STM32_USB_Host_Library
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Outline
Includes
#include "usbh_pipes.h"
USBH_OpenPipe(USBH_HandleTypeDef *, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint16_t)
USBH_ClosePipe(USBH_HandleTypeDef *, uint8_t)
USBH_AllocPipe(USBH_HandleTypeDef *, uint8_t)
USBH_FreePipe(USBH_HandleTypeDef *, uint8_t)
USBH_GetFreePipe(USBH_HandleTypeDef *)
Files
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SourceVuSTM32 Libraries and SamplesSTM32_USB_Host_LibraryCore/Src/usbh_pipes.c
 
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/** ****************************************************************************** * @file usbh_pipes.c * @author MCD Application Team * @brief This file implements functions for opening and closing Pipes ****************************************************************************** * @attention * * Copyright (c) 2015 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "usbh_pipes.h" /** @addtogroup USBH_LIB * @{ *//* ... */ /** @addtogroup USBH_LIB_CORE * @{ *//* ... */ /** @defgroup USBH_PIPES * @brief This file includes opening and closing Pipes * @{ *//* ... */ /** @defgroup USBH_PIPES_Private_Defines * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_PIPES_Private_TypesDefinitions * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_PIPES_Private_Macros * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_PIPES_Private_Variables * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBH_PIPES_Private_Functions * @{ *//* ... */ static uint16_t USBH_GetFreePipe(USBH_HandleTypeDef *phost); /** * @brief USBH_Open_Pipe * Open a pipe * @param phost: Host Handle * @param pipe_num: Pipe Number * @param dev_address: USB Device address allocated to attached device * @param speed : USB device speed (Full/Low) * @param ep_type: end point type (Bulk/int/ctl) * @param mps: max pkt size * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_OpenPipe(USBH_HandleTypeDef *phost, uint8_t pipe_num, uint8_t epnum, uint8_t dev_address, uint8_t speed, uint8_t ep_type, uint16_t mps) { (void)USBH_LL_OpenPipe(phost, pipe_num, epnum, dev_address, speed, ep_type, mps); return USBH_OK; }{ ... } /** * @brief USBH_ClosePipe * Close a pipe * @param phost: Host Handle * @param pipe_num: Pipe Number * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_ClosePipe(USBH_HandleTypeDef *phost, uint8_t pipe_num) { (void)USBH_LL_ClosePipe(phost, pipe_num); return USBH_OK; }{ ... } /** * @brief USBH_Alloc_Pipe * Allocate a new Pipe * @param phost: Host Handle * @param ep_addr: End point for which the Pipe to be allocated * @retval Pipe number *//* ... */ uint8_t USBH_AllocPipe(USBH_HandleTypeDef *phost, uint8_t ep_addr) { uint16_t pipe; pipe = USBH_GetFreePipe(phost); if (pipe != 0xFFFFU) { phost->Pipes[pipe & 0xFU] = (uint32_t)(0x8000U | ep_addr); }if (pipe != 0xFFFFU) { ... } return (uint8_t)pipe; }{ ... } /** * @brief USBH_Free_Pipe * Free the USB Pipe * @param phost: Host Handle * @param idx: Pipe number to be freed * @retval USBH Status *//* ... */ USBH_StatusTypeDef USBH_FreePipe(USBH_HandleTypeDef *phost, uint8_t idx) { if (idx < USBH_MAX_PIPES_NBR) { phost->Pipes[idx] &= 0x7FFFU; }if (idx < USBH_MAX_PIPES_NBR) { ... } return USBH_OK; }{ ... } /** * @brief USBH_GetFreePipe * @param phost: Host Handle * Get a free Pipe number for allocation to a device endpoint * @retval idx: Free Pipe number *//* ... */ static uint16_t USBH_GetFreePipe(USBH_HandleTypeDef *phost) { uint8_t idx = 0U; for (idx = 0U; idx < USBH_MAX_PIPES_NBR; idx++) { if ((phost->Pipes[idx] & 0x8000U) == 0U) { return (uint16_t)idx; }if ((phost->Pipes[idx] & 0x8000U) == 0U) { ... } }for (idx = 0U; idx < USBH_MAX_PIPES_NBR; idx++) { ... } return 0xFFFFU; }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ Includes
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