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