1 | /**
|
---|
2 | ******************************************************************************
|
---|
3 | * @file usbd_cdc.c
|
---|
4 | * @author MCD Application Team
|
---|
5 | * @brief This file provides the high layer firmware functions to manage the
|
---|
6 | * following functionalities of the USB CDC Class:
|
---|
7 | * - Initialization and Configuration of high and low layer
|
---|
8 | * - Enumeration as CDC Device (and enumeration for each implemented memory interface)
|
---|
9 | * - OUT/IN data transfer
|
---|
10 | * - Command IN transfer (class requests management)
|
---|
11 | * - Error management
|
---|
12 | *
|
---|
13 | * @verbatim
|
---|
14 | *
|
---|
15 | * ===================================================================
|
---|
16 | * CDC Class Driver Description
|
---|
17 | * ===================================================================
|
---|
18 | * This driver manages the "Universal Serial Bus Class Definitions for Communications Devices
|
---|
19 | * Revision 1.2 November 16, 2007" and the sub-protocol specification of "Universal Serial Bus
|
---|
20 | * Communications Class Subclass Specification for PSTN Devices Revision 1.2 February 9, 2007"
|
---|
21 | * This driver implements the following aspects of the specification:
|
---|
22 | * - Device descriptor management
|
---|
23 | * - Configuration descriptor management
|
---|
24 | * - Enumeration as CDC device with 2 data endpoints (IN and OUT) and 1 command endpoint (IN)
|
---|
25 | * - Requests management (as described in section 6.2 in specification)
|
---|
26 | * - Abstract Control Model compliant
|
---|
27 | * - Union Functional collection (using 1 IN endpoint for control)
|
---|
28 | * - Data interface class
|
---|
29 | *
|
---|
30 | * These aspects may be enriched or modified for a specific user application.
|
---|
31 | *
|
---|
32 | * This driver doesn't implement the following aspects of the specification
|
---|
33 | * (but it is possible to manage these features with some modifications on this driver):
|
---|
34 | * - Any class-specific aspect relative to communication classes should be managed by user application.
|
---|
35 | * - All communication classes other than PSTN are not managed
|
---|
36 | *
|
---|
37 | * @endverbatim
|
---|
38 | *
|
---|
39 | ******************************************************************************
|
---|
40 | * @attention
|
---|
41 | *
|
---|
42 | * <h2><center>© Copyright (c) 2015 STMicroelectronics.
|
---|
43 | * All rights reserved.</center></h2>
|
---|
44 | *
|
---|
45 | * This software component is licensed by ST under Ultimate Liberty license
|
---|
46 | * SLA0044, the "License"; You may not use this file except in compliance with
|
---|
47 | * the License. You may obtain a copy of the License at:
|
---|
48 | * www.st.com/SLA0044
|
---|
49 | *
|
---|
50 | ******************************************************************************
|
---|
51 | */
|
---|
52 |
|
---|
53 | /* BSPDependencies
|
---|
54 | - "stm32xxxxx_{eval}{discovery}{nucleo_144}.c"
|
---|
55 | - "stm32xxxxx_{eval}{discovery}_io.c"
|
---|
56 | EndBSPDependencies */
|
---|
57 |
|
---|
58 | /* Includes ------------------------------------------------------------------*/
|
---|
59 | #include "usbd_cdc.h"
|
---|
60 | #include "usbd_ctlreq.h"
|
---|
61 |
|
---|
62 |
|
---|
63 | /** @addtogroup STM32_USB_DEVICE_LIBRARY
|
---|
64 | * @{
|
---|
65 | */
|
---|
66 |
|
---|
67 |
|
---|
68 | /** @defgroup USBD_CDC
|
---|
69 | * @brief usbd core module
|
---|
70 | * @{
|
---|
71 | */
|
---|
72 |
|
---|
73 | /** @defgroup USBD_CDC_Private_TypesDefinitions
|
---|
74 | * @{
|
---|
75 | */
|
---|
76 | /**
|
---|
77 | * @}
|
---|
78 | */
|
---|
79 |
|
---|
80 |
|
---|
81 | /** @defgroup USBD_CDC_Private_Defines
|
---|
82 | * @{
|
---|
83 | */
|
---|
84 | /**
|
---|
85 | * @}
|
---|
86 | */
|
---|
87 |
|
---|
88 |
|
---|
89 | /** @defgroup USBD_CDC_Private_Macros
|
---|
90 | * @{
|
---|
91 | */
|
---|
92 |
|
---|
93 | /**
|
---|
94 | * @}
|
---|
95 | */
|
---|
96 |
|
---|
97 |
|
---|
98 | /** @defgroup USBD_CDC_Private_FunctionPrototypes
|
---|
99 | * @{
|
---|
100 | */
|
---|
101 |
|
---|
102 | static uint8_t USBD_CDC_Init(USBD_HandleTypeDef *pdev, uint8_t cfgidx);
|
---|
103 | static uint8_t USBD_CDC_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx);
|
---|
104 | static uint8_t USBD_CDC_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
|
---|
105 | static uint8_t USBD_CDC_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum);
|
---|
106 | static uint8_t USBD_CDC_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum);
|
---|
107 | static uint8_t USBD_CDC_EP0_RxReady(USBD_HandleTypeDef *pdev);
|
---|
108 |
|
---|
109 | static uint8_t *USBD_CDC_GetFSCfgDesc(uint16_t *length);
|
---|
110 | static uint8_t *USBD_CDC_GetHSCfgDesc(uint16_t *length);
|
---|
111 | static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc(uint16_t *length);
|
---|
112 | static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc(uint16_t *length);
|
---|
113 | uint8_t *USBD_CDC_GetDeviceQualifierDescriptor(uint16_t *length);
|
---|
114 |
|
---|
115 | /* USB Standard Device Descriptor */
|
---|
116 | __ALIGN_BEGIN static uint8_t USBD_CDC_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END =
|
---|
117 | {
|
---|
118 | USB_LEN_DEV_QUALIFIER_DESC,
|
---|
119 | USB_DESC_TYPE_DEVICE_QUALIFIER,
|
---|
120 | 0x00,
|
---|
121 | 0x02,
|
---|
122 | 0x00,
|
---|
123 | 0x00,
|
---|
124 | 0x00,
|
---|
125 | 0x40,
|
---|
126 | 0x01,
|
---|
127 | 0x00,
|
---|
128 | };
|
---|
129 |
|
---|
130 | /**
|
---|
131 | * @}
|
---|
132 | */
|
---|
133 |
|
---|
134 | /** @defgroup USBD_CDC_Private_Variables
|
---|
135 | * @{
|
---|
136 | */
|
---|
137 |
|
---|
138 |
|
---|
139 | /* CDC interface class callbacks structure */
|
---|
140 | USBD_ClassTypeDef USBD_CDC =
|
---|
141 | {
|
---|
142 | USBD_CDC_Init,
|
---|
143 | USBD_CDC_DeInit,
|
---|
144 | USBD_CDC_Setup,
|
---|
145 | NULL, /* EP0_TxSent, */
|
---|
146 | USBD_CDC_EP0_RxReady,
|
---|
147 | USBD_CDC_DataIn,
|
---|
148 | USBD_CDC_DataOut,
|
---|
149 | NULL,
|
---|
150 | NULL,
|
---|
151 | NULL,
|
---|
152 | USBD_CDC_GetHSCfgDesc,
|
---|
153 | USBD_CDC_GetFSCfgDesc,
|
---|
154 | USBD_CDC_GetOtherSpeedCfgDesc,
|
---|
155 | USBD_CDC_GetDeviceQualifierDescriptor,
|
---|
156 | };
|
---|
157 |
|
---|
158 | /* USB CDC device Configuration Descriptor */
|
---|
159 | __ALIGN_BEGIN static uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
|
---|
160 | {
|
---|
161 | /* Configuration Descriptor */
|
---|
162 | 0x09, /* bLength: Configuration Descriptor size */
|
---|
163 | USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
|
---|
164 | USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */
|
---|
165 | 0x00,
|
---|
166 | 0x02, /* bNumInterfaces: 2 interface */
|
---|
167 | 0x01, /* bConfigurationValue: Configuration value */
|
---|
168 | 0x00, /* iConfiguration: Index of string descriptor describing the configuration */
|
---|
169 | #if (USBD_SELF_POWERED == 1U)
|
---|
170 | 0xC0, /* bmAttributes: Bus Powered according to user configuration */
|
---|
171 | #else
|
---|
172 | 0x80, /* bmAttributes: Bus Powered according to user configuration */
|
---|
173 | #endif
|
---|
174 | USBD_MAX_POWER, /* MaxPower 100 mA */
|
---|
175 |
|
---|
176 | /*---------------------------------------------------------------------------*/
|
---|
177 |
|
---|
178 | /* Interface Descriptor */
|
---|
179 | 0x09, /* bLength: Interface Descriptor size */
|
---|
180 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
|
---|
181 | 0x00, /* bInterfaceNumber: Number of Interface */
|
---|
182 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
183 | 0x01, /* bNumEndpoints: One endpoints used */
|
---|
184 | 0x02, /* bInterfaceClass: Communication Interface Class */
|
---|
185 | 0x02, /* bInterfaceSubClass: Abstract Control Model */
|
---|
186 | 0x01, /* bInterfaceProtocol: Common AT commands */
|
---|
187 | 0x00, /* iInterface: */
|
---|
188 |
|
---|
189 | /* Header Functional Descriptor */
|
---|
190 | 0x05, /* bLength: Endpoint Descriptor size */
|
---|
191 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
192 | 0x00, /* bDescriptorSubtype: Header Func Desc */
|
---|
193 | 0x10, /* bcdCDC: spec release number */
|
---|
194 | 0x01,
|
---|
195 |
|
---|
196 | /* Call Management Functional Descriptor */
|
---|
197 | 0x05, /* bFunctionLength */
|
---|
198 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
199 | 0x01, /* bDescriptorSubtype: Call Management Func Desc */
|
---|
200 | 0x00, /* bmCapabilities: D0+D1 */
|
---|
201 | 0x01, /* bDataInterface: 1 */
|
---|
202 |
|
---|
203 | /* ACM Functional Descriptor */
|
---|
204 | 0x04, /* bFunctionLength */
|
---|
205 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
206 | 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
|
---|
207 | 0x02, /* bmCapabilities */
|
---|
208 |
|
---|
209 | /* Union Functional Descriptor */
|
---|
210 | 0x05, /* bFunctionLength */
|
---|
211 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
212 | 0x06, /* bDescriptorSubtype: Union func desc */
|
---|
213 | 0x00, /* bMasterInterface: Communication class interface */
|
---|
214 | 0x01, /* bSlaveInterface0: Data Class Interface */
|
---|
215 |
|
---|
216 | /* Endpoint 2 Descriptor */
|
---|
217 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
218 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
219 | CDC_CMD_EP, /* bEndpointAddress */
|
---|
220 | 0x03, /* bmAttributes: Interrupt */
|
---|
221 | LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
222 | HIBYTE(CDC_CMD_PACKET_SIZE),
|
---|
223 | CDC_HS_BINTERVAL, /* bInterval: */
|
---|
224 | /*---------------------------------------------------------------------------*/
|
---|
225 |
|
---|
226 | /* Data class interface descriptor */
|
---|
227 | 0x09, /* bLength: Endpoint Descriptor size */
|
---|
228 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
|
---|
229 | 0x01, /* bInterfaceNumber: Number of Interface */
|
---|
230 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
231 | 0x02, /* bNumEndpoints: Two endpoints used */
|
---|
232 | 0x0A, /* bInterfaceClass: CDC */
|
---|
233 | 0x00, /* bInterfaceSubClass: */
|
---|
234 | 0x00, /* bInterfaceProtocol: */
|
---|
235 | 0x00, /* iInterface: */
|
---|
236 |
|
---|
237 | /* Endpoint OUT Descriptor */
|
---|
238 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
239 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
240 | CDC_OUT_EP, /* bEndpointAddress */
|
---|
241 | 0x02, /* bmAttributes: Bulk */
|
---|
242 | LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
243 | HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
|
---|
244 | 0x00, /* bInterval: ignore for Bulk transfer */
|
---|
245 |
|
---|
246 | /* Endpoint IN Descriptor */
|
---|
247 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
248 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
249 | CDC_IN_EP, /* bEndpointAddress */
|
---|
250 | 0x02, /* bmAttributes: Bulk */
|
---|
251 | LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
252 | HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
|
---|
253 | 0x00 /* bInterval: ignore for Bulk transfer */
|
---|
254 | };
|
---|
255 |
|
---|
256 |
|
---|
257 | /* USB CDC device Configuration Descriptor */
|
---|
258 | __ALIGN_BEGIN static uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
|
---|
259 | {
|
---|
260 | /* Configuration Descriptor */
|
---|
261 | 0x09, /* bLength: Configuration Descriptor size */
|
---|
262 | USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
|
---|
263 | USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */
|
---|
264 | 0x00,
|
---|
265 | 0x02, /* bNumInterfaces: 2 interface */
|
---|
266 | 0x01, /* bConfigurationValue: Configuration value */
|
---|
267 | 0x00, /* iConfiguration: Index of string descriptor describing the configuration */
|
---|
268 | #if (USBD_SELF_POWERED == 1U)
|
---|
269 | 0xC0, /* bmAttributes: Bus Powered according to user configuration */
|
---|
270 | #else
|
---|
271 | 0x80, /* bmAttributes: Bus Powered according to user configuration */
|
---|
272 | #endif
|
---|
273 | USBD_MAX_POWER, /* MaxPower 100 mA */
|
---|
274 |
|
---|
275 | /*---------------------------------------------------------------------------*/
|
---|
276 |
|
---|
277 | /* Interface Descriptor */
|
---|
278 | 0x09, /* bLength: Interface Descriptor size */
|
---|
279 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
|
---|
280 | /* Interface descriptor type */
|
---|
281 | 0x00, /* bInterfaceNumber: Number of Interface */
|
---|
282 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
283 | 0x01, /* bNumEndpoints: One endpoints used */
|
---|
284 | 0x02, /* bInterfaceClass: Communication Interface Class */
|
---|
285 | 0x02, /* bInterfaceSubClass: Abstract Control Model */
|
---|
286 | 0x01, /* bInterfaceProtocol: Common AT commands */
|
---|
287 | 0x00, /* iInterface: */
|
---|
288 |
|
---|
289 | /* Header Functional Descriptor */
|
---|
290 | 0x05, /* bLength: Endpoint Descriptor size */
|
---|
291 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
292 | 0x00, /* bDescriptorSubtype: Header Func Desc */
|
---|
293 | 0x10, /* bcdCDC: spec release number */
|
---|
294 | 0x01,
|
---|
295 |
|
---|
296 | /* Call Management Functional Descriptor */
|
---|
297 | 0x05, /* bFunctionLength */
|
---|
298 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
299 | 0x01, /* bDescriptorSubtype: Call Management Func Desc */
|
---|
300 | 0x00, /* bmCapabilities: D0+D1 */
|
---|
301 | 0x01, /* bDataInterface: 1 */
|
---|
302 |
|
---|
303 | /* ACM Functional Descriptor */
|
---|
304 | 0x04, /* bFunctionLength */
|
---|
305 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
306 | 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
|
---|
307 | 0x02, /* bmCapabilities */
|
---|
308 |
|
---|
309 | /* Union Functional Descriptor */
|
---|
310 | 0x05, /* bFunctionLength */
|
---|
311 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
312 | 0x06, /* bDescriptorSubtype: Union func desc */
|
---|
313 | 0x00, /* bMasterInterface: Communication class interface */
|
---|
314 | 0x01, /* bSlaveInterface0: Data Class Interface */
|
---|
315 |
|
---|
316 | /* Endpoint 2 Descriptor */
|
---|
317 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
318 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
319 | CDC_CMD_EP, /* bEndpointAddress */
|
---|
320 | 0x03, /* bmAttributes: Interrupt */
|
---|
321 | LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
322 | HIBYTE(CDC_CMD_PACKET_SIZE),
|
---|
323 | CDC_FS_BINTERVAL, /* bInterval: */
|
---|
324 | /*---------------------------------------------------------------------------*/
|
---|
325 |
|
---|
326 | /* Data class interface descriptor */
|
---|
327 | 0x09, /* bLength: Endpoint Descriptor size */
|
---|
328 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
|
---|
329 | 0x01, /* bInterfaceNumber: Number of Interface */
|
---|
330 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
331 | 0x02, /* bNumEndpoints: Two endpoints used */
|
---|
332 | 0x0A, /* bInterfaceClass: CDC */
|
---|
333 | 0x00, /* bInterfaceSubClass: */
|
---|
334 | 0x00, /* bInterfaceProtocol: */
|
---|
335 | 0x00, /* iInterface: */
|
---|
336 |
|
---|
337 | /* Endpoint OUT Descriptor */
|
---|
338 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
339 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
340 | CDC_OUT_EP, /* bEndpointAddress */
|
---|
341 | 0x02, /* bmAttributes: Bulk */
|
---|
342 | LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
343 | HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
|
---|
344 | 0x00, /* bInterval: ignore for Bulk transfer */
|
---|
345 |
|
---|
346 | /* Endpoint IN Descriptor */
|
---|
347 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
348 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
349 | CDC_IN_EP, /* bEndpointAddress */
|
---|
350 | 0x02, /* bmAttributes: Bulk */
|
---|
351 | LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
352 | HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
|
---|
353 | 0x00 /* bInterval: ignore for Bulk transfer */
|
---|
354 | };
|
---|
355 |
|
---|
356 | __ALIGN_BEGIN static uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
|
---|
357 | {
|
---|
358 | 0x09, /* bLength: Configuration Descriptor size */
|
---|
359 | USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
|
---|
360 | USB_CDC_CONFIG_DESC_SIZ,
|
---|
361 | 0x00,
|
---|
362 | 0x02, /* bNumInterfaces: 2 interfaces */
|
---|
363 | 0x01, /* bConfigurationValue: */
|
---|
364 | 0x04, /* iConfiguration: */
|
---|
365 | #if (USBD_SELF_POWERED == 1U)
|
---|
366 | 0xC0, /* bmAttributes: Bus Powered according to user configuration */
|
---|
367 | #else
|
---|
368 | 0x80, /* bmAttributes: Bus Powered according to user configuration */
|
---|
369 | #endif
|
---|
370 | USBD_MAX_POWER, /* MaxPower 100 mA */
|
---|
371 |
|
---|
372 | /*Interface Descriptor */
|
---|
373 | 0x09, /* bLength: Interface Descriptor size */
|
---|
374 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
|
---|
375 | /* Interface descriptor type */
|
---|
376 | 0x00, /* bInterfaceNumber: Number of Interface */
|
---|
377 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
378 | 0x01, /* bNumEndpoints: One endpoints used */
|
---|
379 | 0x02, /* bInterfaceClass: Communication Interface Class */
|
---|
380 | 0x02, /* bInterfaceSubClass: Abstract Control Model */
|
---|
381 | 0x01, /* bInterfaceProtocol: Common AT commands */
|
---|
382 | 0x00, /* iInterface: */
|
---|
383 |
|
---|
384 | /* Header Functional Descriptor */
|
---|
385 | 0x05, /* bLength: Endpoint Descriptor size */
|
---|
386 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
387 | 0x00, /* bDescriptorSubtype: Header Func Desc */
|
---|
388 | 0x10, /* bcdCDC: spec release number */
|
---|
389 | 0x01,
|
---|
390 |
|
---|
391 | /*Call Management Functional Descriptor*/
|
---|
392 | 0x05, /* bFunctionLength */
|
---|
393 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
394 | 0x01, /* bDescriptorSubtype: Call Management Func Desc */
|
---|
395 | 0x00, /* bmCapabilities: D0+D1 */
|
---|
396 | 0x01, /* bDataInterface: 1 */
|
---|
397 |
|
---|
398 | /*ACM Functional Descriptor*/
|
---|
399 | 0x04, /* bFunctionLength */
|
---|
400 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
401 | 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
|
---|
402 | 0x02, /* bmCapabilities */
|
---|
403 |
|
---|
404 | /*Union Functional Descriptor*/
|
---|
405 | 0x05, /* bFunctionLength */
|
---|
406 | 0x24, /* bDescriptorType: CS_INTERFACE */
|
---|
407 | 0x06, /* bDescriptorSubtype: Union func desc */
|
---|
408 | 0x00, /* bMasterInterface: Communication class interface */
|
---|
409 | 0x01, /* bSlaveInterface0: Data Class Interface */
|
---|
410 |
|
---|
411 | /*Endpoint 2 Descriptor*/
|
---|
412 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
413 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
414 | CDC_CMD_EP, /* bEndpointAddress */
|
---|
415 | 0x03, /* bmAttributes: Interrupt */
|
---|
416 | LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
|
---|
417 | HIBYTE(CDC_CMD_PACKET_SIZE),
|
---|
418 | CDC_FS_BINTERVAL, /* bInterval: */
|
---|
419 |
|
---|
420 | /*---------------------------------------------------------------------------*/
|
---|
421 |
|
---|
422 | /*Data class interface descriptor*/
|
---|
423 | 0x09, /* bLength: Endpoint Descriptor size */
|
---|
424 | USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
|
---|
425 | 0x01, /* bInterfaceNumber: Number of Interface */
|
---|
426 | 0x00, /* bAlternateSetting: Alternate setting */
|
---|
427 | 0x02, /* bNumEndpoints: Two endpoints used */
|
---|
428 | 0x0A, /* bInterfaceClass: CDC */
|
---|
429 | 0x00, /* bInterfaceSubClass: */
|
---|
430 | 0x00, /* bInterfaceProtocol: */
|
---|
431 | 0x00, /* iInterface: */
|
---|
432 |
|
---|
433 | /*Endpoint OUT Descriptor*/
|
---|
434 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
435 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
436 | CDC_OUT_EP, /* bEndpointAddress */
|
---|
437 | 0x02, /* bmAttributes: Bulk */
|
---|
438 | 0x40, /* wMaxPacketSize: */
|
---|
439 | 0x00,
|
---|
440 | 0x00, /* bInterval: ignore for Bulk transfer */
|
---|
441 |
|
---|
442 | /*Endpoint IN Descriptor*/
|
---|
443 | 0x07, /* bLength: Endpoint Descriptor size */
|
---|
444 | USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
|
---|
445 | CDC_IN_EP, /* bEndpointAddress */
|
---|
446 | 0x02, /* bmAttributes: Bulk */
|
---|
447 | 0x40, /* wMaxPacketSize: */
|
---|
448 | 0x00,
|
---|
449 | 0x00 /* bInterval */
|
---|
450 | };
|
---|
451 |
|
---|
452 | /**
|
---|
453 | * @}
|
---|
454 | */
|
---|
455 |
|
---|
456 | /** @defgroup USBD_CDC_Private_Functions
|
---|
457 | * @{
|
---|
458 | */
|
---|
459 |
|
---|
460 | /**
|
---|
461 | * @brief USBD_CDC_Init
|
---|
462 | * Initialize the CDC interface
|
---|
463 | * @param pdev: device instance
|
---|
464 | * @param cfgidx: Configuration index
|
---|
465 | * @retval status
|
---|
466 | */
|
---|
467 | static uint8_t USBD_CDC_Init(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
|
---|
468 | {
|
---|
469 | UNUSED(cfgidx);
|
---|
470 | USBD_CDC_HandleTypeDef *hcdc;
|
---|
471 |
|
---|
472 | hcdc = USBD_malloc(sizeof(USBD_CDC_HandleTypeDef));
|
---|
473 |
|
---|
474 | if (hcdc == NULL)
|
---|
475 | {
|
---|
476 | pdev->pClassData = NULL;
|
---|
477 | return (uint8_t)USBD_EMEM;
|
---|
478 | }
|
---|
479 |
|
---|
480 | pdev->pClassData = (void *)hcdc;
|
---|
481 |
|
---|
482 | if (pdev->dev_speed == USBD_SPEED_HIGH)
|
---|
483 | {
|
---|
484 | /* Open EP IN */
|
---|
485 | (void)USBD_LL_OpenEP(pdev, CDC_IN_EP, USBD_EP_TYPE_BULK,
|
---|
486 | CDC_DATA_HS_IN_PACKET_SIZE);
|
---|
487 |
|
---|
488 | pdev->ep_in[CDC_IN_EP & 0xFU].is_used = 1U;
|
---|
489 |
|
---|
490 | /* Open EP OUT */
|
---|
491 | (void)USBD_LL_OpenEP(pdev, CDC_OUT_EP, USBD_EP_TYPE_BULK,
|
---|
492 | CDC_DATA_HS_OUT_PACKET_SIZE);
|
---|
493 |
|
---|
494 | pdev->ep_out[CDC_OUT_EP & 0xFU].is_used = 1U;
|
---|
495 |
|
---|
496 | /* Set bInterval for CDC CMD Endpoint */
|
---|
497 | pdev->ep_in[CDC_CMD_EP & 0xFU].bInterval = CDC_HS_BINTERVAL;
|
---|
498 | }
|
---|
499 | else
|
---|
500 | {
|
---|
501 | /* Open EP IN */
|
---|
502 | (void)USBD_LL_OpenEP(pdev, CDC_IN_EP, USBD_EP_TYPE_BULK,
|
---|
503 | CDC_DATA_FS_IN_PACKET_SIZE);
|
---|
504 |
|
---|
505 | pdev->ep_in[CDC_IN_EP & 0xFU].is_used = 1U;
|
---|
506 |
|
---|
507 | /* Open EP OUT */
|
---|
508 | (void)USBD_LL_OpenEP(pdev, CDC_OUT_EP, USBD_EP_TYPE_BULK,
|
---|
509 | CDC_DATA_FS_OUT_PACKET_SIZE);
|
---|
510 |
|
---|
511 | pdev->ep_out[CDC_OUT_EP & 0xFU].is_used = 1U;
|
---|
512 |
|
---|
513 | /* Set bInterval for CMD Endpoint */
|
---|
514 | pdev->ep_in[CDC_CMD_EP & 0xFU].bInterval = CDC_FS_BINTERVAL;
|
---|
515 | }
|
---|
516 |
|
---|
517 | /* Open Command IN EP */
|
---|
518 | (void)USBD_LL_OpenEP(pdev, CDC_CMD_EP, USBD_EP_TYPE_INTR, CDC_CMD_PACKET_SIZE);
|
---|
519 | pdev->ep_in[CDC_CMD_EP & 0xFU].is_used = 1U;
|
---|
520 |
|
---|
521 | /* Init physical Interface components */
|
---|
522 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Init();
|
---|
523 |
|
---|
524 | /* Init Xfer states */
|
---|
525 | hcdc->TxState = 0U;
|
---|
526 | hcdc->RxState = 0U;
|
---|
527 |
|
---|
528 | if (pdev->dev_speed == USBD_SPEED_HIGH)
|
---|
529 | {
|
---|
530 | /* Prepare Out endpoint to receive next packet */
|
---|
531 | (void)USBD_LL_PrepareReceive(pdev, CDC_OUT_EP, hcdc->RxBuffer,
|
---|
532 | CDC_DATA_HS_OUT_PACKET_SIZE);
|
---|
533 | }
|
---|
534 | else
|
---|
535 | {
|
---|
536 | /* Prepare Out endpoint to receive next packet */
|
---|
537 | (void)USBD_LL_PrepareReceive(pdev, CDC_OUT_EP, hcdc->RxBuffer,
|
---|
538 | CDC_DATA_FS_OUT_PACKET_SIZE);
|
---|
539 | }
|
---|
540 |
|
---|
541 | return (uint8_t)USBD_OK;
|
---|
542 | }
|
---|
543 |
|
---|
544 | /**
|
---|
545 | * @brief USBD_CDC_Init
|
---|
546 | * DeInitialize the CDC layer
|
---|
547 | * @param pdev: device instance
|
---|
548 | * @param cfgidx: Configuration index
|
---|
549 | * @retval status
|
---|
550 | */
|
---|
551 | static uint8_t USBD_CDC_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
|
---|
552 | {
|
---|
553 | UNUSED(cfgidx);
|
---|
554 |
|
---|
555 | /* Close EP IN */
|
---|
556 | (void)USBD_LL_CloseEP(pdev, CDC_IN_EP);
|
---|
557 | pdev->ep_in[CDC_IN_EP & 0xFU].is_used = 0U;
|
---|
558 |
|
---|
559 | /* Close EP OUT */
|
---|
560 | (void)USBD_LL_CloseEP(pdev, CDC_OUT_EP);
|
---|
561 | pdev->ep_out[CDC_OUT_EP & 0xFU].is_used = 0U;
|
---|
562 |
|
---|
563 | /* Close Command IN EP */
|
---|
564 | (void)USBD_LL_CloseEP(pdev, CDC_CMD_EP);
|
---|
565 | pdev->ep_in[CDC_CMD_EP & 0xFU].is_used = 0U;
|
---|
566 | pdev->ep_in[CDC_CMD_EP & 0xFU].bInterval = 0U;
|
---|
567 |
|
---|
568 | /* DeInit physical Interface components */
|
---|
569 | if (pdev->pClassData != NULL)
|
---|
570 | {
|
---|
571 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->DeInit();
|
---|
572 | (void)USBD_free(pdev->pClassData);
|
---|
573 | pdev->pClassData = NULL;
|
---|
574 | }
|
---|
575 |
|
---|
576 | return (uint8_t)USBD_OK;
|
---|
577 | }
|
---|
578 |
|
---|
579 | /**
|
---|
580 | * @brief USBD_CDC_Setup
|
---|
581 | * Handle the CDC specific requests
|
---|
582 | * @param pdev: instance
|
---|
583 | * @param req: usb requests
|
---|
584 | * @retval status
|
---|
585 | */
|
---|
586 | static uint8_t USBD_CDC_Setup(USBD_HandleTypeDef *pdev,
|
---|
587 | USBD_SetupReqTypedef *req)
|
---|
588 | {
|
---|
589 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
590 | uint16_t len;
|
---|
591 | uint8_t ifalt = 0U;
|
---|
592 | uint16_t status_info = 0U;
|
---|
593 | USBD_StatusTypeDef ret = USBD_OK;
|
---|
594 |
|
---|
595 | if (hcdc == NULL)
|
---|
596 | {
|
---|
597 | return (uint8_t)USBD_FAIL;
|
---|
598 | }
|
---|
599 |
|
---|
600 | switch (req->bmRequest & USB_REQ_TYPE_MASK)
|
---|
601 | {
|
---|
602 | case USB_REQ_TYPE_CLASS:
|
---|
603 | if (req->wLength != 0U)
|
---|
604 | {
|
---|
605 | if ((req->bmRequest & 0x80U) != 0U)
|
---|
606 | {
|
---|
607 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
|
---|
608 | (uint8_t *)hcdc->data,
|
---|
609 | req->wLength);
|
---|
610 |
|
---|
611 | len = MIN(CDC_REQ_MAX_DATA_SIZE, req->wLength);
|
---|
612 | (void)USBD_CtlSendData(pdev, (uint8_t *)hcdc->data, len);
|
---|
613 | }
|
---|
614 | else
|
---|
615 | {
|
---|
616 | hcdc->CmdOpCode = req->bRequest;
|
---|
617 | hcdc->CmdLength = (uint8_t)req->wLength;
|
---|
618 |
|
---|
619 | (void)USBD_CtlPrepareRx(pdev, (uint8_t *)hcdc->data, req->wLength);
|
---|
620 | }
|
---|
621 | }
|
---|
622 | else
|
---|
623 | {
|
---|
624 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
|
---|
625 | (uint8_t *)req, 0U);
|
---|
626 | }
|
---|
627 | break;
|
---|
628 |
|
---|
629 | case USB_REQ_TYPE_STANDARD:
|
---|
630 | switch (req->bRequest)
|
---|
631 | {
|
---|
632 | case USB_REQ_GET_STATUS:
|
---|
633 | if (pdev->dev_state == USBD_STATE_CONFIGURED)
|
---|
634 | {
|
---|
635 | (void)USBD_CtlSendData(pdev, (uint8_t *)&status_info, 2U);
|
---|
636 | }
|
---|
637 | else
|
---|
638 | {
|
---|
639 | USBD_CtlError(pdev, req);
|
---|
640 | ret = USBD_FAIL;
|
---|
641 | }
|
---|
642 | break;
|
---|
643 |
|
---|
644 | case USB_REQ_GET_INTERFACE:
|
---|
645 | if (pdev->dev_state == USBD_STATE_CONFIGURED)
|
---|
646 | {
|
---|
647 | (void)USBD_CtlSendData(pdev, &ifalt, 1U);
|
---|
648 | }
|
---|
649 | else
|
---|
650 | {
|
---|
651 | USBD_CtlError(pdev, req);
|
---|
652 | ret = USBD_FAIL;
|
---|
653 | }
|
---|
654 | break;
|
---|
655 |
|
---|
656 | case USB_REQ_SET_INTERFACE:
|
---|
657 | if (pdev->dev_state != USBD_STATE_CONFIGURED)
|
---|
658 | {
|
---|
659 | USBD_CtlError(pdev, req);
|
---|
660 | ret = USBD_FAIL;
|
---|
661 | }
|
---|
662 | break;
|
---|
663 |
|
---|
664 | case USB_REQ_CLEAR_FEATURE:
|
---|
665 | break;
|
---|
666 |
|
---|
667 | default:
|
---|
668 | USBD_CtlError(pdev, req);
|
---|
669 | ret = USBD_FAIL;
|
---|
670 | break;
|
---|
671 | }
|
---|
672 | break;
|
---|
673 |
|
---|
674 | default:
|
---|
675 | USBD_CtlError(pdev, req);
|
---|
676 | ret = USBD_FAIL;
|
---|
677 | break;
|
---|
678 | }
|
---|
679 |
|
---|
680 | return (uint8_t)ret;
|
---|
681 | }
|
---|
682 |
|
---|
683 | /**
|
---|
684 | * @brief USBD_CDC_DataIn
|
---|
685 | * Data sent on non-control IN endpoint
|
---|
686 | * @param pdev: device instance
|
---|
687 | * @param epnum: endpoint number
|
---|
688 | * @retval status
|
---|
689 | */
|
---|
690 | static uint8_t USBD_CDC_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum)
|
---|
691 | {
|
---|
692 | USBD_CDC_HandleTypeDef *hcdc;
|
---|
693 | PCD_HandleTypeDef *hpcd = pdev->pData;
|
---|
694 |
|
---|
695 | if (pdev->pClassData == NULL)
|
---|
696 | {
|
---|
697 | return (uint8_t)USBD_FAIL;
|
---|
698 | }
|
---|
699 |
|
---|
700 | hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
701 |
|
---|
702 | if ((pdev->ep_in[epnum].total_length > 0U) &&
|
---|
703 | ((pdev->ep_in[epnum].total_length % hpcd->IN_ep[epnum].maxpacket) == 0U))
|
---|
704 | {
|
---|
705 | /* Update the packet total length */
|
---|
706 | pdev->ep_in[epnum].total_length = 0U;
|
---|
707 |
|
---|
708 | /* Send ZLP */
|
---|
709 | (void)USBD_LL_Transmit(pdev, epnum, NULL, 0U);
|
---|
710 | }
|
---|
711 | else
|
---|
712 | {
|
---|
713 | hcdc->TxState = 0U;
|
---|
714 |
|
---|
715 | if (((USBD_CDC_ItfTypeDef *)pdev->pUserData)->TransmitCplt != NULL)
|
---|
716 | {
|
---|
717 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->TransmitCplt(hcdc->TxBuffer, &hcdc->TxLength, epnum);
|
---|
718 | }
|
---|
719 | }
|
---|
720 |
|
---|
721 | return (uint8_t)USBD_OK;
|
---|
722 | }
|
---|
723 |
|
---|
724 | /**
|
---|
725 | * @brief USBD_CDC_DataOut
|
---|
726 | * Data received on non-control Out endpoint
|
---|
727 | * @param pdev: device instance
|
---|
728 | * @param epnum: endpoint number
|
---|
729 | * @retval status
|
---|
730 | */
|
---|
731 | static uint8_t USBD_CDC_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum)
|
---|
732 | {
|
---|
733 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
734 |
|
---|
735 | if (pdev->pClassData == NULL)
|
---|
736 | {
|
---|
737 | return (uint8_t)USBD_FAIL;
|
---|
738 | }
|
---|
739 |
|
---|
740 | /* Get the received data length */
|
---|
741 | hcdc->RxLength = USBD_LL_GetRxDataSize(pdev, epnum);
|
---|
742 |
|
---|
743 | /* USB data will be immediately processed, this allow next USB traffic being
|
---|
744 | NAKed till the end of the application Xfer */
|
---|
745 |
|
---|
746 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Receive(hcdc->RxBuffer, &hcdc->RxLength);
|
---|
747 |
|
---|
748 | return (uint8_t)USBD_OK;
|
---|
749 | }
|
---|
750 |
|
---|
751 | /**
|
---|
752 | * @brief USBD_CDC_EP0_RxReady
|
---|
753 | * Handle EP0 Rx Ready event
|
---|
754 | * @param pdev: device instance
|
---|
755 | * @retval status
|
---|
756 | */
|
---|
757 | static uint8_t USBD_CDC_EP0_RxReady(USBD_HandleTypeDef *pdev)
|
---|
758 | {
|
---|
759 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
760 |
|
---|
761 | if (hcdc == NULL)
|
---|
762 | {
|
---|
763 | return (uint8_t)USBD_FAIL;
|
---|
764 | }
|
---|
765 |
|
---|
766 | if ((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFFU))
|
---|
767 | {
|
---|
768 | ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(hcdc->CmdOpCode,
|
---|
769 | (uint8_t *)hcdc->data,
|
---|
770 | (uint16_t)hcdc->CmdLength);
|
---|
771 | hcdc->CmdOpCode = 0xFFU;
|
---|
772 | }
|
---|
773 |
|
---|
774 | return (uint8_t)USBD_OK;
|
---|
775 | }
|
---|
776 |
|
---|
777 | /**
|
---|
778 | * @brief USBD_CDC_GetFSCfgDesc
|
---|
779 | * Return configuration descriptor
|
---|
780 | * @param speed : current device speed
|
---|
781 | * @param length : pointer data length
|
---|
782 | * @retval pointer to descriptor buffer
|
---|
783 | */
|
---|
784 | static uint8_t *USBD_CDC_GetFSCfgDesc(uint16_t *length)
|
---|
785 | {
|
---|
786 | *length = (uint16_t)sizeof(USBD_CDC_CfgFSDesc);
|
---|
787 |
|
---|
788 | return USBD_CDC_CfgFSDesc;
|
---|
789 | }
|
---|
790 |
|
---|
791 | /**
|
---|
792 | * @brief USBD_CDC_GetHSCfgDesc
|
---|
793 | * Return configuration descriptor
|
---|
794 | * @param speed : current device speed
|
---|
795 | * @param length : pointer data length
|
---|
796 | * @retval pointer to descriptor buffer
|
---|
797 | */
|
---|
798 | static uint8_t *USBD_CDC_GetHSCfgDesc(uint16_t *length)
|
---|
799 | {
|
---|
800 | *length = (uint16_t)sizeof(USBD_CDC_CfgHSDesc);
|
---|
801 |
|
---|
802 | return USBD_CDC_CfgHSDesc;
|
---|
803 | }
|
---|
804 |
|
---|
805 | /**
|
---|
806 | * @brief USBD_CDC_GetOtherSpeedCfgDesc
|
---|
807 | * Return configuration descriptor
|
---|
808 | * @param speed : current device speed
|
---|
809 | * @param length : pointer data length
|
---|
810 | * @retval pointer to descriptor buffer
|
---|
811 | */
|
---|
812 | static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc(uint16_t *length)
|
---|
813 | {
|
---|
814 | *length = (uint16_t)sizeof(USBD_CDC_OtherSpeedCfgDesc);
|
---|
815 |
|
---|
816 | return USBD_CDC_OtherSpeedCfgDesc;
|
---|
817 | }
|
---|
818 |
|
---|
819 | /**
|
---|
820 | * @brief USBD_CDC_GetDeviceQualifierDescriptor
|
---|
821 | * return Device Qualifier descriptor
|
---|
822 | * @param length : pointer data length
|
---|
823 | * @retval pointer to descriptor buffer
|
---|
824 | */
|
---|
825 | uint8_t *USBD_CDC_GetDeviceQualifierDescriptor(uint16_t *length)
|
---|
826 | {
|
---|
827 | *length = (uint16_t)sizeof(USBD_CDC_DeviceQualifierDesc);
|
---|
828 |
|
---|
829 | return USBD_CDC_DeviceQualifierDesc;
|
---|
830 | }
|
---|
831 |
|
---|
832 | /**
|
---|
833 | * @brief USBD_CDC_RegisterInterface
|
---|
834 | * @param pdev: device instance
|
---|
835 | * @param fops: CD Interface callback
|
---|
836 | * @retval status
|
---|
837 | */
|
---|
838 | uint8_t USBD_CDC_RegisterInterface(USBD_HandleTypeDef *pdev,
|
---|
839 | USBD_CDC_ItfTypeDef *fops)
|
---|
840 | {
|
---|
841 | if (fops == NULL)
|
---|
842 | {
|
---|
843 | return (uint8_t)USBD_FAIL;
|
---|
844 | }
|
---|
845 |
|
---|
846 | pdev->pUserData = fops;
|
---|
847 |
|
---|
848 | return (uint8_t)USBD_OK;
|
---|
849 | }
|
---|
850 |
|
---|
851 | /**
|
---|
852 | * @brief USBD_CDC_SetTxBuffer
|
---|
853 | * @param pdev: device instance
|
---|
854 | * @param pbuff: Tx Buffer
|
---|
855 | * @retval status
|
---|
856 | */
|
---|
857 | uint8_t USBD_CDC_SetTxBuffer(USBD_HandleTypeDef *pdev,
|
---|
858 | uint8_t *pbuff, uint32_t length)
|
---|
859 | {
|
---|
860 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
861 |
|
---|
862 | if (hcdc == NULL)
|
---|
863 | {
|
---|
864 | return (uint8_t)USBD_FAIL;
|
---|
865 | }
|
---|
866 |
|
---|
867 | hcdc->TxBuffer = pbuff;
|
---|
868 | hcdc->TxLength = length;
|
---|
869 |
|
---|
870 | return (uint8_t)USBD_OK;
|
---|
871 | }
|
---|
872 |
|
---|
873 | /**
|
---|
874 | * @brief USBD_CDC_SetRxBuffer
|
---|
875 | * @param pdev: device instance
|
---|
876 | * @param pbuff: Rx Buffer
|
---|
877 | * @retval status
|
---|
878 | */
|
---|
879 | uint8_t USBD_CDC_SetRxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff)
|
---|
880 | {
|
---|
881 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
882 |
|
---|
883 | if (hcdc == NULL)
|
---|
884 | {
|
---|
885 | return (uint8_t)USBD_FAIL;
|
---|
886 | }
|
---|
887 |
|
---|
888 | hcdc->RxBuffer = pbuff;
|
---|
889 |
|
---|
890 | return (uint8_t)USBD_OK;
|
---|
891 | }
|
---|
892 |
|
---|
893 | /**
|
---|
894 | * @brief USBD_CDC_TransmitPacket
|
---|
895 | * Transmit packet on IN endpoint
|
---|
896 | * @param pdev: device instance
|
---|
897 | * @retval status
|
---|
898 | */
|
---|
899 | uint8_t USBD_CDC_TransmitPacket(USBD_HandleTypeDef *pdev)
|
---|
900 | {
|
---|
901 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
902 | USBD_StatusTypeDef ret = USBD_BUSY;
|
---|
903 |
|
---|
904 | if (pdev->pClassData == NULL)
|
---|
905 | {
|
---|
906 | return (uint8_t)USBD_FAIL;
|
---|
907 | }
|
---|
908 |
|
---|
909 | if (hcdc->TxState == 0U)
|
---|
910 | {
|
---|
911 | /* Tx Transfer in progress */
|
---|
912 | hcdc->TxState = 1U;
|
---|
913 |
|
---|
914 | /* Update the packet total length */
|
---|
915 | pdev->ep_in[CDC_IN_EP & 0xFU].total_length = hcdc->TxLength;
|
---|
916 |
|
---|
917 | /* Transmit next packet */
|
---|
918 | (void)USBD_LL_Transmit(pdev, CDC_IN_EP, hcdc->TxBuffer, hcdc->TxLength);
|
---|
919 |
|
---|
920 | ret = USBD_OK;
|
---|
921 | }
|
---|
922 |
|
---|
923 | return (uint8_t)ret;
|
---|
924 | }
|
---|
925 |
|
---|
926 | /**
|
---|
927 | * @brief USBD_CDC_ReceivePacket
|
---|
928 | * prepare OUT Endpoint for reception
|
---|
929 | * @param pdev: device instance
|
---|
930 | * @retval status
|
---|
931 | */
|
---|
932 | uint8_t USBD_CDC_ReceivePacket(USBD_HandleTypeDef *pdev)
|
---|
933 | {
|
---|
934 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
|
---|
935 |
|
---|
936 | if (pdev->pClassData == NULL)
|
---|
937 | {
|
---|
938 | return (uint8_t)USBD_FAIL;
|
---|
939 | }
|
---|
940 |
|
---|
941 | if (pdev->dev_speed == USBD_SPEED_HIGH)
|
---|
942 | {
|
---|
943 | /* Prepare Out endpoint to receive next packet */
|
---|
944 | (void)USBD_LL_PrepareReceive(pdev, CDC_OUT_EP, hcdc->RxBuffer,
|
---|
945 | CDC_DATA_HS_OUT_PACKET_SIZE);
|
---|
946 | }
|
---|
947 | else
|
---|
948 | {
|
---|
949 | /* Prepare Out endpoint to receive next packet */
|
---|
950 | (void)USBD_LL_PrepareReceive(pdev, CDC_OUT_EP, hcdc->RxBuffer,
|
---|
951 | CDC_DATA_FS_OUT_PACKET_SIZE);
|
---|
952 | }
|
---|
953 |
|
---|
954 | return (uint8_t)USBD_OK;
|
---|
955 | }
|
---|
956 | /**
|
---|
957 | * @}
|
---|
958 | */
|
---|
959 |
|
---|
960 | /**
|
---|
961 | * @}
|
---|
962 | */
|
---|
963 |
|
---|
964 | /**
|
---|
965 | * @}
|
---|
966 | */
|
---|
967 |
|
---|
968 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
---|