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diff --git a/lib/lufa/LUFA/DoxygenPages/CompileTimeTokens.txt b/lib/lufa/LUFA/DoxygenPages/CompileTimeTokens.txt new file mode 100644 index 000000000..92adf0dcc --- /dev/null +++ b/lib/lufa/LUFA/DoxygenPages/CompileTimeTokens.txt @@ -0,0 +1,223 @@ +/** \file + * + * This file contains special DoxyGen information for the generation of the main page and other special + * documentation pages. It is not a project source file. + */ + +/** \page Page_TokenSummary Summary of Compile Tokens + * + * The following lists all the possible tokens which can be defined in a project makefile, and passed to the + * compiler via the -D switch, to alter the LUFA library code. These tokens may alter the library behaviour, + * or remove features unused by a given application in order to save flash space. + * + * \note If the \c USE_LUFA_CONFIG_HEADER token is defined, the library will include a header file named \c LUFAConfig.h located + * in the user directory where the below compile time tokens may be defined. This allows for an alternative to makefile + * defined tokens for configuring the library. + * + * \section Sec_TokenSummary_NonUSBTokens Non USB Related Tokens + * This section describes compile tokens which affect non-USB sections of the LUFA library. + * + * \li <b>DISABLE_TERMINAL_CODES</b> - (\ref Group_Terminal) - <i>All Architectures</i> \n + * If an application contains ANSI terminal control codes listed in TerminalCodes.h, it might be desired to remove them + * at compile time for use with a terminal which is non-ANSI control code aware, without modifying the source code. If + * this token is defined, all ANSI control codes in the application code from the TerminalCodes.h header are removed from + * the source code at compile time. + * + * + * \section Sec_TokenSummary_USBClassTokens USB Class Driver Related Tokens + * This section describes compile tokens which affect USB class-specific drivers in the LUFA library. + * + * \li <b>HID_HOST_BOOT_PROTOCOL_ONLY</b> - (\ref Group_USBClassHIDHost) - <i>All Architectures</i> \n + * By default, the USB HID Host class driver is designed to work with HID devices using either the Boot or Report HID + * communication protocols. On devices where the Report protocol is not used (i.e. in applications where only basic + * Mouse or Keyboard operation is desired, using boot compatible devices), the code responsible for the Report protocol + * mode can be removed to save space in the compiled application by defining this token. When defined, it is still necessary + * to explicitly put the attached device into Boot protocol mode via a call to \ref HID_Host_SetBootProtocol(). + * + * \li <b>HID_STATETABLE_STACK_DEPTH</b>=<i>x</i> - (\ref Group_HIDParser) - <i>All Architectures</i> \n + * HID reports may contain PUSH and POP elements, to store and retrieve the current HID state table onto a stack. This + * allows for reports to save the state table before modifying it slightly for a data item, and then restore the previous + * state table in a compact manner. This token may be defined to a non-zero 8-bit value to give the maximum depth of the state + * table stack. If not defined, this defaults to the value indicated in the HID.h file documentation. + * + * \li <b>HID_USAGE_STACK_DEPTH</b>=<i>x</i> - (\ref Group_HIDParser) - <i>All Architectures</i> \n + * HID reports generally contain many USAGE elements, which are assigned to INPUT, OUTPUT and FEATURE items in succession + * when multiple items are defined at once (via REPORT COUNT elements). This allows for several items to be defined with + * different usages in a compact manner. This token may be defined to a non-zero 8-bit value to set the maximum depth of the + * usage stack, indicating the maximum number of USAGE items which can be stored temporarily until the next INPUT, OUTPUT + * and FEATURE item. If not defined, this defaults to the value indicated in the HID.h file documentation. + * + * \li <b>HID_MAX_COLLECTIONS</b>=<i>x</i> - (\ref Group_HIDParser) - <i>All Architectures</i> \n + * HID reports generally contain several COLLECTION elements, used to group related data items together. Collection information + * is stored separately in the processed usage structure (and referred to by the data elements in the structure) to save space. + * This token may be defined to a non-zero 8-bit value to set the maximum number of COLLECTION items which can be processed by the + * parser into the resultant processed report structure. If not defined, this defaults to the value indicated in the HID.h file + * documentation. + * + * \li <b>HID_MAX_REPORTITEMS</b>=<i>x</i> - (\ref Group_HIDParser) - <i>All Architectures</i> \n + * All HID reports contain one or more INPUT, OUTPUT and/or FEATURE items describing the data which can be sent to and from the HID + * device. Each item has associated usages, bit offsets in the item reports and other associated data indicating the manner in which + * the report data should be interpreted by the host. This token may be defined to a non-zero 8-bit value to set the maximum number of + * data elements which can be stored in the processed HID report structure, including INPUT, OUTPUT and (if enabled) FEATURE items. + * If a item has a multiple count (i.e. a REPORT COUNT of more than 1), each item in the report count is placed separately in the + * processed HID report table. If not defined, this defaults to the value indicated in the HID.h file documentation. + * + * \li <b>HID_MAX_REPORT_IDS</b>=<i>x</i> - (\ref Group_HIDParser) - <i>All Architectures</i> \n + * HID reports may contain several report IDs, to logically distinguish grouped device data from one another - for example, a combination + * keyboard and mouse might use report IDs to separate the keyboard reports from the mouse reports. In order to determine the size of each + * report, and thus know how many bytes must be read or written, the size of each report (IN, OUT and FEATURE) must be calculated and + * stored. This token may be defined to a non-zero 8-bit value to set the maximum number of report IDs in a device which can be processed + * and their sizes calculated/stored into the resultant processed report structure. If not defined, this defaults to the value indicated in + * the HID.h file documentation. + * + * \li <b>NO_CLASS_DRIVER_AUTOFLUSH</b> - (\ref Group_USBClassDrivers) - <i>All Architectures</i> \n + * Many of the device and host mode class drivers automatically flush any data waiting to be written to an interface, when the corresponding + * USB management task is executed. This is usually desirable to ensure that any queued data is sent as soon as possible once and new data is + * constructed in the main program loop. However, if flushing is to be controlled manually by the user application via the *_Flush() commands, + * the compile time token may be defined in the application's makefile to disable automatic flushing during calls to the class driver USB + * management tasks. + * + * + * \section Sec_TokenSummary_USBTokens General USB Driver Related Tokens + * This section describes compile tokens which affect USB driver stack as a whole in the LUFA library. + * + * \li <b>ORDERED_EP_CONFIG</b> - (\ref Group_EndpointManagement , \ref Group_PipeManagement) - <i>AVR8, UC3</i> \n + * The USB AVRs do not allow for Endpoints and Pipes to be configured out of order; they <i>must</i> be configured in an ascending order to + * prevent data corruption issues. However, by default LUFA employs a workaround to allow for unordered Endpoint/Pipe initialization. This compile + * time token may be used to restrict the initialization order to ascending indexes only in exchange for a smaller compiled binary size. Use + * caution when applied to applications using the library USB Class drivers; the user application must ensure that all endpoints and pipes are + * allocated sequentially. + * + * \li <b>USE_STATIC_OPTIONS</b>=<i>x</i> - (\ref Group_USBManagement) - <i>All Architectures</i> \n + * By default, the USB_Init() function accepts dynamic options at runtime to alter the library behaviour, including whether the USB pad + * voltage regulator is enabled, and the device speed when in device mode. By defining this token to a mask comprised of the USB options + * mask defines usually passed as the Options parameter to USB_Init(), the resulting compiled binary can be decreased in size by removing + * the dynamic options code, and replacing it with the statically set options. When defined, the USB_Init() function no longer accepts an + * Options parameter. + * + * \li <b>USB_DEVICE_ONLY</b> - (\ref Group_USBManagement) - <i>All Architectures</i> \n + * For the USB AVR models supporting both device and host USB modes, the USB_Init() function contains a Mode parameter which specifies the + * mode the library should be initialized to. If only device mode is required, the code for USB host mode can be removed from the binary to + * save space. When defined, the USB_Init() function no longer accepts a Mode parameter. This define is irrelevant on smaller USB AVRs which + * do not support host mode. + * + * \li <b>USB_HOST_ONLY</b> - (\ref Group_USBManagement) - <i>All Architectures</i> \n + * Same as USB_DEVICE_ONLY, except the library is fixed to USB host mode rather than USB device mode. Not available on some USB AVR models. + * + * \li <b>USB_STREAM_TIMEOUT_MS</b>=<i>x</i> - (\ref Group_USBManagement) - <i>All Architectures</i> \n + * When endpoint and/or pipe stream functions are used, by default there is a timeout between each transfer which the connected device or host + * must satisfy, or the stream function aborts the remaining data transfer. This token may be defined to a non-zero 16-bit value to set the timeout + * period for stream transfers, specified in milliseconds. If not defined, the default value specified in LowLevel.h is used instead. + * + * \li <b>NO_LIMITED_CONTROLLER_CONNECT</b> - (\ref Group_Events) - <i>AVR8 Only</i> \n + * On the smaller USB AVRs, the USB controller lacks VBUS events to determine the physical connection state of the USB bus to a host. In lieu of + * VBUS events, the library attempts to determine the connection state via the bus suspension and wake up events instead. This however may be + * slightly inaccurate due to the possibility of the host suspending the bus while the device is still connected. If accurate connection status is + * required, the VBUS line of the USB connector should be routed to an AVR pin to detect its level, so that the \ref USB_DeviceState global + * can be accurately set and the \ref EVENT_USB_Device_Connect() and \ref EVENT_USB_Device_Disconnect() events manually raised by the user application. + * When defined, this token disables the library's auto-detection of the connection state by the aforementioned suspension and wake up events. + * + * \li <b>NO_SOF_EVENTS</b> - (\ref Group_Events) - <i>All Architectures</i> \n + * By default, there exists a LUFA application event for the start of each USB frame while the USB bus is not suspended in either host or device mode. + * This event can be selectively enabled or disabled by calling the appropriate device or host mode function. When this compile time token is defined, + * the ability to receive USB Start of Frame events via the \ref EVENT_USB_Device_StartOfFrame() or \ref EVENT_USB_Host_StartOfFrame() events is removed, + * reducing the compiled program's binary size. + * + * + * \section Sec_TokenSummary_USBDeviceTokens USB Device Mode Driver Related Tokens + * This section describes compile tokens which affect USB driver stack of the LUFA library when used in Device mode. + * + * \li <b>USE_RAM_DESCRIPTORS</b> - (\ref Group_StdDescriptors) - <i>AVR8 Only</i> \n + * Define this token to indicate to the USB driver that all device descriptors are stored in RAM, rather than being located in any one + * of the AVR's memory spaces. RAM descriptors may be desirable in applications where the descriptors need to be modified at runtime. + * + * \li <b>USE_FLASH_DESCRIPTORS</b> - (\ref Group_StdDescriptors) - <i>AVR8 Only</i> \n + * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's FLASH memory rather than RAM. + * + * \li <b>USE_EEPROM_DESCRIPTORS</b> - (\ref Group_StdDescriptors) - <i>AVR8 Only</i> \n + * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's EEPROM memory rather than RAM. + * + * \li <b>NO_INTERNAL_SERIAL</b> - (\ref Group_StdDescriptors) - <i>All Architectures</i> \n + * Some AVR models contain a unique serial number which can be used as the device serial number, while in device mode. This allows + * the host to uniquely identify the device regardless of if it is moved between USB ports on the same computer, allowing allocated + * resources (such as drivers, COM Port number allocations) to be preserved. This is not needed in many apps, and so the code that + * performs this task can be disabled by defining this option and passing it to the compiler via the -D switch. + * + * \li <b>FIXED_CONTROL_ENDPOINT_SIZE</b>=<i>x</i> - (\ref Group_EndpointManagement) - <i>All Architectures</i> \n + * By default, the library determines the size of the control endpoint (when in device mode) by reading the device descriptor. + * Normally this reduces the amount of configuration required for the library, allows the value to change dynamically (if + * descriptors are stored in EEPROM or RAM rather than flash memory) and reduces code maintenance. However, this token can be + * defined to a non-zero value instead to give the size in bytes of the control endpoint, to reduce the size of the compiled + * binary. + * + * \li <b>DEVICE_STATE_AS_GPIOR</b> - (\ref Group_Device) - <i>AVR8 Only</i> \n + * One of the most frequently used global variables in the stack is the USB_DeviceState global, which indicates the current state of + * the Device State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token + * may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR + * reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except + * implicitly via the library APIs. + * + * \li <b>FIXED_NUM_CONFIGURATIONS</b>=<i>x</i> - (\ref Group_Device) - <i>All Architectures</i> \n + * By default, the library determines the number of configurations a USB device supports by reading the device descriptor. This reduces + * the amount of configuration required to set up the library, and allows the value to change dynamically (if descriptors are stored in + * EEPROM or RAM rather than flash memory) and reduces code maintenance. However, this value may be fixed via this token in the project + * makefile to reduce the compiled size of the binary at the expense of flexibility. + * + * \li <b>CONTROL_ONLY_DEVICE</b> - (\ref Group_Device) - <i>All Architectures</i> \n + * In some limited USB device applications, there are no device endpoints other than the control endpoint; i.e. all device communication + * is through control endpoint requests. Defining this token will remove several features related to the selection and control of device + * endpoints internally, saving space. Generally, this is usually only useful in (some) bootloaders and is best avoided. + * + * \li <b>MAX_ENDPOINT_INDEX</b> - (\ref Group_Device) - <i>XMEGA Only</i> \n + * Defining this value to the highest index (not address - this excludes the direction flag) endpoint within the device will restrict the + * number of FIFOs created internally for the endpoint buffers, reducing the total RAM usage. + * + * \li <b>INTERRUPT_CONTROL_ENDPOINT</b> - (\ref Group_USBManagement) - <i>All Architectures</i> \n + * Some applications prefer to not call the USB_USBTask() management task regularly while in device mode, as it can complicate code significantly. + * Instead, when device mode is used this token can be passed to the library via the -D switch to allow the library to manage the USB control + * endpoint entirely via USB controller interrupts asynchronously to the user application. When defined, USB_USBTask() does not need to be called + * when in USB device mode. + * + * \li <b>NO_DEVICE_REMOTE_WAKEUP</b> - (\ref Group_Device) - <i>All Architectures</i> \n + * Many devices do not require the use of the Remote Wakeup features of USB, used to wake up the USB host when suspended. On these devices, + * the code required to manage device Remote Wakeup can be disabled by defining this token and passing it to the library via the -D switch. + * + * \li <b>NO_DEVICE_SELF_POWER</b> - (\ref Group_Device) - <i>All Architectures</i> \n + * USB devices may be bus powered, self powered, or a combination of both. When a device can be both bus powered and self powered, the host may + * query the device to determine the current power source, via \ref USB_Device_CurrentlySelfPowered. For solely bus powered devices, this global + * and the code required to manage it may be disabled by passing this token to the library via the -D switch. + * + * + * \section Sec_TokenSummary_USBHostTokens USB Host Mode Driver Related Tokens + * + * This section describes compile tokens which affect USB driver stack of the LUFA library when used in Host mode. + * + * \li <b>HOST_STATE_AS_GPIOR</b> - (\ref Group_Host) - <i>AVR8 Only</i> \n + * One of the most frequently used global variables in the stack is the USB_HostState global, which indicates the current state of + * the Host State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token + * may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR + * reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except + * implicitly via the library APIs. + * + * \li <b>USB_HOST_TIMEOUT_MS</b>=<i>x</i> - (\ref Group_Host) - <i>All Architectures</i> \n + * When a control transfer is initiated in host mode to an attached device, a timeout is used to abort the transfer if the attached + * device fails to respond within the timeout period. This token may be defined to a non-zero 16-bit value to set the timeout period for + * control transfers, specified in milliseconds. If not defined, the default value specified in Host.h is used instead. + * + * \li <b>HOST_DEVICE_SETTLE_DELAY_MS</b>=<i>x</i> - (\ref Group_Host) - <i>All Architectures</i> \n + * Some devices require a delay of up to 5 seconds after they are connected to VBUS before the enumeration process can be started, or + * they will fail to enumerate correctly. By placing a delay before the enumeration process, it can be ensured that the bus has settled + * back to a known idle state before communications occur with the device. This token may be defined to a 16-bit value to set the device + * settle period, specified in milliseconds. If not defined, the default value specified in Host.h is used instead. + * + * \li <b>INVERTED_VBUS_ENABLE_LINE</b> - (\ref Group_Host) - <i>All Architectures</i> \n + * If enabled, this will indicate that the USB target VBUS line polarity is inverted; i.e. it should be pulled low to enable VBUS to the + * target, and pulled high to stop the target VBUS generation. + * \n + * \attention On AVR8 architecture devices, this compile time option requires \c NO_AUTO_VBUS_MANAGEMENT to be set. + * + * \li <b>NO_AUTO_VBUS_MANAGEMENT</b> - (\ref Group_Host) - <i>All Architectures</i> \n + * Disables the automatic management of VBUS to the target, i.e. automatic shut down in the even of an overcurrent situation. When enabled, VBUS + * is enabled while the USB controller is initialized in USB Host mode. + */ + |