-
Notifications
You must be signed in to change notification settings - Fork 20
/
usbd_core.c
536 lines (449 loc) · 11.6 KB
/
usbd_core.c
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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
/**
******************************************************************************
* @file usbd_core.c
* @author MCD Application Team
* @version V2.3.0
* @date 04-November-2014
* @brief This file provides all the USBD core functions.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "usbd_core.h"
/** @addtogroup STM32_USBD_DEVICE_LIBRARY
* @{
*/
/** @defgroup USBD_CORE
* @brief usbd core module
* @{
*/
/** @defgroup USBD_CORE_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Private_Variables
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Private_Functions
* @{
*/
/**
* @brief USBD_Init
* Initializes the device stack and load the class driver
* @param pdev: device instance
* @param pdesc: Descriptor structure address
* @param id: Low level core index
* @retval None
*/
USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, const USBD_DescriptorsTypeDef *pdesc, uint8_t id)
{
/* Check whether the USB Host handle is valid */
if(pdev == NULL)
{
USBD_ErrLog("Invalid Device handle");
return USBD_FAIL;
}
/* Unlink previous class*/
if(pdev->pClass != NULL)
{
pdev->pClass = NULL;
}
/* Assign USBD Descriptors */
if(pdesc != NULL)
{
pdev->pDesc = pdesc;
}
/* Set Device initial State */
pdev->dev_state = USBD_STATE_DEFAULT;
pdev->id = id;
/* Initialize low level driver */
USBD_LL_Init(pdev);
return USBD_OK;
}
/**
* @brief USBD_DeInit
* Re-Initialize th device library
* @param pdev: device instance
* @retval status: status
*/
USBD_StatusTypeDef USBD_DeInit(USBD_HandleTypeDef *pdev)
{
/* Set Default State */
pdev->dev_state = USBD_STATE_DEFAULT;
/* Free Class Resources */
pdev->pClass->DeInit(pdev, pdev->dev_config);
/* Stop the low level driver */
USBD_LL_Stop(pdev);
/* Initialize low level driver */
USBD_LL_DeInit(pdev);
return USBD_OK;
}
/**
* @brief USBD_RegisterClass
* Link class driver to Device Core.
* @param pDevice : Device Handle
* @param pclass: Class handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, const USBD_ClassTypeDef *pclass)
{
USBD_StatusTypeDef status = USBD_OK;
if(pclass != 0)
{
/* link the class to the USB Device handle */
pdev->pClass = pclass;
status = USBD_OK;
}
else
{
USBD_ErrLog("Invalid Class handle");
status = USBD_FAIL;
}
return status;
}
/**
* @brief USBD_Start
* Start the USB Device Core.
* @param pdev: Device Handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_Start (USBD_HandleTypeDef *pdev)
{
/* Start the low level driver */
USBD_LL_Start(pdev);
return USBD_OK;
}
/**
* @brief USBD_Stop
* Stop the USB Device Core.
* @param pdev: Device Handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_Stop (USBD_HandleTypeDef *pdev)
{
/* Free Class Resources */
pdev->pClass->DeInit(pdev, pdev->dev_config);
/* Stop the low level driver */
USBD_LL_Stop(pdev);
return USBD_OK;
}
/**
* @brief USBD_SetClassConfig
* Configure device and start the interface
* @param pdev: device instance
* @param cfgidx: configuration index
* @retval status
*/
USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
{
USBD_StatusTypeDef ret = USBD_FAIL;
if(pdev->pClass != NULL)
{
/* Set configuration and Start the Class*/
if(pdev->pClass->Init(pdev, cfgidx) == 0)
{
ret = USBD_OK;
}
}
return ret;
}
/**
* @brief USBD_ClrClassConfig
* Clear current configuration
* @param pdev: device instance
* @param cfgidx: configuration index
* @retval status: USBD_StatusTypeDef
*/
USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
{
/* Clear configuration and De-initialize the Class process*/
pdev->pClass->DeInit(pdev, cfgidx);
return USBD_OK;
}
/**
* @brief USBD_SetupStage
* Handle the setup stage
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup)
{
USBD_ParseSetupRequest(&pdev->request, psetup);
pdev->ep0_state = USBD_EP0_SETUP;
pdev->ep0_data_len = pdev->request.wLength;
switch (pdev->request.bmRequest & 0x1F)
{
case USB_REQ_RECIPIENT_DEVICE:
USBD_StdDevReq (pdev, &pdev->request);
break;
case USB_REQ_RECIPIENT_INTERFACE:
USBD_StdItfReq(pdev, &pdev->request);
break;
case USB_REQ_RECIPIENT_ENDPOINT:
USBD_StdEPReq(pdev, &pdev->request);
break;
default:
USBD_LL_StallEP(pdev , pdev->request.bmRequest & 0x80);
break;
}
return USBD_OK;
}
/**
* @brief USBD_DataOutStage
* Handle data OUT stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval status
*/
USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata)
{
USBD_EndpointTypeDef *pep;
if(epnum == 0)
{
pep = &pdev->ep_out[0];
if ( pdev->ep0_state == USBD_EP0_DATA_OUT)
{
if(pep->rem_length > pep->maxpacket)
{
pep->rem_length -= pep->maxpacket;
USBD_CtlContinueRx (pdev,
pdata,
MIN(pep->rem_length ,pep->maxpacket));
}
else
{
if((pdev->pClass->EP0_RxReady != NULL)&&
(pdev->dev_state == USBD_STATE_CONFIGURED))
{
pdev->pClass->EP0_RxReady(pdev);
}
USBD_CtlSendStatus(pdev);
}
}
}
else if((pdev->pClass->DataOut != NULL)&&
(pdev->dev_state == USBD_STATE_CONFIGURED))
{
pdev->pClass->DataOut(pdev, epnum);
}
return USBD_OK;
}
/**
* @brief USBD_DataInStage
* Handle data in stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval status
*/
USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev ,uint8_t epnum, uint8_t *pdata)
{
USBD_EndpointTypeDef *pep;
if(epnum == 0)
{
pep = &pdev->ep_in[0];
if ( pdev->ep0_state == USBD_EP0_DATA_IN)
{
if(pep->rem_length > pep->maxpacket)
{
pep->rem_length -= pep->maxpacket;
USBD_CtlContinueSendData (pdev,
pdata,
pep->rem_length);
}
else
{ /* last packet is MPS multiple, so send ZLP packet */
if((pep->total_length % pep->maxpacket == 0) &&
(pep->total_length >= pep->maxpacket) &&
(pep->total_length < pdev->ep0_data_len ))
{
USBD_CtlContinueSendData(pdev , NULL, 0);
pdev->ep0_data_len = 0;
}
else
{
if((pdev->pClass->EP0_TxSent != NULL)&&
(pdev->dev_state == USBD_STATE_CONFIGURED))
{
pdev->pClass->EP0_TxSent(pdev);
}
USBD_CtlReceiveStatus(pdev);
}
}
}
}
else if((pdev->pClass->DataIn != NULL)&&
(pdev->dev_state == USBD_STATE_CONFIGURED))
{
pdev->pClass->DataIn(pdev, epnum);
}
return USBD_OK;
}
/**
* @brief USBD_LL_Reset
* Handle Reset event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef *pdev)
{
/* Open EP0 OUT */
USBD_LL_OpenEP(pdev,
0x00,
USBD_EP_TYPE_CTRL,
USB_MAX_EP0_SIZE);
pdev->ep_out[0].maxpacket = USB_MAX_EP0_SIZE;
/* Open EP0 IN */
USBD_LL_OpenEP(pdev,
0x80,
USBD_EP_TYPE_CTRL,
USB_MAX_EP0_SIZE);
pdev->ep_in[0].maxpacket = USB_MAX_EP0_SIZE;
/* Upon Reset call user call back */
pdev->dev_state = USBD_STATE_DEFAULT;
if (pdev->pClassData)
pdev->pClass->DeInit(pdev, pdev->dev_config);
return USBD_OK;
}
/**
* @brief USBD_LL_Reset
* Handle Reset event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef *pdev, USBD_SpeedTypeDef speed)
{
pdev->dev_speed = speed;
return USBD_OK;
}
/**
* @brief USBD_Suspend
* Handle Suspend event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef *pdev)
{
pdev->dev_old_state = pdev->dev_state;
pdev->dev_state = USBD_STATE_SUSPENDED;
return USBD_OK;
}
/**
* @brief USBD_Resume
* Handle Resume event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef *pdev)
{
pdev->dev_state = pdev->dev_old_state;
return USBD_OK;
}
/**
* @brief USBD_SOF
* Handle SOF event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev)
{
if(pdev->dev_state == USBD_STATE_CONFIGURED)
{
if(pdev->pClass->SOF != NULL)
{
pdev->pClass->SOF(pdev);
}
}
return USBD_OK;
}
/**
* @brief USBD_IsoINIncomplete
* Handle iso in incomplete event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
{
return USBD_OK;
}
/**
* @brief USBD_IsoOUTIncomplete
* Handle iso out incomplete event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
{
return USBD_OK;
}
/**
* @brief USBD_DevConnected
* Handle device connection event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef *pdev)
{
return USBD_OK;
}
/**
* @brief USBD_DevDisconnected
* Handle device disconnection event
* @param pdev: device instance
* @retval status
*/
USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef *pdev)
{
/* Free Class Resources */
pdev->dev_state = USBD_STATE_DEFAULT;
pdev->pClass->DeInit(pdev, pdev->dev_config);
return USBD_OK;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/