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+/** |
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+ ****************************************************************************** |
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+ * @file usbd_ioreq.c |
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+ * @author MCD Application Team |
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+ * @brief This file provides the IO requests APIs for control endpoints. |
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+ ****************************************************************************** |
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+ * @attention |
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+ * |
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+ * Copyright (c) 2015 STMicroelectronics. |
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+ * All rights reserved. |
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+ * |
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+ * This software is licensed under terms that can be found in the LICENSE file |
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+ * in the root directory of this software component. |
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+ * If no LICENSE file comes with this software, it is provided AS-IS. |
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+ * |
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+ ****************************************************************************** |
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+ */ |
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+ |
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+/* Includes ------------------------------------------------------------------*/ |
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+#include "usbd_ioreq.h" |
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+ |
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+/** @addtogroup STM32_USB_DEVICE_LIBRARY |
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+ * @{
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ |
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+ * @brief control I/O requests module |
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+ * @{
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+ */ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_TypesDefinitions |
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+ * @{
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+ */ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_Defines |
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+ * @{
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+ */ |
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+ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_Macros |
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+ * @{
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+ */ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_Variables |
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+ * @{
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+ */ |
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+ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_FunctionPrototypes |
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+ * @{
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+ */ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** @defgroup USBD_IOREQ_Private_Functions |
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+ * @{
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+ */ |
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+ |
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+/** |
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+ * @brief USBD_CtlSendData |
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+ * send data on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @param buff: pointer to data buffer |
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+ * @param len: length of data to be sent |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlSendData(USBD_HandleTypeDef *pdev, |
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+ uint8_t *pbuf, uint32_t len) |
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+{
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+ /* Set EP0 State */ |
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+ pdev->ep0_state = USBD_EP0_DATA_IN; |
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+ pdev->ep_in[0].total_length = len; |
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+ |
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+#ifdef USBD_AVOID_PACKET_SPLIT_MPS |
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+ pdev->ep_in[0].rem_length = 0U; |
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+#else |
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+ pdev->ep_in[0].rem_length = len; |
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+#endif /* USBD_AVOID_PACKET_SPLIT_MPS */ |
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+ |
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+ /* Start the transfer */ |
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+ (void)USBD_LL_Transmit(pdev, 0x00U, pbuf, len); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_CtlContinueSendData |
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+ * continue sending data on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @param buff: pointer to data buffer |
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+ * @param len: length of data to be sent |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlContinueSendData(USBD_HandleTypeDef *pdev, |
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+ uint8_t *pbuf, uint32_t len) |
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+{
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+ /* Start the next transfer */ |
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+ (void)USBD_LL_Transmit(pdev, 0x00U, pbuf, len); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_CtlPrepareRx |
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+ * receive data on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @param buff: pointer to data buffer |
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+ * @param len: length of data to be received |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlPrepareRx(USBD_HandleTypeDef *pdev, |
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+ uint8_t *pbuf, uint32_t len) |
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+{
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+ /* Set EP0 State */ |
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+ pdev->ep0_state = USBD_EP0_DATA_OUT; |
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+ pdev->ep_out[0].total_length = len; |
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+ |
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+#ifdef USBD_AVOID_PACKET_SPLIT_MPS |
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+ pdev->ep_out[0].rem_length = 0U; |
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+#else |
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+ pdev->ep_out[0].rem_length = len; |
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+#endif /* USBD_AVOID_PACKET_SPLIT_MPS */ |
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+ |
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+ /* Start the transfer */ |
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+ (void)USBD_LL_PrepareReceive(pdev, 0U, pbuf, len); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_CtlContinueRx |
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+ * continue receive data on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @param buff: pointer to data buffer |
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+ * @param len: length of data to be received |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlContinueRx(USBD_HandleTypeDef *pdev, |
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+ uint8_t *pbuf, uint32_t len) |
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+{
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+ (void)USBD_LL_PrepareReceive(pdev, 0U, pbuf, len); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_CtlSendStatus |
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+ * send zero lzngth packet on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlSendStatus(USBD_HandleTypeDef *pdev) |
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+{
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+ /* Set EP0 State */ |
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+ pdev->ep0_state = USBD_EP0_STATUS_IN; |
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+ |
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+ /* Start the transfer */ |
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+ (void)USBD_LL_Transmit(pdev, 0x00U, NULL, 0U); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_CtlReceiveStatus |
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+ * receive zero lzngth packet on the ctl pipe |
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+ * @param pdev: device instance |
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+ * @retval status |
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+ */ |
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+USBD_StatusTypeDef USBD_CtlReceiveStatus(USBD_HandleTypeDef *pdev) |
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+{
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+ /* Set EP0 State */ |
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+ pdev->ep0_state = USBD_EP0_STATUS_OUT; |
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+ |
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+ /* Start the transfer */ |
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+ (void)USBD_LL_PrepareReceive(pdev, 0U, NULL, 0U); |
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+ |
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+ return USBD_OK; |
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+} |
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+ |
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+/** |
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+ * @brief USBD_GetRxCount |
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+ * returns the received data length |
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+ * @param pdev: device instance |
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+ * @param ep_addr: endpoint address |
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+ * @retval Rx Data blength |
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+ */ |
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+uint32_t USBD_GetRxCount(USBD_HandleTypeDef *pdev, uint8_t ep_addr) |
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+{
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+ return USBD_LL_GetRxDataSize(pdev, ep_addr); |
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+} |
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+ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** |
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+ * @} |
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+ */ |
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+ |
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+ |
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+/** |
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+ * @} |
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+ */ |
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+ |