1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/** \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.
*
*
* \section Sec_SummaryNonUSBTokens Non USB Related Tokens
* This section describes compile tokens which affect non-USB sections of the LUFA library.
*
* <b>DISABLE_TERMINAL_CODES</b> - ( \ref Group_Terminal ) \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_SummaryUSBClassTokens USB Class Driver Related Tokens
* This section describes compile tokens which affect USB class-specific drivers in the LUFA library.
*
* <b>HID_HOST_BOOT_PROTOCOL_ONLY</b> - ( \ref Group_USBClassHIDHost ) \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().
*
* <b>HID_STATETABLE_STACK_DEPTH</b>=<i>x</i> - ( \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
* 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.
*
* <b>HID_USAGE_STACK_DEPTH</b>=<i>x</i> - ( \ref Group_HIDParser ) \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.
*
* <b>HID_MAX_COLLECTIONS</b>=<i>x</i> - ( \ref Group_HIDParser ) \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.
*
* <b>HID_MAX_REPORTITEMS</b>=<i>x</i> - ( \ref Group_HIDParser ) \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.
*
* <b>HID_MAX_REPORT_IDS</b>=<i>x</i> - ( \ref Group_HIDParser ) \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.
*
* <b>NO_CLASS_DRIVER_AUTOFLUSH</b>
* 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.
*
* <b>ORDERED_EP_CONFIG</b> - ( \ref Group_EndpointManagement , \ref Group_PipeManagement )\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 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.
*
* <b>NO_STREAM_CALLBACKS</b> - ( \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.
*
* <b>USE_STATIC_OPTIONS</b>=<i>x</i> - ( \ref Group_USBManagement ) \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.
*
* <b>USB_DEVICE_ONLY</b> - ( \ref Group_USBManagement ) \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.
*
* <b>USB_HOST_ONLY</b> - ( \ref Group_USBManagement ) \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.
*
* <b>USB_STREAM_TIMEOUT_MS</b>=<i>x</i> - ( \ref Group_USBManagement ) \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.
*
* <b>NO_LIMITED_CONTROLLER_CONNECT</b> - ( \ref Group_Events ) \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 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 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.
*
* <b>NO_SOF_EVENTS</b> - ( \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.
*
* <b>USE_RAM_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \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.
*
* <b>USE_FLASH_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \n
* Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's FLASH memory rather than RAM.
*
* <b>USE_EEPROM_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \n
* Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's EEPROM memory rather than RAM.
*
* <b>NO_INTERNAL_SERIAL</b> - ( \ref Group_Descriptors ) \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
* code that performs this task can be disabled by defining this option and passing it to the compiler via the -D switch.
*
* <b>FIXED_CONTROL_ENDPOINT_SIZE</b>=<i>x</i> - ( \ref Group_EndpointManagement ) \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.
*
* <b>DEVICE_STATE_AS_GPIOR</b> - ( \ref Group_Device ) \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.
*
* <b>FIXED_NUM_CONFIGURATIONS</b>=<i>x</i> - ( \ref Group_Device ) \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.
*
* <b>CONTROL_ONLY_DEVICE</b> \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.
*
* <b>INTERRUPT_CONTROL_ENDPOINT</b> - ( \ref Group_USBManagement ) \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.
*
* <b>NO_DEVICE_REMOTE_WAKEUP</b> - (\ref Group_Device ) \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.
*
* <b>NO_DEVICE_SELF_POWER</b> - (\ref Group_Device ) \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_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_SummaryUSBHostTokens 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.
*
* <b>HOST_STATE_AS_GPIOR</b> - ( \ref Group_Host ) \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.
*
* <b>USB_HOST_TIMEOUT_MS</b>=<i>x</i> - ( \ref Group_Host ) \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.
*
* <b>HOST_DEVICE_SETTLE_DELAY_MS</b>=<i>x</i> - ( \ref Group_Host ) \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.
*/
|
