2 * Project: AVR USB driver
3 * Author: Christian Starkjohann
4 * Creation Date: 2005-04-01
6 * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
7 * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
8 * This Revision: $Id: usbconfig-prototype.h 692 2008-11-07 15:07:40Z cs $
11 #ifndef __usbconfig_h_included__
12 #define __usbconfig_h_included__
16 extern void usbEventResetReady(void);
18 #define USB_RESET_HOOK(isReset) if(!isReset){usbEventResetReady();}
22 This file is an example configuration (with inline documentation) for the USB
23 driver. It configures AVR-USB for USB D+ connected to Port D bit 2 (which is
24 also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
25 wire the lines to any other port, as long as D+ is also wired to INT0 (or any
26 other hardware interrupt, as long as it is the highest level interrupt, see
27 section at the end of this file).
30 /* ---------------------------- Hardware Config ---------------------------- */
32 #define USB_CFG_IOPORTNAME B
33 /* This is the port where the USB bus is connected. When you configure it to
34 * "B", the registers PORTB, PINB and DDRB will be used.
37 #define USB_CFG_DMINUS_BIT 0
38 /* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
39 * This may be any bit in the port.
41 #define USB_CFG_DPLUS_BIT 2
43 # define USB_CFG_DMINUS_BIT 3
44 # define USB_CFG_DPLUS_BIT 4
47 /* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
48 * This may be any bit in the port. Please note that D+ must also be connected
49 * to interrupt pin INT0! [You can also use other interrupts, see section
50 * "Optional MCU Description" below, or you can connect D- to the interrupt, as
51 * it is required if you use the USB_COUNT_SOF feature. If you use D- for the
52 * interrupt, the USB interrupt will also be triggered at Start-Of-Frame
53 * markers every millisecond.]
55 #define USB_CFG_CLOCK_KHZ (F_CPU/1000)
56 /* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
57 * 16500 and 20000. The 12.8 MHz and 16.5 MHz versions of the code require no
58 * crystal, they tolerate +/- 1% deviation from the nominal frequency. All
59 * other rates require a precision of 2000 ppm and thus a crystal!
60 * Default if not specified: 12 MHz
63 /* ----------------------- Optional Hardware Config ------------------------ */
65 /* #define USB_CFG_PULLUP_IOPORTNAME D */
66 /* If you connect the 1.5k pullup resistor from D- to a port pin instead of
67 * V+, you can connect and disconnect the device from firmware by calling
68 * the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
69 * This constant defines the port on which the pullup resistor is connected.
71 /* #define USB_CFG_PULLUP_BIT 4 */
72 /* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
73 * above) where the 1.5k pullup resistor is connected. See description
77 /* --------------------------- Functional Range ---------------------------- */
79 #define USB_CFG_HAVE_INTRIN_ENDPOINT 1
80 /* Define this to 1 if you want to compile a version with two endpoints: The
81 * default control endpoint 0 and an interrupt-in endpoint 1.
83 #define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
84 /* Define this to 1 if you want to compile a version with three endpoints: The
85 * default control endpoint 0, an interrupt-in endpoint 1 and an interrupt-in
86 * endpoint 3. You must also enable endpoint 1 above.
88 #define USB_CFG_IMPLEMENT_HALT 0
89 /* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
90 * for endpoint 1 (interrupt endpoint). Although you may not need this feature,
91 * it is required by the standard. We have made it a config option because it
92 * bloats the code considerably.
94 #define USB_CFG_INTR_POLL_INTERVAL 10
95 /* If you compile a version with endpoint 1 (interrupt-in), this is the poll
96 * interval. The value is in milliseconds and must not be less than 10 ms for
99 #define USB_CFG_IS_SELF_POWERED 0
100 /* Define this to 1 if the device has its own power supply. Set it to 0 if the
101 * device is powered from the USB bus.
103 #define USB_CFG_MAX_BUS_POWER 100
104 /* Set this variable to the maximum USB bus power consumption of your device.
105 * The value is in milliamperes. [It will be divided by two since USB
106 * communicates power requirements in units of 2 mA.]
108 #define USB_CFG_IMPLEMENT_FN_WRITE 1
109 /* Set this to 1 if you want usbFunctionWrite() to be called for control-out
110 * transfers. Set it to 0 if you don't need it and want to save a couple of
113 #define USB_CFG_IMPLEMENT_FN_READ 1
114 /* Set this to 1 if you need to send control replies which are generated
115 * "on the fly" when usbFunctionRead() is called. If you only want to send
116 * data from a static buffer, set it to 0 and return the data from
117 * usbFunctionSetup(). This saves a couple of bytes.
119 #define USB_CFG_IMPLEMENT_FN_WRITEOUT 0
120 /* Define this to 1 if you want to use interrupt-out (or bulk out) endpoint 1.
121 * You must implement the function usbFunctionWriteOut() which receives all
122 * interrupt/bulk data sent to endpoint 1.
124 #define USB_CFG_HAVE_FLOWCONTROL 0
125 /* Define this to 1 if you want flowcontrol over USB data. See the definition
126 * of the macros usbDisableAllRequests() and usbEnableAllRequests() in
129 #define USB_CFG_LONG_TRANSFERS 1
130 /* Define this to 1 if you want to send/receive blocks of more than 254 bytes
131 * in a single control-in or control-out transfer. Note that the capability
132 * for long transfers increases the driver size.
134 /* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
135 /* This macro is a hook if you want to do unconventional things. If it is
136 * defined, it's inserted at the beginning of received message processing.
137 * If you eat the received message and don't want default processing to
138 * proceed, do a return after doing your things. One possible application
139 * (besides debugging) is to flash a status LED on each packet.
141 /* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
142 /* This macro is a hook if you need to know when an USB RESET occurs. It has
143 * one parameter which distinguishes between the start of RESET state and its
146 /* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
147 /* This macro (if defined) is executed when a USB SET_ADDRESS request was
150 #define USB_COUNT_SOF 1
151 /* define this macro to 1 if you need the global variable "usbSofCount" which
152 * counts SOF packets. This feature requires that the hardware interrupt is
153 * connected to D- instead of D+.
155 /* #ifdef __ASSEMBLER__
156 * macro myAssemblerMacro
158 * sts timer0Snapshot, YL
161 * #define USB_SOF_HOOK myAssemblerMacro
162 * This macro (if defined) is executed in the assembler module when a
163 * Start Of Frame condition is detected. It is recommended to define it to
164 * the name of an assembler macro which is defined here as well so that more
165 * than one assembler instruction can be used. The macro may use the register
166 * YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
167 * immediately after an SOF pulse may be lost and must be retried by the host.
168 * What can you do with this hook? Since the SOF signal occurs exactly every
169 * 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
170 * designs running on the internal RC oscillator.
171 * Please note that Start Of Frame detection works only if D- is wired to the
172 * interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
174 #define USB_CFG_CHECK_DATA_TOGGLING 0
175 /* define this macro to 1 if you want to filter out duplicate data packets
176 * sent by the host. Duplicates occur only as a consequence of communication
177 * errors, when the host does not receive an ACK. Please note that you need to
178 * implement the filtering yourself in usbFunctionWriteOut() and
179 * usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
180 * for each control- and out-endpoint to check for duplicate packets.
182 #define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 1
183 /* define this macro to 1 if you want the function usbMeasureFrameLength()
184 * compiled in. This function can be used to calibrate the AVR's RC oscillator.
187 /* -------------------------- Device Description --------------------------- */
189 /* We cannot use Obdev's free shared VID/PID pair because this is a HID.
190 * We use John Hyde's VID (author of the book "USB Design By Example") for
191 * this example instead. John has offered this VID for use by students for
192 * non-commercial devices. Well... This example is for demonstration and
193 * education only... DO NOT LET DEVICES WITH THIS VID ESCAPE YOUR LAB!
194 * The Product-ID is a random number.
196 #define USB_CFG_VENDOR_ID 0x42, 0x42
197 /* USB vendor ID for the device, low byte first. If you have registered your
198 * own Vendor ID, define it here. Otherwise you use one of obdev's free shared
199 * VID/PID pairs. Be sure to read USBID-License.txt for rules!
201 #define USB_CFG_DEVICE_ID 0x31, 0xe1
202 /* This is the ID of the product, low byte first. It is interpreted in the
203 * scope of the vendor ID. If you have registered your own VID with usb.org
204 * or if you have licensed a PID from somebody else, define it here. Otherwise
205 * you use obdev's free shared VID/PID pair. Be sure to read the rules in
208 #define USB_CFG_DEVICE_VERSION 0x00, 0x01
209 /* Version number of the device: Minor number first, then major number.
211 #define USB_CFG_VENDOR_NAME 'd', 'a', 's', '-', 'l', 'a', 'b', 'o', 'r', '.', 'o', 'r', 'g'
212 #define USB_CFG_VENDOR_NAME_LEN 14
213 /* These two values define the vendor name returned by the USB device. The name
214 * must be given as a list of characters under single quotes. The characters
215 * are interpreted as Unicode (UTF-16) entities.
216 * If you don't want a vendor name string, undefine these macros.
217 * ALWAYS define a vendor name containing your Internet domain name if you use
218 * obdev's free shared VID/PID pair. See the file USBID-License.txt for
221 #define USB_CFG_DEVICE_NAME 'l', 'a', 'b', 'o', 'r', 't', 'a', 'g', 'e', '2', '0', '1', '3', ' ', 'b', 'a', 'd', 'g', 'e'
222 #define USB_CFG_DEVICE_NAME_LEN 20
223 /* Same as above for the device name. If you don't want a device name, undefine
224 * the macros. See the file USBID-License.txt before you assign a name if you
225 * use a shared VID/PID.
227 /*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */
228 /*#define USB_CFG_SERIAL_NUMBER_LEN 0 */
229 /* Same as above for the serial number. If you don't want a serial number,
230 * undefine the macros.
231 * It may be useful to provide the serial number through other means than at
232 * compile time. See the section about descriptor properties below for how
233 * to fine tune control over USB descriptors such as the string descriptor
234 * for the serial number.
236 #define USB_CFG_DEVICE_CLASS 0 /* specify the class at the interface level */
237 #define USB_CFG_DEVICE_SUBCLASS 0
238 /* See USB specification if you want to conform to an existing device class.
239 * Class 0xff is "vendor specific".
241 #define USB_CFG_INTERFACE_CLASS 0x03 /* HID class */
242 #define USB_CFG_INTERFACE_SUBCLASS 1 /* boot interface */
243 #define USB_CFG_INTERFACE_PROTOCOL 1 /* keyboard protocol */
244 /* See USB specification if you want to conform to an existing device class or
245 * protocol. The following classes must be set at interface level:
246 * HID class is 3, no subclass and protocol required (but may be useful!)
247 * CDC class is 2, use subclass 2 and protocol 1 for ACM
249 #define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 63 /* total length of report descriptor */
250 /* Define this to the length of the HID report descriptor, if you implement
251 * an HID device. Otherwise don't define it or define it to 0.
252 * If you use this define, you must add a PROGMEM character array named
253 * "usbHidReportDescriptor" to your code which contains the report descriptor.
254 * Don't forget to keep the array and this define in sync!
257 /* #define USB_PUBLIC static */
258 /* Use the define above if you #include usbdrv.c instead of linking against it.
259 * This technique saves a couple of bytes in flash memory.
262 /* ------------------- Fine Control over USB Descriptors ------------------- */
263 /* If you don't want to use the driver's default USB descriptors, you can
264 * provide our own. These can be provided as (1) fixed length static data in
265 * flash memory, (2) fixed length static data in RAM or (3) dynamically at
266 * runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
267 * information about this function.
268 * Descriptor handling is configured through the descriptor's properties. If
269 * no properties are defined or if they are 0, the default descriptor is used.
270 * Possible properties are:
271 * + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
272 * at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
273 * used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
274 * you want RAM pointers.
275 * + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
276 * in static memory is in RAM, not in flash memory.
277 * + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
278 * the driver must know the descriptor's length. The descriptor itself is
279 * found at the address of a well known identifier (see below).
280 * List of static descriptor names (must be declared PROGMEM if in flash):
281 * char usbDescriptorDevice[];
282 * char usbDescriptorConfiguration[];
283 * char usbDescriptorHidReport[];
284 * char usbDescriptorString0[];
285 * int usbDescriptorStringVendor[];
286 * int usbDescriptorStringDevice[];
287 * int usbDescriptorStringSerialNumber[];
288 * Other descriptors can't be provided statically, they must be provided
289 * dynamically at runtime.
291 * Descriptor properties are or-ed or added together, e.g.:
292 * #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18))
294 * The following descriptors are defined:
295 * USB_CFG_DESCR_PROPS_DEVICE
296 * USB_CFG_DESCR_PROPS_CONFIGURATION
297 * USB_CFG_DESCR_PROPS_STRINGS
298 * USB_CFG_DESCR_PROPS_STRING_0
299 * USB_CFG_DESCR_PROPS_STRING_VENDOR
300 * USB_CFG_DESCR_PROPS_STRING_PRODUCT
301 * USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
302 * USB_CFG_DESCR_PROPS_HID
303 * USB_CFG_DESCR_PROPS_HID_REPORT
304 * USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
306 * Note about string descriptors: String descriptors are not just strings, they
307 * are Unicode strings prefixed with a 2 byte header. Example:
308 * int serialNumberDescriptor[] = {
309 * USB_STRING_DESCRIPTOR_HEADER(6),
310 * 'S', 'e', 'r', 'i', 'a', 'l'
314 #define USB_CFG_DESCR_PROPS_DEVICE 0
315 #define USB_CFG_DESCR_PROPS_CONFIGURATION 0
316 #define USB_CFG_DESCR_PROPS_STRINGS 0
317 #define USB_CFG_DESCR_PROPS_STRING_0 0
318 #define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
319 #define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
320 #define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
321 #define USB_CFG_DESCR_PROPS_HID 0
322 #define USB_CFG_DESCR_PROPS_HID_REPORT 0
323 #define USB_CFG_DESCR_PROPS_UNKNOWN 0
325 /* ----------------------- Optional MCU Description ------------------------ */
327 /* The following configurations have working defaults in usbdrv.h. You
328 * usually don't need to set them explicitly. Only if you want to run
329 * the driver on a device which is not yet supported or with a compiler
330 * which is not fully supported (such as IAR C) or if you use a differnt
331 * interrupt than INT0, you may have to define some of these.
333 /* #define USB_INTR_CFG MCUCR */
334 /* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */
335 /* #define USB_INTR_CFG_CLR 0 */
336 /* #define USB_INTR_ENABLE GIMSK */
337 /* #define USB_INTR_ENABLE_BIT INT0 */
338 /* #define USB_INTR_PENDING GIFR */
339 /* #define USB_INTR_PENDING_BIT INTF0 */
340 /* #define USB_INTR_VECTOR SIG_INTERRUPT0 */
342 #endif /* __usbconfig_h_included__ */