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Correct UC3 global interrupt functions.
[pub/USBasp.git] / LUFA / Drivers / USB / Core / UC3 / Endpoint_UC3.h
1 /*
2 LUFA Library
3 Copyright (C) Dean Camera, 2011.
4
5 dean [at] fourwalledcubicle [dot] com
6 www.lufa-lib.org
7 */
8
9 /*
10 Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
11
12 Permission to use, copy, modify, distribute, and sell this
13 software and its documentation for any purpose is hereby granted
14 without fee, provided that the above copyright notice appear in
15 all copies and that both that the copyright notice and this
16 permission notice and warranty disclaimer appear in supporting
17 documentation, and that the name of the author not be used in
18 advertising or publicity pertaining to distribution of the
19 software without specific, written prior permission.
20
21 The author disclaim all warranties with regard to this
22 software, including all implied warranties of merchantability
23 and fitness. In no event shall the author be liable for any
24 special, indirect or consequential damages or any damages
25 whatsoever resulting from loss of use, data or profits, whether
26 in an action of contract, negligence or other tortious action,
27 arising out of or in connection with the use or performance of
28 this software.
29 */
30
31 /** \file
32 * \brief USB Endpoint definitions for the AVR32 UC3 microcontrollers.
33 * \copydetails Group_EndpointManagement_UC3
34 *
35 * \note This file should not be included directly. It is automatically included as needed by the USB driver
36 * dispatch header located in LUFA/Drivers/USB/USB.h.
37 */
38
39 /** \ingroup Group_EndpointRW
40 * \defgroup Group_EndpointRW_UC3 Endpoint Data Reading and Writing (UC3)
41 * \brief Endpoint data read/write definitions for the Atmel AVR32 UC3 architecture.
42 *
43 * Functions, macros, variables, enums and types related to data reading and writing from and to endpoints.
44 */
45
46 /** \ingroup Group_EndpointPrimitiveRW
47 * \defgroup Group_EndpointPrimitiveRW_UC3 Read/Write of Primitive Data Types (UC3)
48 * \brief Endpoint primative read/write definitions for the Atmel AVR32 UC3 architecture.
49 *
50 * Functions, macros, variables, enums and types related to data reading and writing of primitive data types
51 * from and to endpoints.
52 */
53
54 /** \ingroup Group_EndpointPacketManagement
55 * \defgroup Group_EndpointPacketManagement_UC3 Endpoint Packet Management (UC3)
56 * \brief Endpoint packet management definitions for the Atmel AVR32 UC3 architecture.
57 *
58 * Functions, macros, variables, enums and types related to packet management of endpoints.
59 */
60
61 /** \ingroup Group_EndpointManagement
62 * \defgroup Group_EndpointManagement_UC3 Endpoint Management (UC3)
63 * \brief Endpoint management definitions for the Atmel AVR32 UC3 architecture.
64 *
65 * Functions, macros and enums related to endpoint management when in USB Device mode. This
66 * module contains the endpoint management macros, as well as endpoint interrupt and data
67 * send/receive functions for various data types.
68 *
69 * @{
70 */
71
72 #ifndef __ENDPOINT_UC3_H__
73 #define __ENDPOINT_UC3_H__
74
75 /* Includes: */
76 #include "../../../../Common/Common.h"
77 #include "../USBTask.h"
78 #include "../USBInterrupt.h"
79
80 /* Enable C linkage for C++ Compilers: */
81 #if defined(__cplusplus)
82 extern "C" {
83 #endif
84
85 /* Preprocessor Checks: */
86 #if !defined(__INCLUDE_FROM_USB_DRIVER)
87 #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
88 #endif
89
90 /* Private Interface - For use in library only: */
91 #if !defined(__DOXYGEN__)
92 /* Macros: */
93 #define _ENDPOINT_GET_MAXSIZE(EPIndex) _ENDPOINT_GET_MAXSIZE2(ENDPOINT_DETAILS_EP ## EPIndex)
94 #define _ENDPOINT_GET_MAXSIZE2(EPDetails) _ENDPOINT_GET_MAXSIZE3(EPDetails)
95 #define _ENDPOINT_GET_MAXSIZE3(MaxSize, Banks) (MaxSize)
96
97 #define _ENDPOINT_GET_BANKS(EPIndex) _ENDPOINT_GET_BANKS2(ENDPOINT_DETAILS_EP ## EPIndex)
98 #define _ENDPOINT_GET_BANKS2(EPDetails) _ENDPOINT_GET_BANKS3(EPDetails)
99 #define _ENDPOINT_GET_BANKS3(MaxSize, Banks) (Banks)
100
101 #if defined(USB_SERIES_UC3A0_AVR) || defined(USB_SERIES_UC3A1_AVR)
102 #define ENDPOINT_DETAILS_MAXEP 7
103
104 #define ENDPOINT_DETAILS_EP0 64, 1
105 #define ENDPOINT_DETAILS_EP1 256, 2
106 #define ENDPOINT_DETAILS_EP2 256, 2
107 #define ENDPOINT_DETAILS_EP3 64, 2
108 #define ENDPOINT_DETAILS_EP4 64, 2
109 #define ENDPOINT_DETAILS_EP5 256, 2
110 #define ENDPOINT_DETAILS_EP6 256, 2
111 #elif defined(USB_SERIES_UC3A3_AVR) || defined(USB_SERIES_UC3A4_AVR)
112 #define ENDPOINT_DETAILS_MAXEP 8
113
114 #define ENDPOINT_DETAILS_EP0 64, 1
115 #define ENDPOINT_DETAILS_EP1 512, 2
116 #define ENDPOINT_DETAILS_EP2 512, 2
117 #define ENDPOINT_DETAILS_EP3 512, 2
118 #define ENDPOINT_DETAILS_EP4 512, 2
119 #define ENDPOINT_DETAILS_EP5 512, 2
120 #define ENDPOINT_DETAILS_EP6 512, 2
121 #elif defined(USB_SERIES_UC3B0_AVR) || defined(USB_SERIES_UC3B1_AVR)
122 #define ENDPOINT_DETAILS_MAXEP 7
123
124 #define ENDPOINT_DETAILS_EP0 64, 1
125 #define ENDPOINT_DETAILS_EP1 64, 2
126 #define ENDPOINT_DETAILS_EP2 64, 2
127 #define ENDPOINT_DETAILS_EP3 64, 2
128 #define ENDPOINT_DETAILS_EP4 64, 2
129 #define ENDPOINT_DETAILS_EP5 256, 2
130 #define ENDPOINT_DETAILS_EP6 256, 2
131 #endif
132
133 #define ENDPOINT_HSB_ADDRESS_SPACE_SIZE (64 * 1024UL)
134
135 /* Inline Functions: */
136 static inline uint32_t Endpoint_BytesToEPSizeMask(const uint16_t Bytes) ATTR_WARN_UNUSED_RESULT ATTR_CONST
137 ATTR_ALWAYS_INLINE;
138 static inline uint32_t Endpoint_BytesToEPSizeMask(const uint16_t Bytes)
139 {
140 uint8_t MaskVal = 0;
141 uint16_t CheckBytes = 8;
142
143 while (CheckBytes < Bytes)
144 {
145 MaskVal++;
146 CheckBytes <<= 1;
147 }
148
149 return (MaskVal << AVR32_USBB_EPSIZE_OFFSET);
150 }
151
152 /* Function Prototypes: */
153 void Endpoint_ClearEndpoints(void);
154 bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number,
155 const uint32_t UECFGXData);
156
157 /* External Variables: */
158 extern volatile uint8_t USB_SelectedEndpoint;
159 extern volatile uint8_t* USB_EndpointFIFOPos[];
160 #endif
161
162 /* Public Interface - May be used in end-application: */
163 /* Macros: */
164 /** \name Endpoint Direction Masks */
165 //@{
166 /** Endpoint data direction mask for \ref Endpoint_ConfigureEndpoint(). This indicates that the endpoint
167 * should be initialized in the OUT direction - i.e. data flows from host to device.
168 */
169 #define ENDPOINT_DIR_OUT AVR32_USBB_UECFG0_EPDIR_OUT
170
171 /** Endpoint data direction mask for \ref Endpoint_ConfigureEndpoint(). This indicates that the endpoint
172 * should be initialized in the IN direction - i.e. data flows from device to host.
173 */
174 #define ENDPOINT_DIR_IN AVR32_USBB_UECFG0_EPDIR_IN
175 //@}
176
177 /** \name Endpoint Bank Mode Masks */
178 //@{
179 /** Mask for the bank mode selection for the \ref Endpoint_ConfigureEndpoint() macro. This indicates
180 * that the endpoint should have one single bank, which requires less USB FIFO memory but results
181 * in slower transfers as only one USB device (the AVR or the host) can access the endpoint's
182 * bank at the one time.
183 */
184 #define ENDPOINT_BANK_SINGLE AVR32_USBB_UECFG0_EPBK_SINGLE
185
186 /** Mask for the bank mode selection for the \ref Endpoint_ConfigureEndpoint() macro. This indicates
187 * that the endpoint should have two banks, which requires more USB FIFO memory but results
188 * in faster transfers as one USB device (the AVR or the host) can access one bank while the other
189 * accesses the second bank.
190 */
191 #define ENDPOINT_BANK_DOUBLE AVR32_USBB_UECFG0_EPBK_DOUBLE
192 //@}
193
194 #if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))
195 /** Default size of the default control endpoint's bank, until altered by the control endpoint bank size
196 * value in the device descriptor. Not available if the \c FIXED_CONTROL_ENDPOINT_SIZE token is defined.
197 */
198 #define ENDPOINT_CONTROLEP_DEFAULT_SIZE 8
199 #endif
200
201 /** Retrives the maximum bank size in bytes of a given endpoint.
202 *
203 * \note This macro will only work correctly on endpoint indexes that are compile-time constants
204 * defined by the preprocessor.
205 *
206 * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
207 */
208 #define ENDPOINT_MAX_SIZE(EPIndex) _ENDPOINT_GET_MAXSIZE(EPIndex)
209
210 /** Retrieves the total number of banks supported by the given endpoint.
211 *
212 * \note This macro will only work correctly on endpoint indexes that are compile-time constants
213 * defined by the preprocessor.
214 *
215 * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
216 */
217 #define ENDPOINT_BANKS_SUPPORTED(EPIndex) _ENDPOINT_GET_BANKS(EPIndex)
218
219 #if !defined(CONTROL_ONLY_DEVICE) || defined(__DOXYGEN__)
220 /** Total number of endpoints (including the default control endpoint at address 0) which may
221 * be used in the device. Different AVR models support different amounts of endpoints,
222 * this value reflects the maximum number of endpoints for the currently selected AVR model.
223 */
224 #define ENDPOINT_TOTAL_ENDPOINTS ENDPOINT_DETAILS_MAXEP
225 #else
226 #define ENDPOINT_TOTAL_ENDPOINTS 1
227 #endif
228
229 /* Enums: */
230 /** Enum for the possible error return codes of the \ref Endpoint_WaitUntilReady() function.
231 *
232 * \ingroup Group_EndpointRW_UC3
233 */
234 enum Endpoint_WaitUntilReady_ErrorCodes_t
235 {
236 ENDPOINT_READYWAIT_NoError = 0, /**< Endpoint is ready for next packet, no error. */
237 ENDPOINT_READYWAIT_EndpointStalled = 1, /**< The endpoint was stalled during the stream
238 * transfer by the host or device.
239 */
240 ENDPOINT_READYWAIT_DeviceDisconnected = 2, /**< Device was disconnected from the host while
241 * waiting for the endpoint to become ready.
242 */
243 ENDPOINT_READYWAIT_BusSuspended = 3, /**< The USB bus has been suspended by the host and
244 * no USB endpoint traffic can occur until the bus
245 * has resumed.
246 */
247 ENDPOINT_READYWAIT_Timeout = 4, /**< The host failed to accept or send the next packet
248 * within the software timeout period set by the
249 * \ref USB_STREAM_TIMEOUT_MS macro.
250 */
251 };
252
253 /* Inline Functions: */
254 /** Configures the specified endpoint number with the given endpoint type, direction, bank size
255 * and banking mode. Once configured, the endpoint may be read from or written to, depending
256 * on its direction.
257 *
258 * \param[in] Number Endpoint number to configure. This must be more than 0 and less than
259 * \ref ENDPOINT_TOTAL_ENDPOINTS.
260 *
261 * \param[in] Type Type of endpoint to configure, a \c EP_TYPE_* mask. Not all endpoint types
262 * are available on Low Speed USB devices - refer to the USB 2.0 specification.
263 *
264 * \param[in] Direction Endpoint data direction, either \ref ENDPOINT_DIR_OUT or \ref ENDPOINT_DIR_IN.
265 * All endpoints (except Control type) are unidirectional - data may only be read
266 * from or written to the endpoint bank based on its direction, not both.
267 *
268 * \param[in] Size Size of the endpoint's bank, where packets are stored before they are transmitted
269 * to the USB host, or after they have been received from the USB host (depending on
270 * the endpoint's data direction). The bank size must indicate the maximum packet size
271 * that the endpoint can handle.
272 *
273 * \param[in] Banks Number of banks to use for the endpoint being configured, an \c ENDPOINT_BANK_* mask.
274 * More banks uses more USB DPRAM, but offers better performance. Isochronous type
275 * endpoints <b>must</b> have at least two banks.
276 *
277 * \note When the \c ORDERED_EP_CONFIG compile time option is used, Endpoints <b>must</b> be configured in
278 * ascending order, or bank corruption will occur.
279 * \n\n
280 *
281 * \note Different endpoints may have different maximum packet sizes based on the endpoint's index - refer to
282 * the chosen microcontroller model's datasheet to determine the maximum bank size for each endpoint.
283 * \n\n
284 *
285 * \note The default control endpoint should not be manually configured by the user application, as
286 * it is automatically configured by the library internally.
287 * \n\n
288 *
289 * \note This routine will automatically select the specified endpoint upon success. Upon failure, the endpoint
290 * which failed to reconfigure correctly will be selected.
291 *
292 * \return Boolean \c true if the configuration succeeded, \c false otherwise.
293 */
294 static inline bool Endpoint_ConfigureEndpoint(const uint8_t Number,
295 const uint8_t Type,
296 const uint8_t Direction,
297 const uint16_t Size,
298 const uint8_t Banks) ATTR_ALWAYS_INLINE;
299 static inline bool Endpoint_ConfigureEndpoint(const uint8_t Number,
300 const uint8_t Type,
301 const uint8_t Direction,
302 const uint16_t Size,
303 const uint8_t Banks)
304 {
305 return Endpoint_ConfigureEndpoint_Prv(Number, (AVR32_USBB_ALLOC_MASK |
306 ((uint32_t)Type << AVR32_USBB_EPTYPE_OFFSET) |
307 ((uint32_t)Direction << AVR32_USBB_EPDIR_OFFSET) |
308 ((uint32_t)Banks << AVR32_USBB_EPBK_OFFSET) |
309 Endpoint_BytesToEPSizeMask(Size)));
310 }
311
312 /** Indicates the number of bytes currently stored in the current endpoint's selected bank.
313 *
314 * \note The return width of this function may differ, depending on the maximum endpoint bank size
315 * of the selected AVR model.
316 *
317 * \ingroup Group_EndpointRW_UC3
318 *
319 * \return Total number of bytes in the currently selected Endpoint's FIFO buffer.
320 */
321 static inline uint16_t Endpoint_BytesInEndpoint(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
322 static inline uint16_t Endpoint_BytesInEndpoint(void)
323 {
324 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].byct;
325 }
326
327 /** Get the endpoint address of the currently selected endpoint. This is typically used to save
328 * the currently selected endpoint number so that it can be restored after another endpoint has
329 * been manipulated.
330 *
331 * \return Index of the currently selected endpoint.
332 */
333 static inline uint8_t Endpoint_GetCurrentEndpoint(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
334 static inline uint8_t Endpoint_GetCurrentEndpoint(void)
335 {
336 return USB_SelectedEndpoint;
337 }
338
339 /** Selects the given endpoint number. If the address from the device descriptors is used, the
340 * value should be masked with the \ref ENDPOINT_EPNUM_MASK constant to extract only the endpoint
341 * number (and discarding the endpoint direction bit).
342 *
343 * Any endpoint operations which do not require the endpoint number to be indicated will operate on
344 * the currently selected endpoint.
345 *
346 * \param[in] EndpointNumber Endpoint number to select.
347 */
348 static inline void Endpoint_SelectEndpoint(const uint8_t EndpointNumber) ATTR_ALWAYS_INLINE;
349 static inline void Endpoint_SelectEndpoint(const uint8_t EndpointNumber)
350 {
351 USB_SelectedEndpoint = EndpointNumber;
352 }
353
354 /** Resets the endpoint bank FIFO. This clears all the endpoint banks and resets the USB controller's
355 * data In and Out pointers to the bank's contents.
356 *
357 * \param[in] EndpointNumber Endpoint number whose FIFO buffers are to be reset.
358 */
359 static inline void Endpoint_ResetEndpoint(const uint8_t EndpointNumber) ATTR_ALWAYS_INLINE;
360 static inline void Endpoint_ResetEndpoint(const uint8_t EndpointNumber)
361 {
362 AVR32_USBB.uerst |= (AVR32_USBB_EPRST0_MASK << EndpointNumber);
363 AVR32_USBB.uerst &= ~(AVR32_USBB_EPRST0_MASK << EndpointNumber);
364 USB_EndpointFIFOPos[EndpointNumber] = &AVR32_USBB_SLAVE[EndpointNumber * ENDPOINT_HSB_ADDRESS_SPACE_SIZE];
365 }
366
367 /** Enables the currently selected endpoint so that data can be sent and received through it to
368 * and from a host.
369 *
370 * \note Endpoints must first be configured properly via \ref Endpoint_ConfigureEndpoint().
371 */
372 static inline void Endpoint_EnableEndpoint(void) ATTR_ALWAYS_INLINE;
373 static inline void Endpoint_EnableEndpoint(void)
374 {
375 AVR32_USBB.uerst |= (AVR32_USBB_EPEN0_MASK << USB_SelectedEndpoint);
376 }
377
378 /** Disables the currently selected endpoint so that data cannot be sent and received through it
379 * to and from a host.
380 */
381 static inline void Endpoint_DisableEndpoint(void) ATTR_ALWAYS_INLINE;
382 static inline void Endpoint_DisableEndpoint(void)
383 {
384 AVR32_USBB.uerst &= ~(AVR32_USBB_EPEN0_MASK << USB_SelectedEndpoint);
385 }
386
387 /** Determines if the currently selected endpoint is enabled, but not necessarily configured.
388 *
389 * \return Boolean \c true if the currently selected endpoint is enabled, \c false otherwise.
390 */
391 static inline bool Endpoint_IsEnabled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
392 static inline bool Endpoint_IsEnabled(void)
393 {
394 return ((AVR32_USBB.uerst & (AVR32_USBB_EPEN0_MASK << USB_SelectedEndpoint)) ? true : false);
395 }
396
397 /** Retrieves the number of busy banks in the currently selected endpoint, which have been queued for
398 * transmission via the \ref Endpoint_ClearIN() command, or are awaiting acknowledgement via the
399 * \ref Endpoint_ClearOUT() command.
400 *
401 * \ingroup Group_EndpointPacketManagement_UC3
402 *
403 * \return Total number of busy banks in the selected endpoint.
404 */
405 static inline uint8_t Endpoint_GetBusyBanks(void)
406 {
407 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].nbusybk;
408 }
409
410 /** Aborts all pending IN transactions on the currently selected endpoint, once the bank
411 * has been queued for transmission to the host via \ref Endpoint_ClearIN(). This function
412 * will terminate all queued transactions, resetting the endpoint banks ready for a new
413 * packet.
414 *
415 * \ingroup Group_EndpointPacketManagement_UC3
416 */
417 static inline void Endpoint_AbortPendingIN(void)
418 {
419 while (Endpoint_GetBusyBanks() != 0)
420 {
421 (&AVR32_USBB.UECON0SET)[USB_SelectedEndpoint].killbks = true;
422 while ((&AVR32_USBB.UECON0)[USB_SelectedEndpoint].killbk);
423 }
424 }
425
426 /** Determines if the currently selected endpoint may be read from (if data is waiting in the endpoint
427 * bank and the endpoint is an OUT direction, or if the bank is not yet full if the endpoint is an IN
428 * direction). This function will return false if an error has occurred in the endpoint, if the endpoint
429 * is an OUT direction and no packet (or an empty packet) has been received, or if the endpoint is an IN
430 * direction and the endpoint bank is full.
431 *
432 * \ingroup Group_EndpointPacketManagement_UC3
433 *
434 * \return Boolean \c true if the currently selected endpoint may be read from or written to, depending
435 * on its direction.
436 */
437 static inline bool Endpoint_IsReadWriteAllowed(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
438 static inline bool Endpoint_IsReadWriteAllowed(void)
439 {
440 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].rwall;
441 }
442
443 /** Determines if the currently selected endpoint is configured.
444 *
445 * \return Boolean \c true if the currently selected endpoint has been configured, \c false otherwise.
446 */
447 static inline bool Endpoint_IsConfigured(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
448 static inline bool Endpoint_IsConfigured(void)
449 {
450 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].cfgok;
451 }
452
453 /** Returns a mask indicating which INTERRUPT type endpoints have interrupted - i.e. their
454 * interrupt duration has elapsed. Which endpoints have interrupted can be determined by
455 * masking the return value against <tt>(1 << <i>{Endpoint Number}</i>)</tt>.
456 *
457 * \return Mask whose bits indicate which endpoints have interrupted.
458 */
459 static inline uint8_t Endpoint_GetEndpointInterrupts(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
460 static inline uint8_t Endpoint_GetEndpointInterrupts(void)
461 {
462 return ((AVR32_USBB.udint & (AVR32_USBB_EP6INT_MASK | AVR32_USBB_EP5INT_MASK |
463 AVR32_USBB_EP4INT_MASK | AVR32_USBB_EP3INT_MASK |
464 AVR32_USBB_EP2INT_MASK | AVR32_USBB_EP1INT_MASK |
465 AVR32_USBB_EP0INT_MASK)) >> AVR32_USBB_EP0INT_OFFSET);
466 }
467
468 /** Determines if the specified endpoint number has interrupted (valid only for INTERRUPT type
469 * endpoints).
470 *
471 * \param[in] EndpointNumber Index of the endpoint whose interrupt flag should be tested.
472 *
473 * \return Boolean \c true if the specified endpoint has interrupted, \c false otherwise.
474 */
475 static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
476 static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber)
477 {
478 return ((Endpoint_GetEndpointInterrupts() & (AVR32_USBB_EP0INT_MASK << EndpointNumber)) ? true : false);
479 }
480
481 /** Determines if the selected IN endpoint is ready for a new packet to be sent to the host.
482 *
483 * \ingroup Group_EndpointPacketManagement_UC3
484 *
485 * \return Boolean \c true if the current endpoint is ready for an IN packet, \c false otherwise.
486 */
487 static inline bool Endpoint_IsINReady(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
488 static inline bool Endpoint_IsINReady(void)
489 {
490 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].txini;
491 }
492
493 /** Determines if the selected OUT endpoint has received new packet from the host.
494 *
495 * \ingroup Group_EndpointPacketManagement_UC3
496 *
497 * \return Boolean \c true if current endpoint is has received an OUT packet, \c false otherwise.
498 */
499 static inline bool Endpoint_IsOUTReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
500 static inline bool Endpoint_IsOUTReceived(void)
501 {
502 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].rxouti;
503 }
504
505 /** Determines if the current CONTROL type endpoint has received a SETUP packet.
506 *
507 * \ingroup Group_EndpointPacketManagement_UC3
508 *
509 * \return Boolean \c true if the selected endpoint has received a SETUP packet, \c false otherwise.
510 */
511 static inline bool Endpoint_IsSETUPReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
512 static inline bool Endpoint_IsSETUPReceived(void)
513 {
514 return (&AVR32_USBB.UESTA0)[USB_SelectedEndpoint].rxstpi;
515 }
516
517 /** Clears a received SETUP packet on the currently selected CONTROL type endpoint, freeing up the
518 * endpoint for the next packet.
519 *
520 * \ingroup Group_EndpointPacketManagement_UC3
521 *
522 * \note This is not applicable for non CONTROL type endpoints.
523 */
524 static inline void Endpoint_ClearSETUP(void) ATTR_ALWAYS_INLINE;
525 static inline void Endpoint_ClearSETUP(void)
526 {
527 (&AVR32_USBB.UESTA0CLR)[USB_SelectedEndpoint].rxstpic = true;
528 USB_EndpointFIFOPos[USB_SelectedEndpoint] = &AVR32_USBB_SLAVE[USB_SelectedEndpoint * ENDPOINT_HSB_ADDRESS_SPACE_SIZE];
529 }
530
531 /** Sends an IN packet to the host on the currently selected endpoint, freeing up the endpoint for the
532 * next packet and switching to the alternative endpoint bank if double banked.
533 *
534 * \ingroup Group_EndpointPacketManagement_UC3
535 */
536 static inline void Endpoint_ClearIN(void) ATTR_ALWAYS_INLINE;
537 static inline void Endpoint_ClearIN(void)
538 {
539 (&AVR32_USBB.UESTA0CLR)[USB_SelectedEndpoint].txinic = true;
540 (&AVR32_USBB.UECON0CLR)[USB_SelectedEndpoint].fifoconc = true;
541 USB_EndpointFIFOPos[USB_SelectedEndpoint] = &AVR32_USBB_SLAVE[USB_SelectedEndpoint * ENDPOINT_HSB_ADDRESS_SPACE_SIZE];
542 }
543
544 /** Acknowledges an OUT packet to the host on the currently selected endpoint, freeing up the endpoint
545 * for the next packet and switching to the alternative endpoint bank if double banked.
546 *
547 * \ingroup Group_EndpointPacketManagement_UC3
548 */
549 static inline void Endpoint_ClearOUT(void) ATTR_ALWAYS_INLINE;
550 static inline void Endpoint_ClearOUT(void)
551 {
552 (&AVR32_USBB.UESTA0CLR)[USB_SelectedEndpoint].rxoutic = true;
553 (&AVR32_USBB.UECON0CLR)[USB_SelectedEndpoint].fifoconc = true;
554 USB_EndpointFIFOPos[USB_SelectedEndpoint] = &AVR32_USBB_SLAVE[USB_SelectedEndpoint * ENDPOINT_HSB_ADDRESS_SPACE_SIZE];
555 }
556
557 /** Stalls the current endpoint, indicating to the host that a logical problem occurred with the
558 * indicated endpoint and that the current transfer sequence should be aborted. This provides a
559 * way for devices to indicate invalid commands to the host so that the current transfer can be
560 * aborted and the host can begin its own recovery sequence.
561 *
562 * The currently selected endpoint remains stalled until either the \ref Endpoint_ClearStall() macro
563 * is called, or the host issues a CLEAR FEATURE request to the device for the currently selected
564 * endpoint.
565 *
566 * \ingroup Group_EndpointPacketManagement_UC3
567 */
568 static inline void Endpoint_StallTransaction(void) ATTR_ALWAYS_INLINE;
569 static inline void Endpoint_StallTransaction(void)
570 {
571 (&AVR32_USBB.UECON0SET)[USB_SelectedEndpoint].stallrqs = true;
572 }
573
574 /** Clears the STALL condition on the currently selected endpoint.
575 *
576 * \ingroup Group_EndpointPacketManagement_UC3
577 */
578 static inline void Endpoint_ClearStall(void) ATTR_ALWAYS_INLINE;
579 static inline void Endpoint_ClearStall(void)
580 {
581 (&AVR32_USBB.UECON0CLR)[USB_SelectedEndpoint].stallrqc = true;
582 }
583
584 /** Determines if the currently selected endpoint is stalled, false otherwise.
585 *
586 * \ingroup Group_EndpointPacketManagement_UC3
587 *
588 * \return Boolean \c true if the currently selected endpoint is stalled, \c false otherwise.
589 */
590 static inline bool Endpoint_IsStalled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
591 static inline bool Endpoint_IsStalled(void)
592 {
593 return (&AVR32_USBB.UECON0)[USB_SelectedEndpoint].stallrq;
594 }
595
596 /** Resets the data toggle of the currently selected endpoint. */
597 static inline void Endpoint_ResetDataToggle(void) ATTR_ALWAYS_INLINE;
598 static inline void Endpoint_ResetDataToggle(void)
599 {
600 (&AVR32_USBB.UECON0SET)[USB_SelectedEndpoint].rstdts = true;
601 }
602
603 /** Determines the currently selected endpoint's direction.
604 *
605 * \return The currently selected endpoint's direction, as a \c ENDPOINT_DIR_* mask.
606 */
607 static inline uint32_t Endpoint_GetEndpointDirection(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
608 static inline uint32_t Endpoint_GetEndpointDirection(void)
609 {
610 return ((&AVR32_USBB.UECFG0)[USB_SelectedEndpoint].epdir ? ENDPOINT_DIR_IN : ENDPOINT_DIR_OUT);
611 }
612
613 /** Sets the direction of the currently selected endpoint.
614 *
615 * \param[in] DirectionMask New endpoint direction, as a \c ENDPOINT_DIR_* mask.
616 */
617 static inline void Endpoint_SetEndpointDirection(const uint32_t DirectionMask) ATTR_ALWAYS_INLINE;
618 static inline void Endpoint_SetEndpointDirection(const uint32_t DirectionMask)
619 {
620 (&AVR32_USBB.UECFG0)[USB_SelectedEndpoint].epdir = (DirectionMask == ENDPOINT_DIR_IN);
621 }
622
623 /** Reads one byte from the currently selected endpoint's bank, for OUT direction endpoints.
624 *
625 * \ingroup Group_EndpointPrimitiveRW_UC3
626 *
627 * \return Next byte in the currently selected endpoint's FIFO buffer.
628 */
629 static inline uint8_t Endpoint_Read_8(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
630 static inline uint8_t Endpoint_Read_8(void)
631 {
632 return *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
633 }
634
635 /** Writes one byte from the currently selected endpoint's bank, for IN direction endpoints.
636 *
637 * \ingroup Group_EndpointPrimitiveRW_UC3
638 *
639 * \param[in] Data Data to write into the the currently selected endpoint's FIFO buffer.
640 */
641 static inline void Endpoint_Write_8(const uint8_t Data) ATTR_ALWAYS_INLINE;
642 static inline void Endpoint_Write_8(const uint8_t Data)
643 {
644 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = Data;
645 }
646
647 /** Discards one byte from the currently selected endpoint's bank, for OUT direction endpoints.
648 *
649 * \ingroup Group_EndpointPrimitiveRW_UC3
650 */
651 static inline void Endpoint_Discard_8(void) ATTR_ALWAYS_INLINE;
652 static inline void Endpoint_Discard_8(void)
653 {
654 uint8_t Dummy;
655
656 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
657 }
658
659 /** Reads two bytes from the currently selected endpoint's bank in little endian format, for OUT
660 * direction endpoints.
661 *
662 * \ingroup Group_EndpointPrimitiveRW_UC3
663 *
664 * \return Next two bytes in the currently selected endpoint's FIFO buffer.
665 */
666 static inline uint16_t Endpoint_Read_16_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
667 static inline uint16_t Endpoint_Read_16_LE(void)
668 {
669 uint16_t Byte1 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
670 uint16_t Byte0 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
671
672 return ((Byte0 << 8) | Byte1);
673 }
674
675 /** Reads two bytes from the currently selected endpoint's bank in big endian format, for OUT
676 * direction endpoints.
677 *
678 * \ingroup Group_EndpointPrimitiveRW_UC3
679 *
680 * \return Next two bytes in the currently selected endpoint's FIFO buffer.
681 */
682 static inline uint16_t Endpoint_Read_16_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
683 static inline uint16_t Endpoint_Read_16_BE(void)
684 {
685 uint16_t Byte0 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
686 uint16_t Byte1 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
687
688 return ((Byte0 << 8) | Byte1);
689 }
690
691 /** Writes two bytes to the currently selected endpoint's bank in little endian format, for IN
692 * direction endpoints.
693 *
694 * \ingroup Group_EndpointPrimitiveRW_UC3
695 *
696 * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer.
697 */
698 static inline void Endpoint_Write_16_LE(const uint16_t Data) ATTR_ALWAYS_INLINE;
699 static inline void Endpoint_Write_16_LE(const uint16_t Data)
700 {
701 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 8);
702 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data & 0xFF);
703 }
704
705 /** Writes two bytes to the currently selected endpoint's bank in big endian format, for IN
706 * direction endpoints.
707 *
708 * \ingroup Group_EndpointPrimitiveRW_UC3
709 *
710 * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer.
711 */
712 static inline void Endpoint_Write_16_BE(const uint16_t Data) ATTR_ALWAYS_INLINE;
713 static inline void Endpoint_Write_16_BE(const uint16_t Data)
714 {
715 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data & 0xFF);
716 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 8);
717 }
718
719 /** Discards two bytes from the currently selected endpoint's bank, for OUT direction endpoints.
720 *
721 * \ingroup Group_EndpointPrimitiveRW_UC3
722 */
723 static inline void Endpoint_Discard_16(void) ATTR_ALWAYS_INLINE;
724 static inline void Endpoint_Discard_16(void)
725 {
726 uint8_t Dummy;
727
728 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
729 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
730 }
731
732 /** Reads four bytes from the currently selected endpoint's bank in little endian format, for OUT
733 * direction endpoints.
734 *
735 * \ingroup Group_EndpointPrimitiveRW_UC3
736 *
737 * \return Next four bytes in the currently selected endpoint's FIFO buffer.
738 */
739 static inline uint32_t Endpoint_Read_32_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
740 static inline uint32_t Endpoint_Read_32_LE(void)
741 {
742 uint32_t Byte3 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
743 uint32_t Byte2 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
744 uint32_t Byte1 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
745 uint32_t Byte0 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
746
747 return ((Byte0 << 24) | (Byte1 << 16) | (Byte2 << 8) | Byte3);
748 }
749
750 /** Reads four bytes from the currently selected endpoint's bank in big endian format, for OUT
751 * direction endpoints.
752 *
753 * \ingroup Group_EndpointPrimitiveRW_UC3
754 *
755 * \return Next four bytes in the currently selected endpoint's FIFO buffer.
756 */
757 static inline uint32_t Endpoint_Read_32_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
758 static inline uint32_t Endpoint_Read_32_BE(void)
759 {
760 uint32_t Byte0 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
761 uint32_t Byte1 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
762 uint32_t Byte2 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
763 uint32_t Byte3 = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
764
765 return ((Byte0 << 24) | (Byte1 << 16) | (Byte2 << 8) | Byte3);
766 }
767
768 /** Writes four bytes to the currently selected endpoint's bank in little endian format, for IN
769 * direction endpoints.
770 *
771 * \ingroup Group_EndpointPrimitiveRW_UC3
772 *
773 * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer.
774 */
775 static inline void Endpoint_Write_32_LE(const uint32_t Data) ATTR_ALWAYS_INLINE;
776 static inline void Endpoint_Write_32_LE(const uint32_t Data)
777 {
778 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 24);
779 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 16);
780 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 8);
781 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data & 0xFF);
782 }
783
784 /** Writes four bytes to the currently selected endpoint's bank in big endian format, for IN
785 * direction endpoints.
786 *
787 * \ingroup Group_EndpointPrimitiveRW_UC3
788 *
789 * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer.
790 */
791 static inline void Endpoint_Write_32_BE(const uint32_t Data) ATTR_ALWAYS_INLINE;
792 static inline void Endpoint_Write_32_BE(const uint32_t Data)
793 {
794 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data & 0xFF);
795 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 8);
796 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 16);
797 *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++) = (Data >> 24);
798 }
799
800 /** Discards four bytes from the currently selected endpoint's bank, for OUT direction endpoints.
801 *
802 * \ingroup Group_EndpointPrimitiveRW_UC3
803 */
804 static inline void Endpoint_Discard_32(void) ATTR_ALWAYS_INLINE;
805 static inline void Endpoint_Discard_32(void)
806 {
807 uint8_t Dummy;
808
809 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
810 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
811 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
812 Dummy = *(USB_EndpointFIFOPos[USB_SelectedEndpoint]++);
813 }
814
815 /* External Variables: */
816 /** Global indicating the maximum packet size of the default control endpoint located at address
817 * 0 in the device. This value is set to the value indicated in the device descriptor in the user
818 * project once the USB interface is initialized into device mode.
819 *
820 * If space is an issue, it is possible to fix this to a static value by defining the control
821 * endpoint size in the \c FIXED_CONTROL_ENDPOINT_SIZE token passed to the compiler in the makefile
822 * via the -D switch. When a fixed control endpoint size is used, the size is no longer dynamically
823 * read from the descriptors at runtime and instead fixed to the given value. When used, it is
824 * important that the descriptor control endpoint size value matches the size given as the
825 * \c FIXED_CONTROL_ENDPOINT_SIZE token - it is recommended that the \c FIXED_CONTROL_ENDPOINT_SIZE token
826 * be used in the device descriptors to ensure this.
827 *
828 * \note This variable should be treated as read-only in the user application, and never manually
829 * changed in value.
830 */
831 #if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))
832 extern uint8_t USB_ControlEndpointSize;
833 #else
834 #define USB_ControlEndpointSize FIXED_CONTROL_ENDPOINT_SIZE
835 #endif
836
837 /* Function Prototypes: */
838 /** Completes the status stage of a control transfer on a CONTROL type endpoint automatically,
839 * with respect to the data direction. This is a convenience function which can be used to
840 * simplify user control request handling.
841 */
842 void Endpoint_ClearStatusStage(void);
843
844 /** Spin-loops until the currently selected non-control endpoint is ready for the next packet of data
845 * to be read or written to it.
846 *
847 * \note This routine should not be called on CONTROL type endpoints.
848 *
849 * \ingroup Group_EndpointRW_UC3
850 *
851 * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum.
852 */
853 uint8_t Endpoint_WaitUntilReady(void);
854
855 /* Disable C linkage for C++ Compilers: */
856 #if defined(__cplusplus)
857 }
858 #endif
859
860 #endif
861
862 /** @} */
863
USB isp AVR programmer