6 +142,7 @@ * 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. + * \n\n * * \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). @@ -134,6 +162,7 @@ * code returned by the \ref USB_Host_SendControlRequest() function. * * \note This event only exists on USB AVR models which supports host mode. + * \n\n * * \note This event does not exist if the USB_DEVICE_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). @@ -162,6 +191,7 @@ * 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. + * \n\n * * \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. @@ -179,6 +209,7 @@ * 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. + * \n\n * * \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. @@ -192,11 +223,17 @@ * 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; eack packet within the request transaction must be acknowedged or + * 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). + * \n\n * * \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 @@ -227,6 +264,10 @@ * * \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). + * \n\n + * + * \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. */ @@ -234,12 +275,16 @@ /** 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 lowe power state and back into normal operating + * 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). + * \n\n + * + * \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. */ @@ -258,7 +303,7 @@ 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 synchronised to the USB bus. This can be used as an accurate + * 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 @@ -266,6 +311,7 @@ * * \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. + * \n\n * * \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see * \ref Group_USBManagement documentation). @@ -276,7 +322,7 @@ /* Private Interface - For use in library only: */ #if !defined(__DOXYGEN__) /* Function Prototypes: */ - #if defined(INCLUDE_FROM_EVENTS_C) + #if defined(__INCLUDE_FROM_EVENTS_C) void USB_Event_Stub(void) ATTR_CONST; #if defined(USB_CAN_BE_BOTH)