418 lines
20 KiB
C
418 lines
20 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2012.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all 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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* \brief Master include file for the library USB functionality.
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*
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* Master include file for the library USB functionality.
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*
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* This file should be included in all user projects making use of the USB portions of the library, instead of
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* the individual USB driver submodule headers.
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*/
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/** \defgroup Group_USB USB Core - LUFA/Drivers/USB/USB.h
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*
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* \section Sec_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - LUFA/Drivers/USB/Core/ConfigDescriptors.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/DeviceStandardReq.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/Events.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/HostStandardReq.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/USBTask.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/Device_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/Endpoint_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/EndpointStream_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/Host_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/Pipe_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/PipeStream_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/USBController_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Core/<i>ARCH</i>/USBInterrupt_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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* - LUFA/Drivers/USB/Class/Common/HIDParser.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
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*
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* \section Sec_ModDescription Module Description
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* Driver and framework for the USB controller of the selected architecture and microcontroller model. This module
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* consists of many submodules, and is designed to provide an easy way to configure and control USB host, device
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* or OTG mode USB applications.
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*
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* The USB stack requires the sole control over the USB controller in the microcontroller only; i.e. it does not
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* require any additional timers or other peripherals to operate. This ensures that the USB stack requires as few
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* resources as possible.
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*
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* The USB stack can be used in Device Mode for connections to USB Hosts (see \ref Group_Device), in Host mode for
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* hosting of other USB devices (see \ref Group_Host), or as a dual role device which can either act as a USB host
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* or device depending on what peripheral is connected (see \ref Group_OTG). Both modes also require a common set
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* of USB management functions found \ref Group_USBManagement.
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*/
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/** \defgroup Group_USBClassDrivers USB Class Drivers
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*
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* Drivers for both host and device mode of the standard USB classes, for rapid application development.
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* Class drivers give a framework which sits on top of the low level library API, allowing for standard
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* USB classes to be implemented in a project with minimal user code. These drivers can be used in
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* conjunction with the library low level APIs to implement interfaces both via the class drivers and via
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* the standard library APIs.
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*
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* Multiple device mode class drivers can be used within a project, including multiple instances of the
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* same class driver. In this way, USB Hosts and Devices can be made quickly using the internal class drivers
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* so that more time and effort can be put into the end application instead of the USB protocol.
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*
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* The available class drivers and their modes are listed below.
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*
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* <table>
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* <tr>
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* <th width="200px">USB Class</th>
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* <th width="90px">Device Mode</th>
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* <th width="90px">Host Mode</th>
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* </tr>
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* <tr>
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* <td>Android Open Accessory</td>
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* <td bgcolor="#EE0000">No</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>Audio 1.0</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>CDC-ACM</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>HID</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>MIDI</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>Mass Storage</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>Printer</td>
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* <td bgcolor="#EE0000">No</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>RNDIS</td>
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* <td bgcolor="#00EE00">Yes</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* <tr>
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* <td>Still Image</td>
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* <td bgcolor="#EE0000">No</td>
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* <td bgcolor="#00EE00">Yes</td>
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* </tr>
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* </table>
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*
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*
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* \section Sec_UsingClassDrivers Using the Class Drivers
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* To make the Class drivers easy to integrate into a user application, they all implement a standardized
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* design with similarly named/used function, enums, defines and types. The two different modes are implemented
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* slightly differently, and thus will be explained separately. For information on a specific class driver, read
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* the class driver's module documentation.
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*
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* \subsection Sec_ClassDriverDevice Device Mode Class Drivers
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* Implementing a Device Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
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* the module configuration and state structure must be added to the project source. These structures are named in a
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* similar manner between classes, that of <tt>USB_ClassInfo_<i>{Class Name}</i>_Device_t</tt>, and are used to hold the
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* complete state and configuration for each class instance. Multiple class instances is where the power of the class
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* drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's \c USB_ClassInfo_*
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* structure.
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*
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* Inside the ClassInfo structure lies two sections, a \c Config section, and a \c State section. The \c Config
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* section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
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* before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
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* for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
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*
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* The following is an example of a properly initialized instance of the Audio Class Driver structure:
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*
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* \code
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* USB_ClassInfo_Audio_Device_t My_Audio_Interface =
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* {
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* .Config =
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* {
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* .StreamingInterfaceNumber = 1,
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* .DataINEndpoint =
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* {
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* .Address = (ENDPOINT_DIR_IN | 1),
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* .Size = 64,
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* .Banks = 1,
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* },
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* },
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* };
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* \endcode
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*
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* \note The class driver's configuration parameters should match those used in the device's descriptors that are
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* sent to the host.
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*
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* To initialize the Class driver instance, the driver's <tt><i>{Class Name}</i>_Device_ConfigureEndpoints()</tt> function
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* should be called in response to the \ref EVENT_USB_Device_ConfigurationChanged() event. This function will return a
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* boolean true value if the driver successfully initialized the instance. Like all the class driver functions, this function
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* takes in the address of the specific instance you wish to initialize - in this manner, multiple separate instances of
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* the same class type can be initialized like this:
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*
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* \code
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* void EVENT_USB_Device_ConfigurationChanged(void)
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* {
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* LEDs_SetAllLEDs(LEDMASK_USB_READY);
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*
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* if (!(Audio_Device_ConfigureEndpoints(&My_Audio_Interface)))
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* LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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* }
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* \endcode
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*
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* Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's
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* <tt><i>{Class Name}</i>_Device_USBTask()</tt> function in the main program loop. The exact implementation of this
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* function varies between class drivers, and can be used for any internal class driver purpose to maintain each
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* instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
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* separate instance, just like the main USB maintenance routine \ref USB_USBTask():
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*
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* \code
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* int main(void)
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* {
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* SetupHardware();
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*
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* LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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*
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* for (;;)
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* {
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* if (USB_DeviceState != DEVICE_STATE_Configured)
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* Create_And_Process_Samples();
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*
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* Audio_Device_USBTask(&My_Audio_Interface);
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* USB_USBTask();
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* }
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* }
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* \endcode
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*
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* The final standardized Device Class Driver function is the Control Request handler function
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* <tt><i>{Class Name}</i>_Device_ProcessControlRequest()</tt>, which should be called when the
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* \ref EVENT_USB_Device_ControlRequest() event fires. This function should also be called for
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* each class driver instance, using the address of the instance to operate on as the function's
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* parameter. The request handler will abort if it is determined that the current request is not
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* targeted at the given class driver instance, thus these methods can safely be called
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* one-after-another in the event handler with no form of error checking:
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*
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* \code
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* void EVENT_USB_Device_ControlRequest(void)
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* {
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* Audio_Device_ProcessControlRequest(&My_Audio_Interface);
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* }
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* \endcode
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*
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* Each class driver may also define a set of callback functions (which are prefixed by \c CALLBACK_*
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* in the function's name) which <b>must</b> also be added to the user application - refer to each
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* individual class driver's documentation for mandatory callbacks. In addition, each class driver may
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* also define a set of events (identifiable by their prefix of \c EVENT_* in the function's name), which
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* the user application <b>may</b> choose to implement, or ignore if not needed.
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*
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* The individual Device Mode Class Driver documentation contains more information on the non-standardized,
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* class-specific functions which the user application can then use on the driver instances, such as data
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* read and write routines. See each driver's individual documentation for more information on the
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* class-specific functions.
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*
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* \subsection Sec_ClassDriverHost Host Mode Class Drivers
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* Implementing a Host Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
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* the module configuration and state structure must be added to the project source. These structures are named in a
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* similar manner between classes, that of <tt>USB_ClassInfo_<b>{Class Name}</b>_Host_t</tt>, and are used to hold the
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* complete state and configuration for each class instance. Multiple class instances is where the power of the class
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* drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's \c USB_ClassInfo_*
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* structure.
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*
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* Inside the \c USB_ClassInfo_* structure lies two sections, a \c Config section, and a \c State section. The \c Config
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* section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
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* before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
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* for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
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*
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* The following is an example of a properly initialized instance of the MIDI Host Class Driver structure:
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*
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* \code
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* USB_ClassInfo_MIDI_Host_t My_MIDI_Interface =
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* {
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* .Config =
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* {
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* .DataINPipe =
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* {
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* .Address = (PIPE_DIR_IN | 1),
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* .Size = 64,
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* .Banks = 1,
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* },
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* .DataOUTPipe =
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* {
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* .Address = (PIPE_DIR_OUT | 2),
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* .Size = 64,
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* .Banks = 1,
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* },
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* },
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* };
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* \endcode
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*
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* To initialize the Class driver instance, the driver's <tt><b>{Class Name}</b>_Host_ConfigurePipes()</tt> function
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* should be called in response to the \c EVENT_USB_Host_DeviceEnumerationComplete() event firing. This function will
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* will return an error code from the class driver's <tt><b>{Class Name}</b>_EnumerationFailure_ErrorCodes_t</tt> enum
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* to indicate if the driver successfully initialized the instance and bound it to an interface in the attached device.
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* Like all the class driver functions, this function takes in the address of the specific instance you wish to initialize -
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* in this manner, multiple separate instances of the same class type can be initialized. A fragment of a Class Driver
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* based Host mode application may look like the following:
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*
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* \code
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* void EVENT_USB_Host_DeviceEnumerationComplete(void)
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* {
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* LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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*
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* uint16_t ConfigDescriptorSize;
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* uint8_t ConfigDescriptorData[512];
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*
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* if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
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* sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
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* {
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* LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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* return;
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* }
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*
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* if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
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* ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
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* {
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* LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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* return;
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* }
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*
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* if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
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* {
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* LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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* return;
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* }
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*
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* LEDs_SetAllLEDs(LEDMASK_USB_READY);
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* }
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* \endcode
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*
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* Note that the function also requires the device's configuration descriptor so that it can determine which interface
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* in the device to bind to - this can be retrieved as shown in the above fragment using the
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* \ref USB_Host_GetDeviceConfigDescriptor() function. If the device does not implement the interface the class driver
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* is looking for, if all the matching interfaces are already bound to class driver instances or if an error occurs while
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* binding to a device interface (for example, a device endpoint bank larger that the maximum supported bank size is used)
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* the configuration will fail.
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*
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* To complete the device enumeration after binding the host mode Class Drivers to the attached device, a call to
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* \c USB_Host_SetDeviceConfiguration() must be made. If the device configuration is not set within the
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* \c EVENT_USB_Host_DeviceEnumerationComplete() event, the host still will assume the device enumeration has failed.
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*
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* Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's
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* <tt><b>{Class Name}</b>_Host_USBTask()</tt> function in the main program loop. The exact implementation of this
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* function varies between class drivers, and can be used for any internal class driver purpose to maintain each
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* instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
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* separate instance, just like the main USB maintenance routine \ref USB_USBTask():
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*
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* \code
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* int main(void)
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* {
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* SetupHardware();
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*
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* LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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*
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* for (;;)
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* {
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* if (USB_HostState != HOST_STATE_Configured)
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* Create_And_Process_Samples();
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*
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* MIDI_Host_USBTask(&My_Audio_Interface);
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* USB_USBTask();
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* }
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* }
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* \endcode
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*
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* Each class driver may also define a set of callback functions (which are prefixed by \c CALLBACK_*
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* in the function's name) which <b>must</b> also be added to the user application - refer to each
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* individual class driver's documentation for mandatory callbacks. In addition, each class driver may
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* also define a set of events (identifiable by their prefix of \c EVENT_* in the function's name), which
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* the user application <b>may</b> choose to implement, or ignore if not needed.
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*
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* The individual Host Mode Class Driver documentation contains more information on the non-standardized,
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* class-specific functions which the user application can then use on the driver instances, such as data
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* read and write routines. See each driver's individual documentation for more information on the
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* class-specific functions.
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*/
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#ifndef __USB_H__
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#define __USB_H__
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/* Macros: */
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#define __INCLUDE_FROM_USB_DRIVER
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/* Includes: */
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#include "../../Common/Common.h"
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#include "Core/USBMode.h"
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/* Includes: */
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#include "Core/USBTask.h"
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#include "Core/Events.h"
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#include "Core/StdDescriptors.h"
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#include "Core/ConfigDescriptors.h"
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#include "Core/USBController.h"
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#include "Core/USBInterrupt.h"
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#if defined(USB_CAN_BE_HOST) || defined(__DOXYGEN__)
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#include "Core/Host.h"
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#include "Core/Pipe.h"
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#include "Core/HostStandardReq.h"
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#include "Core/PipeStream.h"
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#endif
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#if defined(USB_CAN_BE_DEVICE) || defined(__DOXYGEN__)
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#include "Core/Device.h"
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#include "Core/Endpoint.h"
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#include "Core/DeviceStandardReq.h"
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#include "Core/EndpointStream.h"
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#endif
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#if defined(USB_CAN_BE_BOTH) || defined(__DOXYGEN__)
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#include "Core/OTG.h"
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#endif
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#include "Class/AndroidAccessoryClass.h"
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#include "Class/AudioClass.h"
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#include "Class/CDCClass.h"
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#include "Class/HIDClass.h"
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#include "Class/MassStorageClass.h"
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#include "Class/MIDIClass.h"
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#include "Class/PrinterClass.h"
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#include "Class/RNDISClass.h"
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#include "Class/StillImageClass.h"
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#endif
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