mirror of
https://github.com/trezor/trezor-firmware.git
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237 lines
5.2 KiB
C
237 lines
5.2 KiB
C
/**
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******************************************************************************
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* @file usbd_ioreq.c
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* @author MCD Application Team
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* @version V2.4.2
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* @date 11-December-2015
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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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* <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_ioreq.h"
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/** @addtogroup STM32_USB_DEVICE_LIBRARY
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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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/** @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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/** @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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/** @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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/** @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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/** @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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/** @defgroup USBD_IOREQ_Private_Functions
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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,
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uint16_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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pdev->ep_in[0].rem_length = len;
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/* Start the transfer */
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USBD_LL_Transmit (pdev, 0x00, pbuf, len);
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return USBD_OK;
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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,
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uint16_t len)
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{
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/* Start the next transfer */
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USBD_LL_Transmit (pdev, 0x00, pbuf, len);
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return USBD_OK;
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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,
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uint16_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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pdev->ep_out[0].rem_length = len;
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/* Start the transfer */
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USBD_LL_PrepareReceive (pdev,
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0,
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pbuf,
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len);
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return USBD_OK;
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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,
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uint16_t len)
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{
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USBD_LL_PrepareReceive (pdev,
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0,
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pbuf,
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len);
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return USBD_OK;
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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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/* Start the transfer */
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USBD_LL_Transmit (pdev, 0x00, NULL, 0);
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return USBD_OK;
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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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/* Start the transfer */
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USBD_LL_PrepareReceive ( pdev,
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0,
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NULL,
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0);
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return USBD_OK;
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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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uint16_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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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