usbd_ioreq.c

00001 /**
00002   ******************************************************************************
00003   * @file    usbd_ioreq.c
00004   * @author  MCD Application Team
00005   * @version V2.4.2
00006   * @date    11-December-2015
00007   * @brief   This file provides the IO requests APIs for control endpoints.
00008   ******************************************************************************
00009   * @attention
00010   *
00011   * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
00012   *
00013   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
00014   * You may not use this file except in compliance with the License.
00015   * You may obtain a copy of the License at:
00016   *
00017   *        http://www.st.com/software_license_agreement_liberty_v2
00018   *
00019   * Unless required by applicable law or agreed to in writing, software 
00020   * distributed under the License is distributed on an "AS IS" BASIS, 
00021   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00022   * See the License for the specific language governing permissions and
00023   * limitations under the License.
00024   *
00025   ******************************************************************************
00026   */ 
00027 
00028 /* Includes ------------------------------------------------------------------*/
00029 #include "usbd_ioreq.h"
00030 
00031 /** @addtogroup STM32_USB_DEVICE_LIBRARY
00032   * @{
00033   */
00034 
00035 
00036 /** @defgroup USBD_IOREQ 
00037   * @brief control I/O requests module
00038   * @{
00039   */ 
00040 
00041 /** @defgroup USBD_IOREQ_Private_TypesDefinitions
00042   * @{
00043   */ 
00044 /**
00045   * @}
00046   */ 
00047 
00048 
00049 /** @defgroup USBD_IOREQ_Private_Defines
00050   * @{
00051   */ 
00052 
00053 /**
00054   * @}
00055   */ 
00056 
00057 
00058 /** @defgroup USBD_IOREQ_Private_Macros
00059   * @{
00060   */ 
00061 /**
00062   * @}
00063   */ 
00064 
00065 
00066 /** @defgroup USBD_IOREQ_Private_Variables
00067   * @{
00068   */ 
00069 
00070 /**
00071   * @}
00072   */ 
00073 
00074 
00075 /** @defgroup USBD_IOREQ_Private_FunctionPrototypes
00076   * @{
00077   */ 
00078 /**
00079   * @}
00080   */ 
00081 
00082 
00083 /** @defgroup USBD_IOREQ_Private_Functions
00084   * @{
00085   */ 
00086 
00087 /**
00088 * @brief  USBD_CtlSendData
00089 *         send data on the ctl pipe
00090 * @param  pdev: device instance
00091 * @param  buff: pointer to data buffer
00092 * @param  len: length of data to be sent
00093 * @retval status
00094 */
00095 USBD_StatusTypeDef  USBD_CtlSendData (USBD_HandleTypeDef  *pdev, 
00096                                uint8_t *pbuf,
00097                                uint16_t len)
00098 {
00099   /* Set EP0 State */
00100   pdev->ep0_state          = USBD_EP0_DATA_IN;                                      
00101   pdev->ep_in[0].total_length = len;
00102   pdev->ep_in[0].rem_length   = len;
00103  /* Start the transfer */
00104   USBD_LL_Transmit (pdev, 0x00, pbuf, len);  
00105   
00106   return USBD_OK;
00107 }
00108 
00109 /**
00110 * @brief  USBD_CtlContinueSendData
00111 *         continue sending data on the ctl pipe
00112 * @param  pdev: device instance
00113 * @param  buff: pointer to data buffer
00114 * @param  len: length of data to be sent
00115 * @retval status
00116 */
00117 USBD_StatusTypeDef  USBD_CtlContinueSendData (USBD_HandleTypeDef  *pdev, 
00118                                        uint8_t *pbuf,
00119                                        uint16_t len)
00120 {
00121  /* Start the next transfer */
00122   USBD_LL_Transmit (pdev, 0x00, pbuf, len);   
00123   
00124   return USBD_OK;
00125 }
00126 
00127 /**
00128 * @brief  USBD_CtlPrepareRx
00129 *         receive data on the ctl pipe
00130 * @param  pdev: device instance
00131 * @param  buff: pointer to data buffer
00132 * @param  len: length of data to be received
00133 * @retval status
00134 */
00135 USBD_StatusTypeDef  USBD_CtlPrepareRx (USBD_HandleTypeDef  *pdev,
00136                                   uint8_t *pbuf,                                  
00137                                   uint16_t len)
00138 {
00139   /* Set EP0 State */
00140   pdev->ep0_state = USBD_EP0_DATA_OUT; 
00141   pdev->ep_out[0].total_length = len;
00142   pdev->ep_out[0].rem_length   = len;
00143   /* Start the transfer */
00144   USBD_LL_PrepareReceive (pdev,
00145                           0,
00146                           pbuf,
00147                          len);
00148   
00149   return USBD_OK;
00150 }
00151 
00152 /**
00153 * @brief  USBD_CtlContinueRx
00154 *         continue receive data on the ctl pipe
00155 * @param  pdev: device instance
00156 * @param  buff: pointer to data buffer
00157 * @param  len: length of data to be received
00158 * @retval status
00159 */
00160 USBD_StatusTypeDef  USBD_CtlContinueRx (USBD_HandleTypeDef  *pdev, 
00161                                           uint8_t *pbuf,                                          
00162                                           uint16_t len)
00163 {
00164 
00165   USBD_LL_PrepareReceive (pdev,
00166                           0,                     
00167                           pbuf,                         
00168                           len);
00169   return USBD_OK;
00170 }
00171 /**
00172 * @brief  USBD_CtlSendStatus
00173 *         send zero lzngth packet on the ctl pipe
00174 * @param  pdev: device instance
00175 * @retval status
00176 */
00177 USBD_StatusTypeDef  USBD_CtlSendStatus (USBD_HandleTypeDef  *pdev)
00178 {
00179 
00180   /* Set EP0 State */
00181   pdev->ep0_state = USBD_EP0_STATUS_IN;
00182   
00183  /* Start the transfer */
00184   USBD_LL_Transmit (pdev, 0x00, NULL, 0);   
00185   
00186   return USBD_OK;
00187 }
00188 
00189 /**
00190 * @brief  USBD_CtlReceiveStatus
00191 *         receive zero lzngth packet on the ctl pipe
00192 * @param  pdev: device instance
00193 * @retval status
00194 */
00195 USBD_StatusTypeDef  USBD_CtlReceiveStatus (USBD_HandleTypeDef  *pdev)
00196 {
00197   /* Set EP0 State */
00198   pdev->ep0_state = USBD_EP0_STATUS_OUT; 
00199   
00200  /* Start the transfer */  
00201   USBD_LL_PrepareReceive ( pdev,
00202                     0,
00203                     NULL,
00204                     0);  
00205 
00206   return USBD_OK;
00207 }
00208 
00209 
00210 /**
00211 * @brief  USBD_GetRxCount
00212 *         returns the received data length
00213 * @param  pdev: device instance
00214 * @param  ep_addr: endpoint address
00215 * @retval Rx Data blength
00216 */
00217 uint16_t  USBD_GetRxCount (USBD_HandleTypeDef  *pdev , uint8_t ep_addr)
00218 {
00219   return USBD_LL_GetRxDataSize(pdev, ep_addr);
00220 }
00221 
00222 /**
00223   * @}
00224   */ 
00225 
00226 
00227 /**
00228   * @}
00229   */ 
00230 
00231 
00232 /**
00233   * @}
00234   */ 
00235 
00236 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
00237