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611 lines
13 KiB
611 lines
13 KiB
/**
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******************************************************************************
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* @file usbd_core.c
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* @author MCD Application Team
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* @version V2.4.1
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* @date 19-June-2015
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* @brief This file provides all the USBD core functions.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "usbd_core.h"
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#include "usbd_descriptors.h"
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#include "upstream_statemachine.h"
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/** @addtogroup STM32_USBD_DEVICE_LIBRARY
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* @{
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*/
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/** @defgroup USBD_CORE
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* @brief usbd core module
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* @{
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*/
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/** @defgroup USBD_CORE_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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/** @defgroup USBD_CORE_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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/** @defgroup USBD_CORE_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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/** @defgroup USBD_CORE_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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/** @defgroup USBD_CORE_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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/** @defgroup USBD_CORE_Private_Functions
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* @{
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*/
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/**
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* @brief USBD_Init
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* Initializes the device stack and load the class driver
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* @param pdev: device instance
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* @param pdesc: Descriptor structure address
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* @param id: Low level core index
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* @retval None
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*/
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USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *pdesc, uint8_t id)
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{
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/* Check whether the USB Host handle is valid */
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if(pdev == NULL)
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{
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USBD_ErrLog("Invalid Device handle");
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return USBD_FAIL;
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}
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/* Unlink previous class*/
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pdev->pClass = NULL;
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pdev->pClassData = NULL;
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/* Assign USBD Descriptors */
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if(pdesc != NULL)
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{
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pdev->pDesc = pdesc;
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}
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/* Set Device initial State */
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pdev->dev_state = USBD_STATE_DEFAULT;
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pdev->id = id;
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/* Initialize low level driver */
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USBD_LL_Init(pdev);
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pdev->usbCoreStatus = USB_STATUS_STOP;
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return USBD_OK;
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}
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/**
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* @brief USBD_DeInit
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* Re-Initialize th device library
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* @param pdev: device instance
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* @retval status: status
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*/
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USBD_ClassTypeDef* USBD_DeInit(USBD_HandleTypeDef *pdev)
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{
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/* Set Default State */
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pdev->dev_state = USBD_STATE_DEFAULT;
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/* Free Class Resources */
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pdev->pClass->DeInit(pdev, pdev->dev_config);
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/* Stop the low level driver */
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// USBD_LL_Stop(pdev);
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/* Deinitialize low level driver */
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USBD_LL_DeInit(pdev);
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return pdev->pClass;
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// return USBD_OK;
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}
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/**
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* @brief USBD_RegisterClass
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* Link class driver to Device Core.
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* @param pDevice : Device Handle
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* @param pclass: Class handle
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* @retval USBD Status
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*/
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USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass)
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{
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USBD_StatusTypeDef status = USBD_OK;
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if(pclass != 0)
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{
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/* link the class to the USB Device handle */
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pdev->pClass = pclass;
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USBD_FS_DeviceDesc[USBD_PID_LOBYTE_OFFSET] = LOBYTE(pclass->USBDevPid);
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USBD_FS_DeviceDesc[USBD_PID_HIBYTE_OFFSET] = HIBYTE(pclass->USBDevPid);
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status = USBD_OK;
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}
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else
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{
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USBD_ErrLog("Invalid Class handle");
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status = USBD_FAIL;
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}
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return status;
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}
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/**
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* @brief USBD_Start
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* Start the USB Device Core.
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* @param pdev: Device Handle
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* @retval USBD Status
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*/
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USBD_StatusTypeDef USBD_Start (USBD_HandleTypeDef *pdev)
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{
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/* Start the low level driver */
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USBD_LL_Start(pdev);
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pdev->usbCoreStatus = USB_STATUS_START;
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return USBD_OK;
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}
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/**
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* @brief USBD_Stop
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* Stop the USB Device Core.
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* @param pdev: Device Handle
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* @retval USBD Status
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*/
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USBD_StatusTypeDef USBD_Stop (USBD_HandleTypeDef *pdev)
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{
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/* Free Class Resources */
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pdev->pClass->DeInit(pdev, pdev->dev_config);
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/* Stop the low level driver */
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USBD_LL_Stop(pdev);
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pdev->usbCoreStatus = USB_STATUS_STOP;
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return USBD_OK;
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}
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USBD_StatusTypeDef USBD_RequestStop(USBD_HandleTypeDef *pdev)
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{
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if (pdev->usbCoreStatus == USB_STATUS_START)
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{
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pdev->usbCoreStatus = USB_STATUS_REQUEST_EJECT;
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pdev->usbRequestEjectTime = HAL_GetTick() + 5; //Allow > 1ms to transmit the SCSI eject reply before disconnecting
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_RunTestMode
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* Launch test mode process
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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_RunTestMode (USBD_HandleTypeDef *pdev)
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{
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UNUSED(pdev);
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return USBD_OK;
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}
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/**
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* @brief USBD_SetClassConfig
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* Configure device and start the interface
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* @param pdev: device instance
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* @param cfgidx: configuration index
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* @retval status
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*/
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USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
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{
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USBD_StatusTypeDef ret = USBD_FAIL;
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if(pdev->pClass != NULL)
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{
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/* Set configuration and Start the Class*/
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if(pdev->pClass->Init(pdev, cfgidx) == 0)
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{
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ret = USBD_OK;
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}
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}
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return ret;
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}
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/**
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* @brief USBD_ClrClassConfig
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* Clear current configuration
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* @param pdev: device instance
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* @param cfgidx: configuration index
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* @retval status: USBD_StatusTypeDef
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*/
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USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
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{
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/* Clear configuration and De-initialize the Class process*/
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pdev->pClass->DeInit(pdev, cfgidx);
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return USBD_OK;
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}
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/**
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* @brief USBD_SetupStage
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* Handle the setup stage
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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_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup)
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{
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USBD_ParseSetupRequest(&pdev->request, psetup);
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pdev->ep0_state = USBD_EP0_SETUP;
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pdev->ep0_data_len = pdev->request.wLength;
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switch (pdev->request.bmRequest & 0x1F)
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{
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case USB_REQ_RECIPIENT_DEVICE:
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USBD_StdDevReq (pdev, &pdev->request);
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break;
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case USB_REQ_RECIPIENT_INTERFACE:
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USBD_StdItfReq(pdev, &pdev->request);
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break;
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case USB_REQ_RECIPIENT_ENDPOINT:
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USBD_StdEPReq(pdev, &pdev->request);
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break;
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default:
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USBD_LL_StallEP(pdev , pdev->request.bmRequest & 0x80);
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break;
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_DataOutStage
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* Handle data OUT stage
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* @param pdev: device instance
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* @param epnum: endpoint index
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* @retval status
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*/
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USBD_StatusTypeDef USBD_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata)
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{
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USBD_EndpointTypeDef *pep;
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if(epnum == 0)
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{
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pep = &pdev->ep_out[0];
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if ( pdev->ep0_state == USBD_EP0_DATA_OUT)
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{
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if(pep->rem_length > pep->maxpacket)
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{
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pep->rem_length -= pep->maxpacket;
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USBD_CtlContinueRx (pdev,
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pdata,
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pep->rem_length);
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}
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else
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{
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if((pdev->pClass->EP0_RxReady != NULL)&&
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(pdev->dev_state == USBD_STATE_CONFIGURED))
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{
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pdev->pClass->EP0_RxReady(pdev);
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}
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USBD_CtlSendStatus(pdev);
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}
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}
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}
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else if((pdev->pClass->DataOut != NULL)&&
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(pdev->dev_state == USBD_STATE_CONFIGURED))
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{
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pdev->pClass->DataOut(pdev, epnum);
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_DataInStage
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* Handle data in stage
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* @param pdev: device instance
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* @param epnum: endpoint index
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* @retval status
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*/
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USBD_StatusTypeDef USBD_DataInStage(USBD_HandleTypeDef *pdev ,uint8_t epnum, uint8_t *pdata)
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{
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USBD_EndpointTypeDef *pep;
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if(epnum == 0)
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{
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pep = &pdev->ep_in[0];
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if ( pdev->ep0_state == USBD_EP0_DATA_IN)
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{
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if(pep->rem_length > pep->maxpacket)
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{
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pep->rem_length -= pep->maxpacket;
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USBD_CtlContinueSendData (pdev,
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pdata,
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pep->rem_length);
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}
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else
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{
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//We sent less data than host was expecting?
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/* last packet is MPS multiple, so send ZLP packet */
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if((pep->total_length % pep->maxpacket == 0) &&
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(pep->total_length >= pep->maxpacket) &&
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(pep->total_length < pdev->ep0_data_len ))
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{
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USBD_CtlContinueSendData(pdev , NULL, 0);
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pdev->ep0_data_len = 0;
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}
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else
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{
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if((pdev->pClass->EP0_TxSent != NULL)&&
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(pdev->dev_state == USBD_STATE_CONFIGURED))
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{
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pdev->pClass->EP0_TxSent(pdev);
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}
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USBD_CtlReceiveStatus(pdev);
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}
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}
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}
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if (pdev->dev_test_mode == 1)
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{
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USBD_RunTestMode(pdev);
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pdev->dev_test_mode = 0;
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}
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}
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else if((pdev->pClass->DataIn != NULL)&&
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(pdev->dev_state == USBD_STATE_CONFIGURED))
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{
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pdev->pClass->DataIn(pdev, epnum);
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_Reset
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* Handle Reset event
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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_Reset(USBD_HandleTypeDef *pdev)
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{
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/* Open EP0 OUT */
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USBD_LL_OpenEP(pdev,
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0x00,
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USBD_EP_TYPE_CTRL,
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USB_MAX_EP0_SIZE);
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pdev->ep_out[0].maxpacket = USB_MAX_EP0_SIZE;
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/* Open EP0 IN */
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USBD_LL_OpenEP(pdev,
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0x80,
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USBD_EP_TYPE_CTRL,
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USB_MAX_EP0_SIZE);
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pdev->ep_in[0].maxpacket = USB_MAX_EP0_SIZE;
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/* Upon Reset call user call back */
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pdev->dev_state = USBD_STATE_DEFAULT;
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if (pdev->pClassData)
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pdev->pClass->DeInit(pdev, pdev->dev_config);
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return USBD_OK;
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}
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/**
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* @brief USBD_SetSpeed
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* Handle Reset event
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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_SetSpeed(USBD_HandleTypeDef *pdev, USBD_SpeedTypeDef speed)
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{
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pdev->dev_speed = speed;
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return USBD_OK;
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}
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/**
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* @brief USBD_Suspend
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* Handle Suspend event
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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_Suspend(USBD_HandleTypeDef *pdev)
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{
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if ((pdev->dev_state > USBD_STATE_DEFAULT) &&
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(pdev->dev_state < USBD_STATE_SUSPENDED))
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{
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pdev->dev_old_state = pdev->dev_state;
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pdev->dev_state = USBD_STATE_SUSPENDED;
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Upstream_StateMachine_Suspend();
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_Resume
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* Handle Resume event
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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_Resume(USBD_HandleTypeDef *pdev)
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{
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pdev->dev_state = pdev->dev_old_state;
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if (pdev->dev_old_state > USBD_STATE_DEFAULT)
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{
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Upstream_StateMachine_CheckResume();
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_SOF
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* Handle SOF event
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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_SOF(USBD_HandleTypeDef *pdev)
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{
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if(pdev->dev_state == USBD_STATE_CONFIGURED)
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{
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if(pdev->pClass->SOF != NULL)
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{
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pdev->pClass->SOF(pdev);
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}
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}
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if (pdev->usbCoreStatus == USB_STATUS_REQUEST_EJECT)
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{
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if ((int32_t)(HAL_GetTick() - pdev->usbRequestEjectTime) >= 0)
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{
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USBD_Stop(pdev);
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}
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}
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return USBD_OK;
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}
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/**
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* @brief USBD_IsoINIncomplete
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* Handle iso in incomplete event
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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_IsoINIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
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{
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UNUSED(pdev);
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return USBD_OK;
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}
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/**
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* @brief USBD_IsoOUTIncomplete
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* Handle iso out incomplete event
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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_IsoOUTIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
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{
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UNUSED(pdev);
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return USBD_OK;
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}
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/**
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* @brief USBD_DevConnected
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* Handle device connection event
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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_DevConnected(USBD_HandleTypeDef *pdev)
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{
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UNUSED(pdev);
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return USBD_OK;
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}
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/**
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* @brief USBD_DevDisconnected
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* Handle device disconnection event
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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_DevDisconnected(USBD_HandleTypeDef *pdev)
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{
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/* Free Class Resources */
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pdev->dev_state = USBD_STATE_DEFAULT;
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pdev->pClass->DeInit(pdev, pdev->dev_config);
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return USBD_OK;
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}
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USBD_StatusTypeDef USBD_BufferFreed(USBD_HandleTypeDef *pdev)
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{
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if(pdev->pClass->FreeDataBuffer != NULL)
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{
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pdev->pClass->FreeDataBuffer(pdev);
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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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*/
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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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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