X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/711542ee8986482a12796ffdbc4a32912b267e44..b6a3c78fa3e46fea1dd6f4b93352686837983dfd:/LUFA/ManPages/CompileTimeTokens.txt diff --git a/LUFA/ManPages/CompileTimeTokens.txt b/LUFA/ManPages/CompileTimeTokens.txt index 6f2e804ad..f215ffec1 100644 --- a/LUFA/ManPages/CompileTimeTokens.txt +++ b/LUFA/ManPages/CompileTimeTokens.txt @@ -7,7 +7,7 @@ /** \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 behavior, + * 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. * * @@ -30,7 +30,7 @@ * 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(). - * + * * HID_STATETABLE_STACK_DEPTH=x - ( \ref Group_HIDParser ) \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 @@ -67,27 +67,23 @@ * 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. * + * NO_CLASS_DRIVER_AUTOFLUSH + * 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_SummaryUSBTokens General USB Driver Related Tokens * This section describes compile tokens which affect USB driver stack as a whole in the LUFA library. * - * NO_STREAM_CALLBACKS - ( \ref Group_EndpointPacketManagement , \ref Group_PipePacketManagement )\n - * Both the endpoint and the pipe driver code contains stream functions, allowing for arrays of data to be sent to or from the - * host easily via a single function call (rather than complex routines worrying about sending full packets, waiting for the endpoint/ - * pipe to become ready, etc.). By default, these stream functions require a callback function which is executed after each byte processed, - * allowing for early-aborts of stream transfers by the application. If callbacks are not required in an application, they can be removed - * by defining this token, reducing the compiled binary size. When removed, the stream functions no longer accept a callback function as - * a parameter. - * - * FAST_STREAM_TRANSFERS - ( \ref Group_EndpointPacketManagement , \ref Group_PipePacketManagement )\n - * By default, streams are transferred internally via a loop, sending or receiving one byte per iteration before checking for a bank full - * or empty condition. This allows for multiple stream functions to be chained together easily, as there are no alignment issues. However, - * this can lead to heavy performance penalties in applications where large streams are used frequently. When this compile time option is - * used, bytes are sent or received in groups of 8 bytes at a time increasing performance at the expense of a larger flash memory consumption - * due to the extra code required to deal with byte alignment. + * ORDERED_EP_CONFIG - ( \ref Group_EndpointManagement , \ref Group_PipeManagement )\n + * The USB AVRs do not allow for Endpoints and Pipes to be configured out of order; they must be configured in an ascending order to + * prevent data corruption issues. However, by default LUFA employs a workaround to allow for unordered Endpoint/Pipe initialisation. This compile + * time token may be used to restrict the intialisation order to ascending indexes only in exchange for a smaller compiled binary size. * * USE_STATIC_OPTIONS=x - ( \ref Group_USBManagement ) \n - * By default, the USB_Init() function accepts dynamic options at runtime to alter the library behavior, including whether the USB pad + * 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 @@ -115,21 +111,26 @@ * can be accurately set and the \ref EVENT_USB_Device_Connect() and \ref EVENT_USB_Device_Disconnect() events manually raised by the RAISE_EVENT macro. * When defined, this token disables the library's auto-detection of the connection state by the aforementioned suspension and wake up events. * + * NO_SOF_EVENTS - ( \ref Group_Events ) \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_SummaryUSBDeviceTokens 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. * - * USE_RAM_DESCRIPTORS - ( \ref Group_Descriptors ) \n + * USE_RAM_DESCRIPTORS - ( \ref Group_StdDescriptors ) \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. * - * USE_FLASH_DESCRIPTORS - ( \ref Group_Descriptors ) \n + * USE_FLASH_DESCRIPTORS - ( \ref Group_StdDescriptors ) \n * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's FLASH memory rather than RAM. * - * USE_EEPROM_DESCRIPTORS - ( \ref Group_Descriptors ) \n + * USE_EEPROM_DESCRIPTORS - ( \ref Group_StdDescriptors ) \n * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's EEPROM memory rather than RAM. * - * NO_INTERNAL_SERIAL - ( \ref Group_Descriptors ) \n + * NO_INTERNAL_SERIAL - ( \ref Group_StdDescriptors ) \n * Some AVR models contain a unique 20-digit 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 @@ -198,3 +199,4 @@ * 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. */ +