1 /**
2 ******************************************************************************
3 * @file usbd_ioreq.c
4 * @author MCD Application Team
5 * @version V2.4.2
6 * @date 11-December-2015
7 * @brief This file provides the IO requests APIs for control endpoints.
8 ******************************************************************************
9 * @attention
10 *
11 * <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
12 *
13 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
14 * You may not use this file except in compliance with the License.
15 * You may obtain a copy of the License at:
16 *
17 * http://www.st.com/software_license_agreement_liberty_v2
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS,
21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 *
25 ******************************************************************************
26 */
27
28 /* Includes ------------------------------------------------------------------*/
29 #include "usbd_ioreq.h"
30
31 /** @addtogroup STM32_USB_DEVICE_LIBRARY
32 * @{
33 */
34
35
36 /** @defgroup USBD_IOREQ
37 * @brief control I/O requests module
38 * @{
39 */
40
41 /** @defgroup USBD_IOREQ_Private_TypesDefinitions
42 * @{
43 */
44 /**
45 * @}
46 */
47
48
49 /** @defgroup USBD_IOREQ_Private_Defines
50 * @{
51 */
52
53 /**
54 * @}
55 */
56
57
58 /** @defgroup USBD_IOREQ_Private_Macros
59 * @{
60 */
61 /**
62 * @}
63 */
64
65
66 /** @defgroup USBD_IOREQ_Private_Variables
67 * @{
68 */
69
70 /**
71 * @}
72 */
73
74
75 /** @defgroup USBD_IOREQ_Private_FunctionPrototypes
76 * @{
77 */
78 /**
79 * @}
80 */
81
82
83 /** @defgroup USBD_IOREQ_Private_Functions
84 * @{
85 */
86
87 /**
88 * @brief USBD_CtlSendData
89 * send data on the ctl pipe
90 * @param pdev: device instance
91 * @param buff: pointer to data buffer
92 * @param len: length of data to be sent
93 * @retval status
94 */
USBD_CtlSendData(USBD_HandleTypeDef * pdev,uint8_t * pbuf,uint16_t len)95 USBD_StatusTypeDef USBD_CtlSendData (USBD_HandleTypeDef *pdev,
96 uint8_t *pbuf,
97 uint16_t len)
98 {
99 /* Set EP0 State */
100 pdev->ep0_state = USBD_EP0_DATA_IN;
101 pdev->ep_in[0].total_length = len;
102 pdev->ep_in[0].rem_length = len;
103 /* Start the transfer */
104 USBD_LL_Transmit (pdev, 0x00, pbuf, len);
105
106 return USBD_OK;
107 }
108
109 /**
110 * @brief USBD_CtlContinueSendData
111 * continue sending data on the ctl pipe
112 * @param pdev: device instance
113 * @param buff: pointer to data buffer
114 * @param len: length of data to be sent
115 * @retval status
116 */
USBD_CtlContinueSendData(USBD_HandleTypeDef * pdev,uint8_t * pbuf,uint16_t len)117 USBD_StatusTypeDef USBD_CtlContinueSendData (USBD_HandleTypeDef *pdev,
118 uint8_t *pbuf,
119 uint16_t len)
120 {
121 /* Start the next transfer */
122 USBD_LL_Transmit (pdev, 0x00, pbuf, len);
123
124 return USBD_OK;
125 }
126
127 /**
128 * @brief USBD_CtlPrepareRx
129 * receive data on the ctl pipe
130 * @param pdev: device instance
131 * @param buff: pointer to data buffer
132 * @param len: length of data to be received
133 * @retval status
134 */
USBD_CtlPrepareRx(USBD_HandleTypeDef * pdev,uint8_t * pbuf,uint16_t len)135 USBD_StatusTypeDef USBD_CtlPrepareRx (USBD_HandleTypeDef *pdev,
136 uint8_t *pbuf,
137 uint16_t len)
138 {
139 /* Set EP0 State */
140 pdev->ep0_state = USBD_EP0_DATA_OUT;
141 pdev->ep_out[0].total_length = len;
142 pdev->ep_out[0].rem_length = len;
143 /* Start the transfer */
144 USBD_LL_PrepareReceive (pdev,
145 0,
146 pbuf,
147 len);
148
149 return USBD_OK;
150 }
151
152 /**
153 * @brief USBD_CtlContinueRx
154 * continue receive data on the ctl pipe
155 * @param pdev: device instance
156 * @param buff: pointer to data buffer
157 * @param len: length of data to be received
158 * @retval status
159 */
USBD_CtlContinueRx(USBD_HandleTypeDef * pdev,uint8_t * pbuf,uint16_t len)160 USBD_StatusTypeDef USBD_CtlContinueRx (USBD_HandleTypeDef *pdev,
161 uint8_t *pbuf,
162 uint16_t len)
163 {
164
165 USBD_LL_PrepareReceive (pdev,
166 0,
167 pbuf,
168 len);
169 return USBD_OK;
170 }
171 /**
172 * @brief USBD_CtlSendStatus
173 * send zero lzngth packet on the ctl pipe
174 * @param pdev: device instance
175 * @retval status
176 */
USBD_CtlSendStatus(USBD_HandleTypeDef * pdev)177 USBD_StatusTypeDef USBD_CtlSendStatus (USBD_HandleTypeDef *pdev)
178 {
179
180 /* Set EP0 State */
181 pdev->ep0_state = USBD_EP0_STATUS_IN;
182
183 /* Start the transfer */
184 USBD_LL_Transmit (pdev, 0x00, NULL, 0);
185
186 return USBD_OK;
187 }
188
189 /**
190 * @brief USBD_CtlReceiveStatus
191 * receive zero lzngth packet on the ctl pipe
192 * @param pdev: device instance
193 * @retval status
194 */
USBD_CtlReceiveStatus(USBD_HandleTypeDef * pdev)195 USBD_StatusTypeDef USBD_CtlReceiveStatus (USBD_HandleTypeDef *pdev)
196 {
197 /* Set EP0 State */
198 pdev->ep0_state = USBD_EP0_STATUS_OUT;
199
200 /* Start the transfer */
201 USBD_LL_PrepareReceive ( pdev,
202 0,
203 NULL,
204 0);
205
206 return USBD_OK;
207 }
208
209
210 /**
211 * @brief USBD_GetRxCount
212 * returns the received data length
213 * @param pdev: device instance
214 * @param ep_addr: endpoint address
215 * @retval Rx Data blength
216 */
USBD_GetRxCount(USBD_HandleTypeDef * pdev,uint8_t ep_addr)217 uint16_t USBD_GetRxCount (USBD_HandleTypeDef *pdev , uint8_t ep_addr)
218 {
219 return USBD_LL_GetRxDataSize(pdev, ep_addr);
220 }
221
222 /**
223 * @}
224 */
225
226
227 /**
228 * @}
229 */
230
231
232 /**
233 * @}
234 */
235
236 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
237
