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https://github.com/STMicroelectronics/stm32-mw-usb-device.git
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Release v2.6.0
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slimih
247
Class/CDC_ECM/Src/usbd_cdc_ecm_if_template.c
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247
Class/CDC_ECM/Src/usbd_cdc_ecm_if_template.c
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/**
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******************************************************************************
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* @file Src/usbd_cdc_ecm_if_template.c
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* @author MCD Application Team
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* @brief Source file for USBD CDC_ECM interface
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2019 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under Ultimate Liberty license
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* SLA0044, the "License"; You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* www.st.com/SLA0044
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/*
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Include here LwIP files if used
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN static uint8_t UserRxBuffer[CDC_ECM_ETH_MAX_SEGSZE + 100]__ALIGN_END; /* Received Data over USB are stored in this buffer */
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN static uint8_t UserTxBuffer[CDC_ECM_ETH_MAX_SEGSZE + 100]__ALIGN_END; /* Received Data over CDC_ECM (CDC_ECM interface) are stored in this buffer */
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static uint8_t CDC_ECMInitialized = 0U;
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/* USB handler declaration */
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extern USBD_HandleTypeDef USBD_Device;
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/* Private function prototypes -----------------------------------------------*/
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static int8_t CDC_ECM_Itf_Init(void);
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static int8_t CDC_ECM_Itf_DeInit(void);
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static int8_t CDC_ECM_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length);
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static int8_t CDC_ECM_Itf_Receive(uint8_t *pbuf, uint32_t *Len);
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static int8_t CDC_ECM_Itf_TransmitCplt(uint8_t *pbuf, uint32_t *Len, uint8_t epnum);
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static int8_t CDC_ECM_Itf_Process(USBD_HandleTypeDef *pdev);
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USBD_CDC_ECM_ItfTypeDef USBD_CDC_ECM_fops =
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{
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CDC_ECM_Itf_Init,
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CDC_ECM_Itf_DeInit,
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CDC_ECM_Itf_Control,
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CDC_ECM_Itf_Receive,
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CDC_ECM_Itf_TransmitCplt,
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CDC_ECM_Itf_Process,
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(uint8_t *)CDC_ECM_MAC_STR_DESC,
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};
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief CDC_ECM_Itf_Init
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* Initializes the CDC_ECM media low layer
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* @param None
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_Init(void)
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{
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if (CDC_ECMInitialized == 0U)
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{
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/*
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Initialize the TCP/IP stack here
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*/
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CDC_ECMInitialized = 1U;
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}
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/* Set Application Buffers */
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(void)USBD_CDC_ECM_SetTxBuffer(&USBD_Device, UserTxBuffer, 0U);
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(void)USBD_CDC_ECM_SetRxBuffer(&USBD_Device, UserRxBuffer);
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return (0);
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}
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/**
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* @brief CDC_ECM_Itf_DeInit
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* DeInitializes the CDC_ECM media low layer
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* @param None
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_DeInit(void)
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{
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USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
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/* Notify application layer that link is down */
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hcdc_cdc_ecm->LinkStatus = 0U;
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return (0);
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}
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/**
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* @brief CDC_ECM_Itf_Control
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* Manage the CDC_ECM class requests
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* @param Cmd: Command code
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* @param Buf: Buffer containing command data (request parameters)
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* @param Len: Number of data to be sent (in bytes)
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length)
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{
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USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
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switch (cmd)
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{
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case CDC_ECM_SEND_ENCAPSULATED_COMMAND:
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/* Add your code here */
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break;
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case CDC_ECM_GET_ENCAPSULATED_RESPONSE:
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/* Add your code here */
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break;
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case CDC_ECM_SET_ETH_MULTICAST_FILTERS:
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/* Add your code here */
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break;
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case CDC_ECM_SET_ETH_PWRM_PATTERN_FILTER:
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/* Add your code here */
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break;
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case CDC_ECM_GET_ETH_PWRM_PATTERN_FILTER:
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/* Add your code here */
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break;
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case CDC_ECM_SET_ETH_PACKET_FILTER:
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/* Check if this is the first time we enter */
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if (hcdc_cdc_ecm->LinkStatus == 0U)
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{
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/*
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Setup the Link up at TCP/IP level
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*/
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hcdc_cdc_ecm->LinkStatus = 1U;
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/* Modification for MacOS which doesn't send SetInterface before receiving INs */
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if (hcdc_cdc_ecm->NotificationStatus == 0U)
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{
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/* Send notification: NETWORK_CONNECTION Event */
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(void)USBD_CDC_ECM_SendNotification(&USBD_Device, NETWORK_CONNECTION,
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CDC_ECM_NET_CONNECTED, NULL);
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/* Prepare for sending Connection Speed Change notification */
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hcdc_cdc_ecm->NotificationStatus = 1U;
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}
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}
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/* Add your code here */
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break;
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case CDC_ECM_GET_ETH_STATISTIC:
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/* Add your code here */
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break;
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default:
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break;
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}
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UNUSED(length);
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UNUSED(pbuf);
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return (0);
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}
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/**
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* @brief CDC_ECM_Itf_Receive
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* Data received over USB OUT endpoint are sent over CDC_ECM interface
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* through this function.
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* @param Buf: Buffer of data to be transmitted
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* @param Len: Number of data received (in bytes)
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_Receive(uint8_t *Buf, uint32_t *Len)
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{
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/* Get the CDC_ECM handler pointer */
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USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(USBD_Device.pClassData);
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/* Call Eth buffer processing */
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hcdc_cdc_ecm->RxState = 1U;
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UNUSED(Len);
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UNUSED(Buf);
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return (0);
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}
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/**
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* @brief CDC_ECM_Itf_TransmitCplt
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* Data transmited callback
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*
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* @note
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* This function is IN transfer complete callback used to inform user that
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* the submitted Data is successfully sent over USB.
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*
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* @param Buf: Buffer of data to be received
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* @param Len: Number of data received (in bytes)
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_TransmitCplt(uint8_t *Buf, uint32_t *Len, uint8_t epnum)
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{
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UNUSED(Buf);
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UNUSED(Len);
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UNUSED(epnum);
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return (0);
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}
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/**
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* @brief CDC_ECM_Itf_Process
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* Data received over USB OUT endpoint are sent over CDC_ECM interface
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* through this function.
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* @param pdef: pointer to the USB Device Handle
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_ECM_Itf_Process(USBD_HandleTypeDef *pdev)
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{
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/* Get the CDC_ECM handler pointer */
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USBD_CDC_ECM_HandleTypeDef *hcdc_cdc_ecm = (USBD_CDC_ECM_HandleTypeDef *)(pdev->pClassData);
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if ((hcdc_cdc_ecm != NULL) && (hcdc_cdc_ecm->LinkStatus != 0U))
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{
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/*
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Read a received packet from the Ethernet buffers and send it
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to the lwIP for handling
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Call here the TCP/IP background tasks.
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*/
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}
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return (0);
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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